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

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

Energies, 2023, vol. 16, issue 21, 1-22

Abstract: The improved delayed detached Eddy simulation (IDDES) approach used in the part I of this investigation to study the self-ignition and combustion of hydrogen jets in a high-speed transverse flow of hot vitiated air in a duct is extended in the following directions: (i) the wall boundary conditions are modified to take into account the optical windows employed in the experiments; (ii) the detailed chemical kinetic model with 19 reactions is used; (iii) a nonlinear turbulence model is implemented in the code to capture the secondary flows in the duct corners; (iv) the wall roughness model is adapted; (v) the synthetic turbulence generator is imposed upstream of the fuel injection. As a result of improving the mathematical and physical problem statements, a good agreement between the simulation and the experimental database obtained at the LAERTE workbench (ONERA) is achieved.

Keywords: combustion; turbulence; heat exchange; transverse jet; hybrid RANS-LES method; IDDES; roughness; nonlinear turbulence model (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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