Forschung: DNS und LES der Wasserstoffverbrennung

2025

• F. Fruzza, H. Chu, R. Lamioni, T. Grenga, C. Galletti and H. Pitsch. Three-dimensional numerical investigation of flashback in premixed hydrogen flames within perforated burners. Combustion and Flame, vol. 274, page 113987, 2025. [DOI]
• H. Chu, T. Li, H. Bai, Z. Li and H. Pitsch. Numerical investigation of hot-spot surface ignition of hydrogen-air mixtures. Proceedings of the 12th European Combustion Meeting, April 7-10, Edinburgh (Scotland), UK, 2025.
• Z. Li, H. Chu, L. Gregory, R. Glaznev, J. Beeckmann, M. Gauding and H. Pitsch. Flame Propagation of Refrigerant R-1234yf (CF3CFCH2) in Humid Air: A DNS Study. Proceedings of the 12th European Combustion Meeting, April 7-10, Edinburgh (Scotland), UK, 2025.
• H. Chu, H. Bai, F. Ramognino, L. Sforza and H. Pitsch. Impact of spark channel-turbulence interactions on the early flame kernel development under engine conditions. Proceedings of the 12th European Combustion Meeting, April 7-10, Edinburgh (Scotland), UK, 2025.
• H. Bao, H. Chu, S. Bose and H. Pitsch. Effects of an oxide lobe on the combustion of aluminum particle using boundary layer resolved simulations. Proceedings of the 12th European Combustion Meeting, April 7-10, Edinburgh (Scotland), UK, 2025.
• H. Chu, L Berger, M. Gauding, S. Pieper and H. Pitsch. Interactions of preferential diffusion and mixture inhomogeneities in hydrogen and iso-octane flame kernels under engine conditions. Combustion and Flame, vol. 274, page 113991, 2025. [DOI]
• L. Piu, A. Péquin, S. Iavarone, R. S. M. Freitas, K. S. Jung, H. Chu, H. Pitsch and A. Parente. Bayesian neural networks for Arrhenius-based turbulent combustion closures in large eddy simulations. Proceedings of the 12th European Combustion Meeting, April 7-10, Edinburgh (Scotland), UK, 2025.
• S. Bose, P. Ye, H. Chu, B. Böhm and H. Pitsch. Computational and Experimental Study of Effective Chemical Time-Scale for Flame Wrinkling in Hydrogen Engines. Proceedings of the 12th European Combustion Meeting, April 7-10, Edinburgh (Scotland), UK, 2025.
• H. Chu, V. Varatharajan, B. Pehlivanlar, T. Lehmann, L. Berger, D. Golc, S. Esposito, T. Howarth, E. Porcelli, D. Laera, M. Günther, M. Gauding, J. Beeckmann, S. Pischinger and H. Pitsch. An extended G-equation formulation for simulating thermodiffusively unstable hydrogen flames. Proceedings of the 12th European Combustion Meeting, April 7-10, Edinburgh (Scotland), UK, 2025.

2024

• H. Chu, S. Bose, M. Mobarakeh, P. Farmand, R. Kholghy and H. Pitsch. Modeling Single Aluminum Particle Combustion in Various Oxidizers. In 19th International Conference on Numerical Combustion, 2024.
• H. Chu, S. Bose, M. Mobarakeh, P. Farmand, R. Kholghy and H. Pitsch. Sensitivity Analysis of Point-particle Models for Aluminum Particle Combustion. 2nd International MeCRE Conference 2024, 13-15 November, Darmstadt, Germany, 2024.
• H. Chu, L. Berger, M. Gauding, A. Attili and H. Pitsch. Effects of dilatation and turbulence on tangential strain rates in premixed hydrogen and iso-octane flames. Journal of Fluid Mechanics, vol. 981, page A5, 2024. [DOI]
• Filippo Fruzza, Hongchao Chu, Rachele Lamioni, Temistocle Grenga, Chiara Galletti and Heinz Pitsch. The importance of Soret effect, preferential diffusion, and conjugate heat transfer for flashback limits of hydrogen-fueled perforated burners. Proceedings of the Combustion Institute, vol. 40 no. 1, page 105581, 2024. [DOI]
• T. Howarth, M. Gauding, X. Wen, H. Chu, L. Berger, E. Hunt, M. Rieth, A. Aspden and H. Pitsch. Lean premixed hydrogen flames – some updates since Vancouver. Turbulent Flame Combustion Workshop, 2024.
• H. Chu, L. Berger, M. Gauding, S. Pieper and H. Pitsch. Preferential diffusion effects on hydrogen and iso-octane flames in inhomogeneous mixtures. The 16th International Workshop on Measurement and Computation of Turbulent Flames (TNF), July 20-21, Milan, Italy, 2024, 2024.

