2025

• Salimi, Salar Zamani; Gruber, Andrea; Scapin, Nicolò; Brandt, Luca. (2025) Evaporation of finite-size ammonia and n-heptane droplets in weakly compressible turbulence: An interface-resolved DNS study. International Journal of Heat and Mass Transfer
  Academic article
• Meyer, Ole; Tay-Wo-Chong, Luis; Ciani, Andrea; Gruber, Andrea. (2025) Numerical concept study for part-load operation of the Ansaldo Constant Pressure Sequential Combustion system operated in Rich-Dilute-Lean mode using ammonia-based gaseous fuels. Journal of Engineering For Gas Turbines and Power
  Academic article
• Proniewicz, Mateusz; Petela, Karolina; Mounaïm-Rousselle, Christine; Bothien, Mirko R.; Gruber, Andrea; Fan, Yong. (2025) Preliminary Comparison of Ammonia- and Natural Gas-Fueled Micro-Gas Turbine Systems in Heat-Driven CHP for a Small Residential Community. Energies
  Academic article
• Meyer, Ole; Gruber, Andrea; Tay-Wo-Chong, Luis; Ciani, Andrea. (2025) Numerical Concept Study for Part-Load Operation of the Ansaldo Constant Pressure Sequential Combustion System Operated in Rich-Dilute-Lean Mode Using Ammonia-Based Gaseous Fuels.
  Academic chapter/article/Conference paper
• Richter, Martin; Lill, Johannes; Barlow, Robert S.; Gruber, Andrea; Dreizler, A.; Dawson, James. (2025) Quantification of NO in the post-flame region of laminar premixed ammonia/hydrogen/nitrogen-air flames using laser induced fluorescence. Combustion and Flame
  Academic article

2024

• Gopalakrishnan, Harish Subramanian; Maddipati, Raj; Gruber, Andrea; Bothien, Mirko; Aditya, Konduri. (2024) A Reactor-Network Framework to Model Performance and Emissions of a Longitudinally-Staged Combustion System for Carbon-Free Fuels.
  Academic chapter/article/Conference paper
• Heggset, Tarjei; Meyer, Ole; Tay-Wo-Chong, Luis; Ciani, Andrea Camperio; Gruber, Andrea. (2024) Numerical Assessment of a Rich-Quench-Lean Staging Strategy for Clean and Efficient Combustion of Partially Decomposed Ammonia in the Constant Pressure Sequential Combustion System. Journal of Engineering For Gas Turbines and Power
  Academic article
• Klimanek, Adam; Adamczyk, Wojciech; Sladek, Slawomir; Fan, Yong; Bothien, Mirko R.; Gruber, Andrea. (2024) Prediction of ammonia ignition/quenching and emissions of NOx, NH3 and H2 in a non-premixed swirl combustor using the EDC model. Case Studies in Thermal Engineering
  Academic article
• Akash, Rodhiya; Gruber, Andrea; Bothien, Mirko; Chen, Jacqueline H.; Konduri, Aditya. (2024) Spontaneous ignition and flame propagation in hydrogen/methane wrinkled laminar flames at reheat conditions: Effect of pressure and hydrogen fraction. Combustion and Flame
  Academic article
• Rieth, Martin; Gruber, Andrea; Hawkes, Evatt R.; Chen, Jacqueline H.. (2024) Direct numerical simulation of low-emission ammonia rich-quench-lean combustion. Proceedings of the Combustion Institute
  Academic article
• Gopalakrishnan, Harish Subramanian; Maddipati, Raj; Gruber, Andrea; Bothien, Mirko; Aditya, Konduri. (2024) A Reactor-Network Framework to Model Performance and Emissions of a Longitudinally Staged Combustion System for Carbon-Free Fuels. Journal of Engineering For Gas Turbines and Power
  Academic article
• Heggset, Tarjei; Meyer, Ole; Gruber, Andrea; Tay-Wo-Chong, Luis; Ciani, Andrea Camperio. (2024) Combustion Optimization and Burnout of Ammonia-Based Gaseous Fuels in the Constant Pressure Sequential Combustion System Operated in Rich-Quench-Lean Mode.
  Academic chapter/article/Conference paper
• Gruber, Andrea; Meyer, Ole; Heggset, Tarjei; Wood, Birute; Ciani, Andrea Camperio. (2024) Numerical Investigation of Reheat Hydrogen Flames in the Sequential-Combustion Stage of a Heavy-Duty Gas Turbine.
  Academic chapter/article/Conference paper
• Indlekofer, Thomas; Haugen, Nils Erland L; Førde, Olav Øyvind; Gruber, Andrea. (2024) Numerical Investigation of Premixed and Non-premixed Ammonia Main Charge Configurations Ignited by a Hydrogen-Fired Prechamber. SAE International Journal of Engines
  Academic article

