Thermodiffusively unstable laminar hydrogen flame in a sufficiently large 3D computational domain -- Part I: Characteristic patterns

Autor: Xu, Wen, Lukas, Berger, Liming, Cai, Alessandro, Parente, Heinz, Pitsch

Publikováno v: Combustion and Flame, 2024

Thermodiffusive instabilities can have a leading order effect on flame propagation for lean premixed hydrogen flames. Many simulation studies have been performed to study this effect, but almost exclusively in two-dimensional (2D) or domain sizes too

Externí odkaz: http://arxiv.org/abs/2312.11810

Direct numerical simulation of flame-wall interaction at gas turbine relevant conditions

Autor: Kai Niemietz, Lukas Berger, Michael Huth, Antonio Attili, Heinz Pitsch

Publikováno v: Niemietz, K, Berger, L, Huth, M, Attili, A & Pitsch, H 2022, ' Direct numerical simulation of flame-wall interaction at gas turbine relevant conditions ', Proceedings of the Combustion Institute . https://doi.org/10.1016/j.proci.2022.09.022

A direct numerical simulation (DNS) with finite rate chemistry was performed to evaluate the main influences on carbon monoxide (CO) emissions in gas turbine combustion. A lean methane/air mixture is burned in fully turbulent jet flames in a domain e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8ab90b07c5602b4a30b88dc28c5c90d
https://hdl.handle.net/20.500.11820/bb3f70a9-81e6-4800-b2a2-4d0353b3db13

Effects of differential diffusion on hydrogen flame kernel development under engine conditions

Autor: Lukas Berger, Hongchao Chu, Zhao Wu, Temistocle Grenga, Heinz Pitsch

Publikováno v: Proceedings of the Combustion Institute.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::937eec3769101eecfa2021eb533485c0
https://doi.org/10.1016/j.proci.2022.07.042

Numerical analysis and flamelet modeling of NOx formation in a thermodiffusively unstable hydrogen flame

Autor: Xu Wen, Lukas Berger, Florian vom Lehn, Alessandro Parente, Heinz Pitsch

Publikováno v: Combustion and Flame. 253:112817

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3b3c8e5c70141ee519e9940bb0196428
https://doi.org/10.1016/j.combustflame.2023.112817

Low global-warming-potential refrigerant CH2F2 (R-32): Integration of a radiation heat loss correction method to accurately determine experimental flame speed metrics

Autor: Michael J. Hegetschweiler, Heinz Pitsch, Joachim Beeckmann, Gregory T. Linteris, Chaimae Bariki, Lukas Berger, Raik Hesse

Publikováno v: Proceedings of the Combustion Institute. 38:4665-4672

Due to their high global warming potential (GWP), hydrofluorocarbon refrigerants are systematically being phased out. Replacements with low GWP exist, but give rise to safety hazards as they are found to be mildly flammable. The assessment of the saf

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b3bdcb0dfe40685adf518576e6887324
https://doi.org/10.1016/j.proci.2020.05.026