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  1. Employees

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Nicholas Worth

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Nicholas Worth

Professor, Head of the Thermofluids Research Group
Department of Energy and Process Engineering

nicholas.a.worth@ntnu.no
+4773593552 Strømningsteknisk, 308, Gløshaugen, Kolbjørn Hejes vei 2
Google Scholar
About Publications Teaching Outreach

About

My research is aimed at increasing our fundamental understanding of different fluid flows in order to better predict and control them. Currently I have a focus on thermoacoustic instabilities in gas turbine combustors, the small-scale structure of high Reynolds number turbulence, and the development of new experimental methods.

 

Publications

  • Chronological
  • By category
  • See all publications in Cristin

2025

  • Verma, Abhijat; Worth, Nicholas Alexander. (2025) Flame transfer function measurements in an annular combustor: Comparison with single flame response under hydrogen enrichment. Combustion and Flame
    Academic article
  • Jankee, Girish Kumarsing; Yadala Venkata, Srikar; Æsøy, Eirik; Dawson, James Richard; Worth, Nicholas Alexander. (2025) Scaling and dynamics of vortex lock-in for circular cylinders in an oscillating flow. Journal of Fluid Mechanics
    Academic article

2024

  • Ånestad, Aksel; Æsøy, Eirik; Dawson, James; Worth, Nicholas Alexander. (2024) Mitigating Thermoacoustic Instabilities in Premixed Hydrogen Flames using Axial Staging. Proceedings of the Combustion Institute
    Academic article
  • Ahn, Byeonguk; Nygård, Håkon Tormodsen; Worth, Nicholas Alexander; Yang, Zhijian; Li, Larry. (2024) Longitudinal and azimuthal thermoacoustic modes in a pressurized annular combustor with bluff-body-stabilized methane-hydrogen flames. Physical Review Fluids
    Academic article
  • Hillestad, Johannes Næsset; Yadala Venkata, Srikar; Neunaber, Ingrid Johanne; Li, Leon; Hearst, Robert Jason; Worth, Nicholas Alexander. (2024) Volumetric visualization of vanishing vortices in wind turbine wakes. Physical Review Fluids
    Academic article
  • Su, Tong; Xu, Boyan; Bastiaans, Rob; Worth, Nicholas Alexander. (2024) Lean Blow-Off Behaviour of Premixed Bluff-Body Stabilized Hydrocarbon-Air Flames and Ammonia/Hydrogen/Nitrogen-Air Flames. The American Society of Mechanical Engineers (ASME)
    Academic chapter/article/Conference paper
  • Su, Tong; Xu, Boyan; Bastiaans, Rob; Worth, Nicholas Alexander. (2024) Lean Blow-Off Behaviour of Premixed Bluff-Body Stabilized Hydrocarbon-Air Flames and Ammonia/Hydrogen/Nitrogen-Air Flames. Journal of Engineering For Gas Turbines and Power
    Academic article
  • Su, Tong; Xu, Boyan; Bastiaans, Rob; Worth, Nicholas Alexander. (2024) The behaviour of NH<inf>3</inf>/H<inf>2</inf>/N<inf>2</inf>, CH<inf>4</inf> and C<inf>3</inf>H<inf>8</inf> turbulent premixed bluff-body stabilized flames near lean blow-off. Proceedings of the Combustion Institute
    Academic article

2023

  • Ånestad, Aksel; Sampath, Ramgopal; Moeck, Jonas; Gruber, Andrea; Worth, Nicholas Alexander. (2023) The Structure and Stability of Premixed CH<inf>4</inf>, H<inf>2</inf>, and NH<inf>3</inf>/H<inf>2</inf> Flames in an Axially Staged Can Combustor. Journal of Engineering For Gas Turbines and Power
    Academic article
  • Nygård, Håkon Tormodsen; Ghirardo, Giulio; Worth, Nicholas Alexander. (2023) Saturation of flames to multiple inputs at one frequency. Journal of Fluid Mechanics
    Academic article
  • Ånestad, Aksel; Sampath, Ramgopal; Moeck, Jonas; Gruber, Andrea; Worth, Nicholas Alexander. (2023) THE STRUCTURE AND STABILITY OF PREMIXED CH4, H2, AND NH3/H2 FLAMES IN AN AXIALLY STAGED CAN COMBUSTOR. The American Society of Mechanical Engineers (ASME)
    Academic chapter/article/Conference paper
  • Govender, Dirren; Liu, Hecong; Peng, Fan; Cai, Weiwei; Worth, Nicholas Alexander. (2023) Tomographic reconstruction of an azimuthally forced flame in an annular chamber. Proceedings of the Combustion Institute
    Academic article
  • Vinnes, Magnus Kyrkjebø; Worth, Nicholas Alexander; Segalini, Antonio; Hearst, Robert Jason. (2023) The flow in the induction and entrance regions of lab-scale wind farms. Wind Energy
    Academic article
  • Chen, Zhi X.; Swaminathan, Nedunchezhian; Mazur, Marek; Worth, Nicholas Alexander; Zhang, Guangyu; Li, Lei. (2023) Numerical investigation of azimuthal thermoacoustic instability in a gas turbine model combustor. Fuel
    Academic article

