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- W4379877716 abstract "A 1m long, 2.5mm nose tip radius straight cone with 300K wall temperature based on the Mach 7.4 Re=4.01e6 m^-1 case run at the DLR High Enthalpy Shock Tunnel Göttingen is considered for this analysis. The focus of this study is to apply the impedance boundary condition (IBC) with formulation utilizing the Homogeneous Absorber Theory (HAT) on to a PSE code and compare it to similar numerical computations. Specifically, a benchmark study is performed to validate the implementation of the impedance BC on the JoKHeR stability package and its ability to investigate the sensitivity of unstable modes to a scaled wall impedance. It is found that the JoKHeR implementation of the IBC predicts a factor of reduction in maximum unstable growth rate with ±25% error compared to the implementation of the IBC and DNS analysis by Sousa et al. The high sensitivity of unstable mode growth rate to changes in the specific impedance is also found, as a 25% decrease in impedance appears to yield a greater change in modal growth in comparison with a 25% increase in impedance." @default.
- W4379877716 created "2023-06-09" @default.
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- W4379877716 date "2023-06-08" @default.
- W4379877716 modified "2023-09-27" @default.
- W4379877716 title "Validation of Porous Impedance Boundary Condition for a PSE code" @default.
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- W4379877716 doi "https://doi.org/10.2514/6.2023-3290" @default.
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