1. Improved Delayed Detached Eddy Simulation of Combustion of Hydrogen Jets in a High-Speed Confined Hot Air Cross Flow II: New Results.
- Author
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Bakhne, Sergei, Vlasenko, Vladimir, Troshin, Alexei, Sabelnikov, Vladimir, and Savelyev, Andrey
- Subjects
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AIR flow , *COMBUSTION , *EDDIES , *AIR ducts , *CHEMICAL models , *PLASMA turbulence , *COUNTERFLOWS (Fluid dynamics) - 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. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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