2022

  • Buschmann, Philip Erik; Worth, Nicholas; Moeck, Jonas. (2022) Thermoacoustic oscillations in a can-annular model combustor with asymmetries in the can-to-can coupling. Proceedings of the Combustion Institute
    Academic article
  • Æsøy, Eirik; Jankee, Girish Kumarsing; Yadala, Srikar; Worth, Nicholas; Dawson, James. (2022) Suppression of self-excited thermoacoustic instabilities by convective-acoustic interference. Proceedings of the Combustion Institute
    Academic article
  • Ahn, Byeonguk; Indlekofer, Thomas; Dawson, James; Worth, Nicholas. (2022) Heat release rate response of azimuthal thermoacoustic instabilities in a pressurized annular combustor with methane/hydrogen flames. Combustion and Flame
    Academic article
  • Kushwaha, Abhijit; Worth, Nicholas; Dawson, James; Gupta, Vikrant; Li, Larry. (2022) Asynchronous and synchronous quenching of a globally unstable jet via axisymmetry breaking. Journal of Fluid Mechanics
    Academic article
  • Ånestad, Aksel; Ahn, Byeonguk; Nygård, Håkon Tormodsen; Worth, Nicholas. (2022) The Effect of Rectangular Confinement Aspect Ratio On the Flame Transfer Function of a Turbulent Swirling Flame. Journal of Engineering For Gas Turbines and Power
    Academic article
  • Govender, Dirren; Wiseman, Samuel; Dawson, James; Worth, Nicholas. (2022) Large volume scanning laser induced fluorescence measurement of a bluff-body stabilised flame in an annular combustor. Experiments in Fluids
    Academic article
  • Peng, Fan; Liu, Hecong; Zhao, Qin; Worth, Nicholas; Cai, Weiwei. (2022) Assessment of imaging models for volumetric tomography of fluid flows. Measurement
    Academic article

2021

  • Indlekofer, Thomas; Ahn, Byeonguk; Kwah, Yi Hao; Wiseman, Samuel; Mazur, Marek; Dawson, James. (2021) The effect of hydrogen addition on the amplitude and harmonic response of azimuthal instabilities in a pressurized annular combustor. Combustion and Flame
    Academic article
  • Nygård, Håkon Tormodsen; Ghirardo, Giulio; Worth, Nicholas. (2021) Azimuthal flame response and symmetry breaking in a forced annular combustor. Combustion and Flame
    Academic article
  • Æsøy, Eirik; Aguilar, Jose; Bothien, Mirko R.; Worth, Nicholas; Dawson, James. (2021) Acoustic-Convective Interference in Transfer Functions of Methane/Hydrogen and Pure Hydrogen Flames. Journal of Engineering For Gas Turbines and Power
    Academic article
  • Ahn, Byeonguk; Indlekofer, Thomas; Dawson, James; Worth, Nicholas. (2021) Transient Thermo-Acoustic Responses of Methane/Hydrogen Flames in a Pressurized Annular Combustor. Journal of Engineering For Gas Turbines and Power
    Academic article
  • Nygård, Håkon Tormodsen; Worth, Nicholas. (2021) Flame transfer functions and dynamics of a closely confined premixed bluff body stabilized flame with swirl. Journal of Engineering For Gas Turbines and Power
    Academic article
  • Æsøy, Eirik; Nygård, Håkon Tormodsen; Worth, Nicholas; Dawson, James Richard. (2021) Tailoring the gain and phase of the flame transfer function through targeted convective-acoustic interference. Combustion and Flame
    Academic article
  • Æsøy, Eirik; Aguilar, Jose; Worth, Nicholas; Dawson, James. (2021) The response of an axisymmetric jet placed at various positions in a standing wave. Journal of Fluid Mechanics
    Academic article
  • Helvig, Sanne de Jong; Vinnes, Magnus Kyrkjebø; Segalini, Antonio; Worth, Nicholas; Hearst, R. Jason. (2021) A comparison of lab-scale free rotating wind turbines and actuator disks. Journal of Wind Engineering and Industrial Aerodynamics
    Academic article

