Fully-Coupled Simulation of Low Temperature Ablator and Hypersonic Flow Solver

Zibitsker, Aleksander L.; McQuaid, Joel A.; Brehm, Christoph; Martin, Alexandre

doi:10.2514/6.2022-0676

Cited by 7 publications

(1 citation statement)

References 33 publications

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“…The MR method used inside CHAMPS was developed by Zibitzker et al [51] and coupled into CHAMPS by McQuaid et al [52][53][54][55]. It discretizes the surface geometry into individual one-dimensional rays of camphor and solves a transient heat conduction problem with a contracting grid scheme for each one.…”

Section: B Fluid-ablation Interactionmentioning

confidence: 99%

Fluid Ablation Interactions on a Compression Ramp at Mach 8

Dungan,

Baskaya,

Hickel

et al. 2024

AIAA SCITECH 2024 Forum

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Direct numerical simulations (DNS) are performed over a 15°compression ramp undergoing ablation at Mach 8 to examine fluid-ablation interactions (FAI) on transitional high-speed boundary layers. The experiments at these conditions with a rigid wall are first numerically replicated for a laminar flow. Heating streaks are introduced by introducing perturbations in the baseflow informed by prior stability calculations. The ramp is then replaced by a low-temperature ablator in our DNS and the interaction of the streaks with the recessing ablator surface are examined. Different approaches from two independently developed solvers are used to study this problem. Overall, both solvers provide qualitatively and quantitatively very similar results; however, differences in streak amplification and mass blowing magnitudes are observed. We discuss the difficulties in accurately predicting ablation and present the first findings regarding its influence on the perturbation evolution and transition to turbulence for this configuration.

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