Improved Delayed Detached Eddy Simulation of Combustion of Hydrogen Jets in a High-Speed Confined Hot Air Cross Flow

Sergei Bakhne (), Alexei Troshin, Vladimir Sabelnikov () and Vladimir Vlasenko
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Sergei Bakhne: Central Aerohydrodynamic Institute (TsAGI), 140180 Zhukovsky, Russia
Alexei Troshin: Central Aerohydrodynamic Institute (TsAGI), 140180 Zhukovsky, Russia
Vladimir Sabelnikov: Central Aerohydrodynamic Institute (TsAGI), 140180 Zhukovsky, Russia
Vladimir Vlasenko: Central Aerohydrodynamic Institute (TsAGI), 140180 Zhukovsky, Russia

Energies, 2023, vol. 16, issue 4, 1-22

Abstract: The paper deals with the self-ignition and combustion of hydrogen jets in a high-speed transverse flow of hot vitiated air in a duct. The Improved Delayed Detached Eddy Simulation (IDDES) approach based on the Shear Stress Transport (SST) model is used, which in this paper is applied to a turbulent reacting flow with finite rate chemical reactions. An original Adaptive Implicit Scheme for unsteady simulations of turbulent flows with combustion, which was successfully used in IDDES simulation, is described. The simulation results are compared with the experimental database obtained at the LAERTE experimental workbench of the ONERA—The French Aerospace Laboratory. Comparison of IDDES with experimental results shows a strong sensitivity of the simulation results to the surface roughness and temperature of the duct walls. The results of IDDES modeling are in good agreement with experimental pressure distributions along the wall and with the results of videoregistration of the excited radical chemiluminescence.

Keywords: combustion; turbulence; heat exchange; transverse jet; hybrid RANS-LES method; IDDES; validation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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