Analysis of high-speed combustion regimes of hydrogen jet in supersonic vitiated airstream

Mura, Arnaud; Techer, Anthony; Lehnasch, Guillaume

doi:10.1016/j.combustflame.2021.111552

Cited by 15 publications

(2 citation statements)

References 113 publications

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“…A possible explanation lies in the fact that colder reactants were mixed too quickly at larger length scales. Finite-rate chemistry effects and turbulence-chemistry interactions (TCI) can have a significant role in supersonic conditions, as stated by Swaminathan et al [20] and Mura et al [21], and more comprehensive kinetic mechanisms may be required. In that case, RANS simulations represent a more cost-effective alternative to LES.…”

Section: Introductionmentioning

confidence: 99%

Mixing time scale analysis of the Partially Stirred Reactor model for high-speed turbulent combustion of hydrogen in vitiated air

Piscopo,

Iavarone,

Savarese

et al. 2024

Acta Astronautica

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Section: Introductionmentioning

confidence: 99%

Mixing time scale analysis of the Partially Stirred Reactor model for high-speed turbulent combustion of hydrogen in vitiated air

Piscopo,

Iavarone,

Savarese

et al. 2024

Acta Astronautica

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“…Due to the complexity of such flow, usually the JICF and SWBL interactions are simulated separately. The transverse jet in supersonic flow has been extensively studied both experimentally [6,7] and theoretically [8][9][10][11]. The mechanism of the shock wave and vortices structures, which increases the mixing layer, has been studied from the point of view of the steady flow in ref.…”

Section: Introductionmentioning

confidence: 99%

Simulation of the shock wave boundary layer interaction in flat channel with jet injection

et al. 2023

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The improvement of the mixing of the injected jet fuel in the cross‐flow oxidant (jet in cross‐flow (JICF)) in the scramjet combustor is still remains opened problem. JICF is accompanied with the formation of shock structures and leads to the shock wave boundary layer interactions (SWBLI) at the walls of the combustion chamber. The purpose of this paper is to study the influence of the interaction of the bow shock wave with the upper boundary layer and shock wave (reflected from the upper wall) with lower surface flow behind the jet on the mixture layer mechanism. For that, the numerical simulation of a supersonic flow with a transverse multispecies jet injection from the bottom wall of the plane channel with variations of the channel heights and the jet pressure ratio is done. The multispecies supersonic gas flow in a planar channel with perpendicular jet injection is numerically simulated. The Favre‐averaged Navier‐Stokes equations coupled with the k‐ω turbulence model are solved using the fourth order weighted essentially non‐oscillatory (WENO)‐scheme. The simulation correctly captured the main flow features near the jet and the comparison with the experimental data shows a satisfactory agreement. The reflected shock wave, formed as a result of the interaction of a bow shock wave with the boundary layer (SWBLI), reaches the lower boundary layer behind the jet and interacts with them. The numerical experiments reveal show that this shock/wave interaction causes an oscillation of the flow. The channel height variations show that with a decrease of the height the mixing rate increased.

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Lift-off behaviors of the partially-premixed jet flame in a supersonic vitiated coflow

Liu

Zhang

et al. 2023

Aerospace Science and Technology

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Analysis of high-speed combustion regimes of hydrogen jet in supersonic vitiated airstream

Cited by 15 publications

References 113 publications

Mixing time scale analysis of the Partially Stirred Reactor model for high-speed turbulent combustion of hydrogen in vitiated air

Mixing time scale analysis of the Partially Stirred Reactor model for high-speed turbulent combustion of hydrogen in vitiated air

Simulation of the shock wave boundary layer interaction in flat channel with jet injection

Lift-off behaviors of the partially-premixed jet flame in a supersonic vitiated coflow

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