2023

• H. Chu and H. Pitsch. Effects of mixture inhomogeneity on flame kernel interactions with turbulence. The China National Symposium on Combustion, 2023.
• Hongchao Chu, Lukas Berger, Temistocle Grenga, Michael Gauding, Liming Cai and Heinz Pitsch. Effects of turbulence on variations in early development of hydrogen and iso-octane flame kernels under engine conditions. Combustion and Flame, vol. 255, 09 2023. [DOI]
• H. Chu, L Berger, M. Gauding, S. Pieper and H Pitsch. Effects of equivalence ratio inhomogeneities on hydrogen and iso-octane flame kernel development under engine conditions. In 31. Deutscher Flammentag für nachhaltige Verbrennung, Berlin, 2023.
• Hongchao Chu, Lukas Berger, Temistocle Grenga, Zhao Wu and Heinz Pitsch. Effects of differential diffusion on hydrogen flame kernel development under engine conditions. Proceedings of the Combustion Institute, vol. 39 no. 2, pages 2129-2138, 2023. [DOI]
• Hongchao Chu, Lukas Berger, Michael Gauding and Heinz Pitsch. Effects of dilatation and turbulence on tangential strain rate of premixed hydrogen and iso-octane flames under engine conditions. Proceedings of the 11th European Combustion Meeting 2023, 2023.
• H. Chu, L. Berger, T. Grenga, M. Gauding, L. Cai and H. Pitsch. Effects of turbulence on variations in early development of hydrogen and iso-octane flame kernels under engine conditions. Combustion and Flame, vol. 255, page 112914, 2023. [DOI]

2022

• H. Chu, C. Welch, E. Hani, S. Cao, M. Davidovic, B. Böhm, A. Dreizler and H. Pitsch. A Combined Numerical and Experimental Investigation of Cycle‑to‑Cycle Variations in an Optically Accessible Spark‑Ignition Engine. Flow, Turbulence and Combustion, 2022.
• H. Chu, M. Davidovic, L. Berger and H. Pitsch. A Comparison of Early Flame Kernel Development in Hydrogen/Air and iso-Octane/Air Mixtures under Engine Conditions. 18th International Conference on Numerical Combustion, 8-11 May 2022, San Diego, USA, 2022.

2021

• H. Chu, M. Davidovic, H. Elmestikawy, C. Welch, B. Böhm, A. Dreizler and H. Pitsch. Investigation of residual gas effects on early flame kernel evelopment under engine conditions. In Proceedings of the 10th European Combustion Meeting, April 14-15, Naples (Italy) / Online, 2021.

2020

• T. Falkenstein, M. Davidovic, A. Attili, M. Bode, H. Chu, S. Kang, H. Pitsch and H. Taniguchi. LES Modeling Study on Cycle-to-Cycle Variations in a DISI Engine. SAE Technical Paper, vol. 2020-01-0242, 2020. [DOI]

2018

• T. Falkenstein, M. Davidovic, H. Chu, K. Kleinheinz, M. Bode, S. Kang and H. Pitsch. DNS and LES of Early Flame Kernel Development in Spark Ignition Engines. In LES for Internal Combustion Engine Flows LES4ICE, 11th – 12th December, France, 2018.