2020

  • Worth, Nicholas; Mistry, Dhiren; Berk, Tim; Dawson, James. (2020) Vortex dynamics of a jet at the pressure node in a standing wave. Journal of Fluid Mechanics
    Academic article
  • Æsøy, Eirik; Aguilar, Jose; Wiseman, Samuel; Bothien, Mirko R.; Worth, Nicholas; Dawson, James. (2020) Scaling and prediction of transfer functions in lean premixed H2/CH4-flames. Combustion and Flame
    Academic article
  • Mazur, Marek; Kwah, Yi Hao; Indlekofer, Thomas; Dawson, James; Worth, Nicholas. (2020) Self-excited longitudinal and azimuthal modes in a pressurised annular combustor. Proceedings of the Combustion Institute
    Academic article
  • Ghirardo, Giulio; Nygård, Håkon Tormodsen; Cuquel, Alexis; Worth, Nicholas. (2020) Symmetry breaking modelling for azimuthal combustion dynamics. Proceedings of the Combustion Institute
    Academic article
  • Knutsen, Anna Nina; Baj, Pawel; Lawson, John M; Bodenschatz, Eberhard; Dawson, James; Worth, Nicholas. (2020) The inter-scale energy budget in a von Kármán mixing flow. Journal of Fluid Mechanics
    Academic article

2019

  • Mazur, Marek; Nygård, Håkon Tormodsen; Dawson, James; Worth, Nicholas. (2019) Characteristics of self-excited spinning azimuthal modes in an annular combustor with turbulent premixed bluff-body flames. Proceedings of the Combustion Institute
    Academic article
  • Zettervall, Niklas; Worth, Nicholas; Mazur, Marek; Dawson, James; Fureby, Christer. (2019) Large eddy simulation of CH4-air and C2H4-air combustion in a model annular gas turbine combustor. Proceedings of the Combustion Institute
    Academic article
  • Nygård, Håkon Tormodsen; Mazur, Marek; Dawson, James; Worth, Nicholas. (2019) Flame dynamics of azimuthal forced spinning and standing modes in an annular combustor. Proceedings of the Combustion Institute
    Academic article
  • Worth, Nicholas; Dawson, James. (2019) Characterisation of flame surface annihilation events in self excited interacting flames. Combustion and Flame
    Academic article
  • Lawson, John M; Bodenschatz, Eberhard; Knutsen, Anna Nina; Dawson, James; Worth, Nicholas. (2019) Direct assessment of Kolmogorov's first refined similarity hypothesis. Physical Review Fluids
    Academic article
  • Kozul, Melissa; Koothur, Vipin; Worth, Nicholas; Dawson, James. (2019) A scanning particle tracking velocimetry technique for high‑Reynolds number turbulent flows. Experiments in Fluids
    Academic article

2017

  • Worth, Nicholas; Dawson, J R. (2017) Effect of equivalence ratio on the modal dynamics of azimuthal combustion instabilities. Proceedings of the Combustion Institute
    Academic article
  • Worth, Nicholas; Dawson, J R; Sidey, Jenni Am; Mastorakos, Epaminondas. (2017) Azimuthally forced flames in an annular combustor. Proceedings of the Combustion Institute
    Academic article
  • Knutsen, Anna Nina; Lawson, John M; Dawson, J R; Worth, Nicholas. (2017) A laser sheet self-calibration method for scanning PIV. Experiments in Fluids
    Academic article

2016

  • Giusti, Andrea; Worth, Nicholas; Mastorakos, Epaminondas; Dowling, Ann. (2016) Experimental and Numerical Investigation into the Propagation of Entropy Waves. AIAA Journal
    Academic article

2015

  • Bauerheim, M.; Staffelbach, G.; Worth, Nicholas; Dawson, J R; Gicquel, L.Y.M.; Poinsot, T.. (2015) Sensitivity of LES-based harmonic flame response model for turbulent swirled flames and impact on the stability of azimuthal modes. Proceedings of the Combustion Institute
    Academic article
  • Dawson, J R; Worth, Nicholas. (2015) The effect of baffles on self-excited azimuthal modes in an annular combustor. Proceedings of the Combustion Institute
    Academic article

2014

  • Dawson, James; Worth, Nicholas. (2014) Flame dynamics and unsteady heat release rate of self-excited azimuthal modes in an annular combustor. Combustion and Flame
    Academic article

2013

  • Worth, Nicholas; Dawson, James. (2013) Tomographic reconstruction of OH* chemiluminescence in two interacting turbulent flames. Measurement Science and Technology
    Academic article
  • Worth, Nicholas; Dawson, James. (2013) Self-excited circumferential instabilities in a model annular gas turbine combustor: global flame dynamics. Symposium, International, on combustion
    Academic article
  • Worth, Nicholas; Dawson, James. (2013) Modal dynamics of self-excited azimuthal instabilities in an annular combustion chamber. Combustion and Flame
    Academic article