2023

• Chen, Guo; Wang, Haiou; Gruber, Andrea; Luo, Kun; Fan, Jianren. (2023) Study of flame-flow interactions in turbulent boundary layer premixed flame flashback over a flat plate using direct numerical simulation. Journal of Fluid Mechanics
  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
• Indlekofer, Thomas; Wiseman, Samuel Michael; Nogenmyr, Karl-Johan; Larfeldt, Jenny; Gruber, Andrea. (2023) Numerical Investigation of Rich-Lean Staging in a SGT-750 Scaled Dry Low Emission Burner With Partially Decomposed Ammonia. Journal of Engineering For Gas Turbines and Power
  Academic article
• Gruber, Andrea; Heggset, Tarjei; Meyer, Ole; Altenburg, Luuk; Tummers, Mark; Klein, Sikke. (2023) Numerical and Experimental Investigation of a Geometrically Simplified, Two-Dimensional FlameSheet™ Hydrogen Burner.
  Academic chapter/article/Conference paper
• Heggset, Tarjei; Meyer, Ole; Gruber, Andrea; Tay-Wo-Chong, Luis; Ciani, Andrea Camperio. (2023) Numerical Assessment of a Rich-Quench-Lean Staging Strategy for Clean and Efficient Combustion of Partially Decomposed Ammonia in the Constant Pressure Sequential Combustion System.
  Academic chapter/article/Conference paper
• Rieth, Martin; Gruber, Andrea; Chen, Jacqueline H.. (2023) The effect of pressure on lean premixed hydrogen-air flames. Combustion and Flame
  Academic article
• Gopalakrishnan, Harish Subramanian; Gruber, Andrea; Moeck, Jonas. (2023) Computation and prediction of intrinsic thermoacoustic oscillations associated with autoignition fronts. Combustion and Flame
  Academic article
• Rieth, Martin; Gruber, Andrea; Chen, Jacqueline H.. (2023) A direct numerical simulation study on NO and N2O formation in turbulent premixed ammonia/hydrogen/nitrogen-air flames. 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 CH4, H2, AND NH3/H2 FLAMES IN AN AXIALLY STAGED CAN COMBUSTOR.
  Academic chapter/article/Conference paper

2022

• Gopalakrishnan, Harish Subramanian; Gruber, Andrea; Moeck, Jonas. (2022) Computation of Intrinsic Instability and Sound Generation from Autoignition Fronts.
  Academic chapter/article/Conference paper
• Wiseman, Samuel Michael; Gruber, Andrea; Dawson, James. (2022) Flame Transfer Functions for Turbulent, Premixed, Ammonia-Hydrogen-Nitrogen-Air Flames. Journal of Engineering For Gas Turbines and Power
  Academic article
• Indlekofer, Thomas; Gruber, Andrea; Wiseman, Samuel Michael; Nogenmyr, Karl-Johan; Larfeldt, Jenny. (2022) Numerical Investigation of Rich-Lean Staging in SGT-750 Scaled DLE Burner With Partially-Decomposed Ammonia.
  Academic chapter/article/Conference paper
• Wiseman, Samuel Michael; Gruber, Andrea; Dawson, James. (2022) Flame Transfer Functions for Turbulent, Premixed, Ammonia-Hydrogen-Nitrogen-Air Flames.
  Academic chapter/article/Conference paper
• Gruber, Andrea; Heggset, Tarjei; Duesing, Michael; Ciani, Andrea Camperio. (2022) A Numerical Investigation of Reheat Hydrogen Combustion in a Simplified Geometrical Configuration from Atmospheric Pressure to Full Load Conditions.
  Academic chapter/article/Conference paper
• Gopalakrishnan, Harish Subramanian; Gruber, Andrea; Moeck, Jonas. (2022) Computation of Intrinsic Instability and Sound Generation From Auto-Ignition Fronts. Journal of Engineering For Gas Turbines and Power
  Academic article
• Richter, Martin; Schulthesis, R.; Dawson, James; Gruber, Andrea; Barlow, R.S.; Dreizler, A.. (2022) Extinction strain rates of premixed ammonia/hydrogen/nitrogen-air counterflow flames. Proceedings of the Combustion Institute
  Academic article

2021

• Salimath, Prashant; Ertesvåg, Ivar Ståle; Gruber, Andrea. (2021) Numerical simulations of combustion near solid and hydrogen permeable walls. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
  Doctoral dissertation
• Gopalakrishnan, Harish Subramanian; Gruber, Andrea; Moeck, Jonas. (2021) Response of Autoignition-Stabilized Flames to One-Dimensional Disturbances: Intrinsic Response. Journal of Engineering For Gas Turbines and Power
  Academic article
• Rodhiya, Akash; Aditya, Konduri; Gruber, Andrea; Chen, Jacqueline H.. (2021) Simulations of flame structure in a reheat burner: pressure scaling.
  Academic chapter/article/Conference paper
• Rieth, Martin; Gruber, Andrea; Williams, Forman Arthur; Chen, Jacqueline H.. (2021) Enhanced burning rates in hydrogen-enriched turbulent premixed flames by diffusion of molecular and atomic hydrogen. Combustion and Flame
  Academic article
• Stefan, Elena; Talic, Belma; Larring, Yngve; Gruber, Andrea; Peters, Thijs. (2021) Materials challenges in hydrogen-fuelled gas turbines. International Materials Reviews
  Academic article
• Netzer, Corinna; Ahmed, Ahfaz; Gruber, Andrea; Løvås, Terese. (2021) Curvature effects on NO formation in wrinkled laminar ammonia/hydrogen/nitrogen-air premixed flames. Combustion and Flame
  Academic article
• Gruber, Andrea; Bothien, Mirko R.; Ciani, Andrea Camperio; Aditya, Konduri; Chen, Jacqueline H.; Williams, Forman Arthur. (2021) Direct Numerical Simulation of hydrogen combustion at auto-ignitive conditions: Ignition, stability and turbulent reaction-front velocity. Combustion and Flame
  Academic article
• Feng, Ruixue; Gruber, Andrea; Chen, Jacqueline H.; Valiev, Damir M.. (2021) Influence of gas expansion on the propagation of a premixed flame in a spatially periodic shear flow. Combustion and Flame
  Academic article

2020

• Lupo, Giandomenico; Gruber, Andrea; Brandt, Luca; Duwig, Christophe. (2020) Direct numerical simulation of spray droplet evaporation in hot turbulent channel flow. International Journal of Heat and Mass Transfer
  Academic article
• Gant, Francesco; Gruber, Andrea; Bothien, Mirko R.. (2020) Development and validation study of a 1D analytical model for the response of reheat flames to entropy waves. Combustion and Flame
  Academic article
• Wiseman, Samuel; Rieth, Martin; Gruber, Andrea; Dawson, James; Chen, Jacqueline H.. (2020) A comparison of the blow-out behavior of turbulent premixed ammonia/hydrogen/nitrogen-air and methane–air flames. Proceedings of the Combustion Institute
  Academic article
• Salimath, Prashant; Ertesvåg, Ivar Ståle; Gruber, Andrea. (2020) Computational analysis of premixed methane-air flame interacting with a solid wall or a hydrogen porous wall. Fuel
  Academic article

2019

• Gruber, Andrea. (2019) Direct numerical simulation: Present and future role in fundamental and applied combustion research.
  Academic chapter/article/Conference paper
• Aditya, Konduri; Gruber, Andrea; Xu, Chao; Lu, Tianfeng F.; Krisman, Alex; Bothien, Mirko R.. (2019) Direct numerical simulation of flame stabilization assisted by autoignition in a reheat gas turbine combustor. Proceedings of the Combustion Institute
  Academic article
• Jiang, Yuanjie; Gruber, Andrea; Seshadri, Kalyanasundaram; Williams, Forman. (2019) An updated short chemical‐kinetic nitrogen mechanism for carbon‐free combustion applications. International Journal of Energy Research
  Academic article
• Jiang, Yuanjie; Serrano, Gonzalo del Alamo; Gruber, Andrea; Bothien, Mirko R.; Seshadri, Kalyanasundaram; Williams, Forman Arthur. (2019) A skeletal mechanism for prediction of ignition delay times and laminar premixed flame velocities of hydrogen-methane mixtures under gas turbine conditions. International Journal of Hydrogen Energy
  Academic article