2012

  • Aydemir, E.; Worth, Nicholas; Dawson, James. (2012) The formation of vortex rings in a strongly forced round jet. Experiments in Fluids
    Academic article
  • Worth, Nicholas; Dawson, James. (2012) Cinematographic OH-PLIF measurements of two interacting turbulent premixed flames with and without acoustic forcing. Combustion and Flame
    Academic article

2011

  • Worth, Nicholas; Nickels, T. B.. (2011) Time-resolved volumetric measurement of fine-scale coherent structures in turbulence. Physical Review E. Statistical, Nonlinear, and Soft Matter Physics
    Academic article
  • Worth, Nicholas; Nickels, T. B.. (2011) Some characteristics of thin shear layers in homogeneous turbulent flow. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
    Academic article

2010

  • Worth, Nicholas; Nickels, Timothy; Swarminathan, Nedunchezian. (2010) A tomographic PIV resolution study based on homogeneous isotropic turbulence DNS data. Experiments in Fluids
    Academic article

2008

  • Worth, Nicholas; Nickels, Timothy. (2008) Acceleration of Tomo-PIV by estimating the initial volume intensity distribution. Experiments in Fluids
    Academic article

Journal publications

  • Verma, Abhijat; Worth, Nicholas Alexander. (2025) Flame transfer function measurements in an annular combustor: Comparison with single flame response under hydrogen enrichment. Combustion and Flame
    Academic article
  • Jankee, Girish Kumarsing; Yadala Venkata, Srikar; Æsøy, Eirik; Dawson, James Richard; Worth, Nicholas Alexander. (2025) Scaling and dynamics of vortex lock-in for circular cylinders in an oscillating flow. Journal of Fluid Mechanics
    Academic article
  • Ånestad, Aksel; Æsøy, Eirik; Dawson, James; Worth, Nicholas Alexander. (2024) Mitigating Thermoacoustic Instabilities in Premixed Hydrogen Flames using Axial Staging. Proceedings of the Combustion Institute
    Academic article
  • Ahn, Byeonguk; Nygård, Håkon Tormodsen; Worth, Nicholas Alexander; Yang, Zhijian; Li, Larry. (2024) Longitudinal and azimuthal thermoacoustic modes in a pressurized annular combustor with bluff-body-stabilized methane-hydrogen flames. Physical Review Fluids
    Academic article
  • Hillestad, Johannes Næsset; Yadala Venkata, Srikar; Neunaber, Ingrid Johanne; Li, Leon; Hearst, Robert Jason; Worth, Nicholas Alexander. (2024) Volumetric visualization of vanishing vortices in wind turbine wakes. Physical Review Fluids
    Academic article
  • Su, Tong; Xu, Boyan; Bastiaans, Rob; Worth, Nicholas Alexander. (2024) Lean Blow-Off Behaviour of Premixed Bluff-Body Stabilized Hydrocarbon-Air Flames and Ammonia/Hydrogen/Nitrogen-Air Flames. Journal of Engineering For Gas Turbines and Power
    Academic article
  • Su, Tong; Xu, Boyan; Bastiaans, Rob; Worth, Nicholas Alexander. (2024) The behaviour of NH<inf>3</inf>/H<inf>2</inf>/N<inf>2</inf>, CH<inf>4</inf> and C<inf>3</inf>H<inf>8</inf> turbulent premixed bluff-body stabilized flames near lean blow-off. Proceedings of the Combustion Institute
    Academic article
  • Ånestad, Aksel; Sampath, Ramgopal; Moeck, Jonas; Gruber, Andrea; Worth, Nicholas Alexander. (2023) The Structure and Stability of Premixed CH<inf>4</inf>, H<inf>2</inf>, and NH<inf>3</inf>/H<inf>2</inf> Flames in an Axially Staged Can Combustor. Journal of Engineering For Gas Turbines and Power
    Academic article
  • Nygård, Håkon Tormodsen; Ghirardo, Giulio; Worth, Nicholas Alexander. (2023) Saturation of flames to multiple inputs at one frequency. Journal of Fluid Mechanics
    Academic article
  • Govender, Dirren; Liu, Hecong; Peng, Fan; Cai, Weiwei; Worth, Nicholas Alexander. (2023) Tomographic reconstruction of an azimuthally forced flame in an annular chamber. Proceedings of the Combustion Institute
    Academic article
  • Vinnes, Magnus Kyrkjebø; Worth, Nicholas Alexander; Segalini, Antonio; Hearst, Robert Jason. (2023) The flow in the induction and entrance regions of lab-scale wind farms. Wind Energy
    Academic article
  • Chen, Zhi X.; Swaminathan, Nedunchezhian; Mazur, Marek; Worth, Nicholas Alexander; Zhang, Guangyu; Li, Lei. (2023) Numerical investigation of azimuthal thermoacoustic instability in a gas turbine model combustor. Fuel
    Academic article
  • Buschmann, Philip Erik; Worth, Nicholas; Moeck, Jonas. (2022) Thermoacoustic oscillations in a can-annular model combustor with asymmetries in the can-to-can coupling. Proceedings of the Combustion Institute
    Academic article