2018

• Salimath, Prashant Siddlinggayya; Ertesvåg, Ivar Ståle; Gruber, Andrea. (2018) Premixed hydrogen-air flames interacting with a hydrogen porous wall. International Journal of Hydrogen Energy
  Academic article
• Vodicka, Matej; Haugen, Nils Erland L; Gruber, Andrea; Hrdlicka, Jan. (2018) NOX formation in oxy-fuel combustion of lignite in a bubbling fluidized bed – Modelling and experimental verification. International Journal of Greenhouse Gas Control
  Academic article
• Gruber, Andrea; Richardson, Edward S.; Aditya, Konduri; Chen, Jacqueline H.. (2018) Direct numerical simulations of premixed and stratified flame propagation in turbulent channel flow. Physical Review Fluids
  Academic article

2017

• Gjennestad, Magnus Aashammer; Gruber, Andrea; Lervåg, Karl Yngve; Johansen, Øyvind; Ervik, Åsmund; Hammer, Morten. (2017) Computation of three-dimensional three-phase flow of carbon dioxide using a high-order WENO scheme. Journal of Computational Physics
  Academic article
• Gounder, James D.; Kutne, Peter; Gruber, Andrea. (2017) Experimental Investigation of a Bluff Body Burner for Distributed Hydrogen Injection.
  Academic chapter/article/Conference paper

2016

• Bremer, Peer-Timo; Gruber, Andrea; Bennett, Janine C.; Gyulassy, Attila; Kolla, Hemanth; Chen, Jacqueline H.. (2016) Identifying turbulent structures through topological segmentation. Communications in Applied Mathematics and Computational Science
  Academic article

2015

• Gruber, Andrea; Kerstein, Alan R; Valiev, Damir M.; Law, C.K.; Kolla, Hemanth; Chen, Jacqueline H.. (2015) Modeling of mean flame shape during premixed flame flashback in turbulent boundary layers. Symposium, International, on combustion
  Academic article
• Minamoto, Yuki; Kolla, Hemanth; Grout, Ray W; Gruber, Andrea; Chen, Jacqueline H.. (2015) Effect of fuel composition and differential diffusion on flame stabilization in reacting syngas jets in turbulent cross-flow. Combustion and Flame
  Academic article

2014

• Lietz, C.; Hassanaly, M.; Raman, V.; Kolla, Hemanth; Chen, J.; Gruber, Andrea. (2014) Large Eddy Simulation of premixed flame flashback in a turbulent channel.
  Academic chapter/article/Conference paper
• Gruber, Andrea; Salimath, Prashant Siddlinggayya; Chen, Jacqueline H.. (2014) Direct numerical simulation of laminar flame-wall interaction for a novel H2-selective membrane/injector configuration. International Journal of Hydrogen Energy
  Academic article
• North, Andrew; Magar, M.; Chen, J.Y.; Dibble, R.W; Gruber, Andrea. (2014) Effect of pressure, environment temperature, jet velocity and nitrogen dilution on the liftoff characteristics of a N2-in-H2jet flame in a vitiated co-flow. Eurasian Chemico-Technological Journal
  Academic article
• North, Andrew; Frederick, D.; Chen, J.Y.; Dibble, R.W; Gruber, Andrea. (2014) Stability and liftoff of a N2-in-H2 jet flame in a vitiated co-flow at atmospheric pressure. Eurasian Chemico-Technological Journal
  Academic article
• Jordal, Kristin; Anantharaman, Rahul; Gruber, Andrea; Peters, Thijs; Henriksen, Partow Pakdel; Berstad, David Olsson. (2014) GHGT-12 Performance of the IGCC with distributed feeding of H2 in the gas turbine burner. Energy Procedia
  Academic article

2013

• Kolla, Hemanth; Grout, Ray W.; Gruber, Andrea; Chen, Jacqueline H.. (2013) Transverse fuel jet in turbulent cross-flow: influence of fuel composition on near field flame stabilization.
  Academic chapter/article/Conference paper
• Weydahl, Torleif; Salimath, Prashant Siddlinggayya; Gruber, Andrea. (2013) Fundamental Modeling of a Membrane Reactor with in Situ Hydrogen Separation and Combustion. Energy Procedia
  Academic article