  • Æsøy, Eirik; Jankee, Girish Kumarsing; Yadala, Srikar; Worth, Nicholas; Dawson, James. (2022) Suppression of self-excited thermoacoustic instabilities by convective-acoustic interference. Proceedings of the Combustion Institute
    Academic article
  • Ahn, Byeonguk; Indlekofer, Thomas; Dawson, James; Worth, Nicholas. (2022) Heat release rate response of azimuthal thermoacoustic instabilities in a pressurized annular combustor with methane/hydrogen flames. Combustion and Flame
    Academic article
  • Kushwaha, Abhijit; Worth, Nicholas; Dawson, James; Gupta, Vikrant; Li, Larry. (2022) Asynchronous and synchronous quenching of a globally unstable jet via axisymmetry breaking. Journal of Fluid Mechanics
    Academic article
  • Ånestad, Aksel; Ahn, Byeonguk; Nygård, Håkon Tormodsen; Worth, Nicholas. (2022) The Effect of Rectangular Confinement Aspect Ratio On the Flame Transfer Function of a Turbulent Swirling Flame. Journal of Engineering For Gas Turbines and Power
    Academic article
  • Govender, Dirren; Wiseman, Samuel; Dawson, James; Worth, Nicholas. (2022) Large volume scanning laser induced fluorescence measurement of a bluff-body stabilised flame in an annular combustor. Experiments in Fluids
    Academic article
  • Peng, Fan; Liu, Hecong; Zhao, Qin; Worth, Nicholas; Cai, Weiwei. (2022) Assessment of imaging models for volumetric tomography of fluid flows. Measurement
    Academic article
  • Indlekofer, Thomas; Ahn, Byeonguk; Kwah, Yi Hao; Wiseman, Samuel; Mazur, Marek; Dawson, James. (2021) The effect of hydrogen addition on the amplitude and harmonic response of azimuthal instabilities in a pressurized annular combustor. Combustion and Flame
    Academic article
  • Nygård, Håkon Tormodsen; Ghirardo, Giulio; Worth, Nicholas. (2021) Azimuthal flame response and symmetry breaking in a forced annular combustor. Combustion and Flame
    Academic article
  • Æsøy, Eirik; Aguilar, Jose; Bothien, Mirko R.; Worth, Nicholas; Dawson, James. (2021) Acoustic-Convective Interference in Transfer Functions of Methane/Hydrogen and Pure Hydrogen Flames. Journal of Engineering For Gas Turbines and Power
    Academic article
  • Ahn, Byeonguk; Indlekofer, Thomas; Dawson, James; Worth, Nicholas. (2021) Transient Thermo-Acoustic Responses of Methane/Hydrogen Flames in a Pressurized Annular Combustor. Journal of Engineering For Gas Turbines and Power
    Academic article
  • Nygård, Håkon Tormodsen; Worth, Nicholas. (2021) Flame transfer functions and dynamics of a closely confined premixed bluff body stabilized flame with swirl. Journal of Engineering For Gas Turbines and Power
    Academic article
  • Æsøy, Eirik; Nygård, Håkon Tormodsen; Worth, Nicholas; Dawson, James Richard. (2021) Tailoring the gain and phase of the flame transfer function through targeted convective-acoustic interference. Combustion and Flame
    Academic article
  • Æsøy, Eirik; Aguilar, Jose; Worth, Nicholas; Dawson, James. (2021) The response of an axisymmetric jet placed at various positions in a standing wave. Journal of Fluid Mechanics
    Academic article
  • Helvig, Sanne de Jong; Vinnes, Magnus Kyrkjebø; Segalini, Antonio; Worth, Nicholas; Hearst, R. Jason. (2021) A comparison of lab-scale free rotating wind turbines and actuator disks. Journal of Wind Engineering and Industrial Aerodynamics
    Academic article
  • Worth, Nicholas; Mistry, Dhiren; Berk, Tim; Dawson, James. (2020) Vortex dynamics of a jet at the pressure node in a standing wave. Journal of Fluid Mechanics
    Academic article
  • Æsøy, Eirik; Aguilar, Jose; Wiseman, Samuel; Bothien, Mirko R.; Worth, Nicholas; Dawson, James. (2020) Scaling and prediction of transfer functions in lean premixed H2/CH4-flames. Combustion and Flame
    Academic article
  • Mazur, Marek; Kwah, Yi Hao; Indlekofer, Thomas; Dawson, James; Worth, Nicholas. (2020) Self-excited longitudinal and azimuthal modes in a pressurised annular combustor. Proceedings of the Combustion Institute
    Academic article
  • Ghirardo, Giulio; Nygård, Håkon Tormodsen; Cuquel, Alexis; Worth, Nicholas. (2020) Symmetry breaking modelling for azimuthal combustion dynamics. Proceedings of the Combustion Institute
    Academic article
  • Knutsen, Anna Nina; Baj, Pawel; Lawson, John M; Bodenschatz, Eberhard; Dawson, James; Worth, Nicholas. (2020) The inter-scale energy budget in a von Kármán mixing flow. Journal of Fluid Mechanics
    Academic article