2012

• Grout, Ray W; Gruber, Andrea; Kolla, Hemanth; Bremer, Per-Timo; Bennett, Janine C.; Gyulassy, Attila. (2012) A direct numerical simulation study of turbulence and flame structure in transverse jets analysed in jet-trajectory based coordinates. Journal of Fluid Mechanics
  Academic article
• Panjwani, Balram; Ertesvåg, Ivar Ståle; Gruber, Andrea; Rian, Kjell Erik. (2012) Large eddy simulation in generalized curvilinear coordinates using conventional approach: Theory and validation. International Journal for Numerical Methods in Fluids
  Academic article
• Kolla, Hemanth; Grout, Ray W; Gruber, Andrea; Chen, Jacqueline H.. (2012) Mechanisms of flame stabilization and blowout in a reacting turbulent hydrogen jet in cross-flow. Combustion and Flame
  Academic article
• Gruber, Andrea; Chen, Jacqueline H.; Valiev, Damir M.; Law, Chung K.. (2012) Direct numerical simulation of premixed flame boundary layer flashback in turbulent channel flow. Journal of Fluid Mechanics
  Academic article

2011

• Grout, Ray W; Gruber, Andrea; Yoo, C.S.; Chen, J.H.. (2011) Direct numerical simulation of flame stabilization downstream of a transverse fuel jet in cross-flow. Symposium, International, on combustion
  Academic article
• Johannessen, Birgitte; Løvås, Terese; Gruber, Andrea. (2011) Modelling turbulent reactive flows for engineering applications.
  Academic chapter/article/Conference paper
• Frederick, Don; North, Andrew; Chen, Jyh-Yuan; Dibble, Robert; Gruber, Andrea. (2011) Analysis of flame propagation and autoignition for a lifted nitrogen-diluted hydrogen turbulent jet flame in a vitiated coflow.
  Academic chapter/article/Conference paper
• Gruber, Andrea. (2011) Hydrogenbrenner med lavt NOx-utslipp. Xergi
  Popular scientific article
• North, A.J.; Dibble, R.W; Chen, J.Y.; Frederick, D.J.; Gruber, Andrea. (2011) Liftoff Heights Of Lifted N2-in-H2 Jet Flames Issuing Into A Vitiated Co-Flow Measured Using Schlieren Imaging.
  Academic chapter/article/Conference paper
• Kolla, Hemanth; Grout, Ray W.; Gruber, Andrea; Chen, Jacqueline H.. (2011) Effect Of Injection Angle On Stabilization Of A Reacting Turbulent Hydrogen Jet In Cross-Flow.
  Academic chapter/article/Conference paper

2010

• Panjawani, B.; Ertesvåg, Ivar Ståle; Gruber, Andrea; Rian, Kjell Erik. (2010) Turbulence combustion closure model based on the Eddy dissipation concept for large eddy simulation. WIT Transactions on Engineering Sciences
  Academic article
• Grout, Ray W.; Richardson, E.S.; Gruber, Andrea; Yoo, C.S.; Chen, Jacqueline H.. (2010) Filtered density functions from direct numerical simulation of a reactive jet in cross-flow.
  Academic chapter/article/Conference paper
• Gruber, Andrea; Sankaran, Ramanan; Hawkes, Evatt R; Chen, Jacqueline H. (2010) Turbulent flame-wall interaction: a direct numerical simulation study. Journal of Fluid Mechanics
  Academic article

2009

• Panjwani, Balram; Ertesvåg, Ivar Ståle; Gruber, Andrea; Rian, Kjell Erik. (2009) Large Eddy Simulation of Backward Facing Step Flow.
  Academic chapter/article/Conference paper

2008

• Kennedy, Christopher A; Gruber, Andrea. (2008) Reduced aliasing formulations of the convective terms within the Navier–Stokes equations for a compressible fluid. Journal of Computational Physics
  Academic article
• Iki, Norihiko; Gruber, Andrea; Yoshida, H. (2008) A Numerical and an experimental study for optimization of a small annular combustor. Journal of Power and Energy Systems
  Academic article

2006

• Gruber, Andrea; Gran, Inge Røinaas. (2006) Direct Numerical Simulation Of Turbulent Combustion Near Solid Surfaces. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU, 1503-8181 (2006:14)
  Doctoral dissertation