  • Mazur, Marek; Nygård, Håkon Tormodsen; Dawson, James; Worth, Nicholas. (2019) Characteristics of self-excited spinning azimuthal modes in an annular combustor with turbulent premixed bluff-body flames. Proceedings of the Combustion Institute
    Academic article
  • Zettervall, Niklas; Worth, Nicholas; Mazur, Marek; Dawson, James; Fureby, Christer. (2019) Large eddy simulation of CH4-air and C2H4-air combustion in a model annular gas turbine combustor. Proceedings of the Combustion Institute
    Academic article
  • Nygård, Håkon Tormodsen; Mazur, Marek; Dawson, James; Worth, Nicholas. (2019) Flame dynamics of azimuthal forced spinning and standing modes in an annular combustor. Proceedings of the Combustion Institute
    Academic article
  • Worth, Nicholas; Dawson, James. (2019) Characterisation of flame surface annihilation events in self excited interacting flames. Combustion and Flame
    Academic article
  • Lawson, John M; Bodenschatz, Eberhard; Knutsen, Anna Nina; Dawson, James; Worth, Nicholas. (2019) Direct assessment of Kolmogorov's first refined similarity hypothesis. Physical Review Fluids
    Academic article
  • Kozul, Melissa; Koothur, Vipin; Worth, Nicholas; Dawson, James. (2019) A scanning particle tracking velocimetry technique for high‑Reynolds number turbulent flows. Experiments in Fluids
    Academic article
  • Worth, Nicholas; Dawson, J R. (2017) Effect of equivalence ratio on the modal dynamics of azimuthal combustion instabilities. Proceedings of the Combustion Institute
    Academic article
  • Worth, Nicholas; Dawson, J R; Sidey, Jenni Am; Mastorakos, Epaminondas. (2017) Azimuthally forced flames in an annular combustor. Proceedings of the Combustion Institute
    Academic article
  • Knutsen, Anna Nina; Lawson, John M; Dawson, J R; Worth, Nicholas. (2017) A laser sheet self-calibration method for scanning PIV. Experiments in Fluids
    Academic article
  • Giusti, Andrea; Worth, Nicholas; Mastorakos, Epaminondas; Dowling, Ann. (2016) Experimental and Numerical Investigation into the Propagation of Entropy Waves. AIAA Journal
    Academic article
  • Bauerheim, M.; Staffelbach, G.; Worth, Nicholas; Dawson, J R; Gicquel, L.Y.M.; Poinsot, T.. (2015) Sensitivity of LES-based harmonic flame response model for turbulent swirled flames and impact on the stability of azimuthal modes. Proceedings of the Combustion Institute
    Academic article
  • Dawson, J R; Worth, Nicholas. (2015) The effect of baffles on self-excited azimuthal modes in an annular combustor. Proceedings of the Combustion Institute
    Academic article
  • Dawson, James; Worth, Nicholas. (2014) Flame dynamics and unsteady heat release rate of self-excited azimuthal modes in an annular combustor. Combustion and Flame
    Academic article
  • Worth, Nicholas; Dawson, James. (2013) Tomographic reconstruction of OH* chemiluminescence in two interacting turbulent flames. Measurement Science and Technology
    Academic article
  • Worth, Nicholas; Dawson, James. (2013) Self-excited circumferential instabilities in a model annular gas turbine combustor: global flame dynamics. Symposium, International, on combustion
    Academic article
  • Worth, Nicholas; Dawson, James. (2013) Modal dynamics of self-excited azimuthal instabilities in an annular combustion chamber. Combustion and Flame
    Academic article
  • Aydemir, E.; Worth, Nicholas; Dawson, James. (2012) The formation of vortex rings in a strongly forced round jet. Experiments in Fluids
    Academic article
  • Worth, Nicholas; Dawson, James. (2012) Cinematographic OH-PLIF measurements of two interacting turbulent premixed flames with and without acoustic forcing. Combustion and Flame
    Academic article
  • Worth, Nicholas; Nickels, T. B.. (2011) Time-resolved volumetric measurement of fine-scale coherent structures in turbulence. Physical Review E. Statistical, Nonlinear, and Soft Matter Physics
    Academic article
  • Worth, Nicholas; Nickels, T. B.. (2011) Some characteristics of thin shear layers in homogeneous turbulent flow. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
    Academic article
  • Worth, Nicholas; Nickels, Timothy; Swarminathan, Nedunchezian. (2010) A tomographic PIV resolution study based on homogeneous isotropic turbulence DNS data. Experiments in Fluids
    Academic article
  • Worth, Nicholas; Nickels, Timothy. (2008) Acceleration of Tomo-PIV by estimating the initial volume intensity distribution. Experiments in Fluids
    Academic article

Part of book/report

  • Su, Tong; Xu, Boyan; Bastiaans, Rob; Worth, Nicholas Alexander. (2024) Lean Blow-Off Behaviour of Premixed Bluff-Body Stabilized Hydrocarbon-Air Flames and Ammonia/Hydrogen/Nitrogen-Air Flames. The American Society of Mechanical Engineers (ASME)
    Academic chapter/article/Conference paper
  • Ånestad, Aksel; Sampath, Ramgopal; Moeck, Jonas; Gruber, Andrea; Worth, Nicholas Alexander. (2023) THE STRUCTURE AND STABILITY OF PREMIXED CH4, H2, AND NH3/H2 FLAMES IN AN AXIALLY STAGED CAN COMBUSTOR. The American Society of Mechanical Engineers (ASME)
    Academic chapter/article/Conference paper

Teaching

Courses

  • TEP4926 - Termo- og fluiddynamikk, masteroppgave
  • TEP4541 - Termo- og fluiddynamikk, fordypningsprosjekt
  • EP8413 - Veiledet studieemne i termo- og fluiddynamikk
  • TEP4135 - Fluidmekanikk 2

Outreach

2024

  • Academic lecture
    Ånestad, Aksel; Æsøy, Eirik; Dawson, James Richard; Worth, Nicholas Alexander. (2024) Mitigating Thermoacoustic Instabilities in Premixed Hydrogen Flames using Axial Staging. The Combustion Institute 40th International Symposium on Combustion , Milano 2024-07-21 - 2024-07-26

2023

  • Academic lecture
    Ånestad, Aksel; Sampath, Ramgopal; Moeck, Jonas; Worth, Nicholas Alexander. (2023) The Effect of Second Stage H2 Addition on the Stability of an Axially Staged Can Combustor. ETH Symposium on Thermoacoustics in Combustion (SoTiC) , Zurich 2023-09-11 - 2023-09-14
  • Lecture
    Ahn, Byeonguk; Nygård, Håkon Tormodsen; Li, Larry; Worth, Nicholas Alexander. (2023) Flame Dynamics in a Pressurised Annular Combustor with Simultaneous Longitudinal-Azimuthal Thermoacoustic Modes . Combustion Institute 14th Asia-Pacific Conference on Combustion , Kaohsiung Exhibition Center, Kaohsiung, Taiwan 2023-05-14 - 2023-05-18
  • Academic lecture
    Ånestad, Aksel; Sampath, Ramgopal; Moeck, Jonas; Gruber, Andrea; Worth, Nicholas Alexander. (2023) The Structure of CH4, H2 and NH3/H2 Flames in an Axially Staged Can Combustor. ASME ASME Turbo Expo 2023 , Boston 2023-06-26 - 2023-06-30
  • Academic lecture
    Ånestad, Aksel; Sampath, Ramgopal; Gruber, Andrea; Moeck, Jonas; Worth, Nicholas Alexander. (2023) The Structure and Stability of Premixed CH4, H2, and NH3/H2 Flames in an Axially Staged Can Combustor. ASME IGTI ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition , Boston, Massechusets, USA 2023-06-26 - 2023-06-30

2022

  • Academic lecture
    Æsøy, Eirik; Jankee, Girish Kumarsing; Yadala Venkata, Srikar; Worth, Nicholas; Dawson, James Richard. (2022) Suppression of self-excited thermoacoustic instabilities by convective-acoustic interference. The Combustion Institute 39th International Symposium on Combustion , Vancouver 2022-07-24 - 2022-07-29
  • Academic lecture
    Yadala Venkata, Srikar; Jankee, Girish Kumarsing; Æsøy, Eirik; Dawson, James; Worth, Nicholas. (2022) INFLUENCE OF A CYLINDER INSTALLED UPSTREAM ON THE FLOW FIELD OF A TURBULENT JET . 12th International Symposium on Turbulence and Shear Flow Phenomena (TSFP12) 2022-07-19 - 2022-07-22
  • Academic lecture
    Ånestad, Aksel; Ahn, Byeonguk; Nygård, Håkon Tormodsen; Worth, Nicholas. (2022) THE EFFECT OF RECTANGULAR CONFINEMENT ASPECT RATIO ON THE FLAME TRANSFER FUNCTION OF A TURBULENT SWIRLING FLAME. ASME ASME Turbo Expo 2022, Turbomachinery Technical Conference and Exposition , Rotterdam 2022-06-13 - 2022-06-17
  • Academic lecture
    Jankee, Girish Kumarsing; Yadala Venkata, Srikar; Æsøy, Eirik; Dawson, James; Worth, Nicholas. (2022) DATA-DRIVEN MODEL FOR VORTEX LOCK-IN OF CIRCULAR CYLINDERS IN AN ACOUSTICALLY-DRIVEN OSCILLATORY FLOW. 12th International Symposium on Turbulence and Shear Flow Phenomena 2022-07-19 - 2022-07-22

2021

  • Academic lecture
    Æsøy, Eirik; Aguilar, Jose; Bothien, Mirko R.; Worth, Nicholas; Dawson, James Richard. (2021) Acoustic-Convective Interference In Transfer Functions of Methane/Hydrogen and Pure Hydrogen Flames. ASME Turbo Expo: Power for Land, Sea, and Air , Online 2021-06-07 - 2021-06-11
  • Academic lecture
    Buschmann, Philip Erik; Worth, Nicholas; Moeck, Jonas. (2021) Experimental study of thermoacoustic modes in a can-annular model combustor. TU Munich SOTIC - Symposium on thermoacoustics in combustion: Industry meets Academia , Munich 2021-09-06 - 2021-09-10

2020

  • Academic lecture
    Nygård, Håkon Tormodsen; Worth, Nicholas. (2020) Flame Transfer Functions and Dynamics of a Closely Confined Premixed Bluff Body Stabilised Flame With Swirl. ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition , Virtual Online event 2020-09-21 - 2020-09-25

2018

  • Academic lecture
    Kushwaha, Abhijit; Mazur, Marek; Worth, Nicholas; Dawson, James; Li, Larry. (2018) Recurrence analysis of a globally unstable jet subjected to transverse acoustic forcing. APS DFD18 Meeting of The American Physical Society , Atlanta 2018-11-18 - 2018-11-20
  • Academic lecture
    Knutsen, Anna Nina; Dawson, James; Baj, Pawel; Worth, Nicholas; Bodenschatz, Eberhard; Lawson, John M. (2018) An experimental investigation of the turbulent cascade in a von Kármán mixing tank. DFD18 Meeting of The American Physical Society 2018-11-18 - 2018-11-20
  • Academic lecture
    Kozul, Melissa; Koothur, Vipin; Worth, Nicholas; Dawson, James. (2018) A novel particle tracking technique using a scanning laser setup tested via numerical experiment. DFD18 Meeting of The American Physical Society , Atlanta 2018-11-18 - 2018-11-20
  • Academic lecture
    Koothur, Vipin; Kozul, Melissa; Worth, Nicholas; Dawson, James. (2018) Introduction and Testing of a Novel Scanning Particle Tracking Velocimetry Technique. 19th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics , Lisbon 2018-07-16 - 2018-07-19
  • Academic lecture
    Mazur, Marek; Nygård, Håkon Tormodsen; Dawson, James; Worth, Nicholas. (2018) Experimental Study of Damper Position on Instabilities in an Annular Combustor. ASME ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition , Oslo 2018-06-11 - 2018-06-15
  • Academic lecture
    Baj, Pawel; Dawson, James; Worth, Nicholas; Lawson, John M; Bodenschatz, Eberhard. (2018) An investigation of the structure-conditioned turbulence kinetic energy budget. APS DFD18 Meeting of The American Physical Society , Atlanta 2018-11-18 - 2018-11-20

2017

  • Academic lecture
    Nygård, Håkon Tormodsen; Mazur, Marek; Dawson, J R; Worth, Nicholas. (2017) Azimuthally spinning wave modes and heat release in an annu- lar combustor. APS DFD17 Meeting of The American Physical Society , Colorado 2017-11-19 - 2017-11-21
  • Academic lecture
    Mistry, Dhiren; Hanssen-Bauer, Øyvind Waage; Worth, Nicholas; Dawson, J R. (2017) Near-field response of an axisymmetric jet to transverse acoustic forcing. 16th European Turbulence Conference , Stockholm 2017-07-21 - 2017-07-24

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