TY - GEN
T1 - DNS analysis of wall heat flux effects on shock wave and turbulent boundary layer interactions
AU - Hirai, Ryo
AU - Kawai, Soshi
N1 - Funding Information:
This work was supported in part by Japan Society for the Promotion of Science Grant-in-Aid for Scientific Research (B) KAKENHI 21H01523. A part of this research used computational resources of the Fugaku computer provided by the RIKEN Advanced Institute for Computational Science. (Project ID: hp210099).
Publisher Copyright:
© 2022, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2022
Y1 - 2022
N2 - We present direct numerical simulations (DNS) of oblique shock wave and turbulent boundary layer interactions on a flat plate with wall heat flux to investigate the effects of wall heating and cooling on the wall pressure fluctuations. The wall pressure spectra are investigated by decomposing into the components of the pressure evolution equation to understand the effects of wall heat flux and shock-induced flow dynamics on the wall pressure fluctuations. The results indicate that the low-frequency wall pressure fluctuations are associated with the reflected shock, and the induced velocity-dilatation and pressure-gradient dominantly affect the low-frequency spectral components of the wall pressure. However, the viscosity and wall heat flux hardly affect in the adiabatic case. On the other hand, for the heated and cooled wall cases, some contributions of the viscosity and wall heat flux to the low-frequency wall pressure fluctuations are observed in the interaction regions.
AB - We present direct numerical simulations (DNS) of oblique shock wave and turbulent boundary layer interactions on a flat plate with wall heat flux to investigate the effects of wall heating and cooling on the wall pressure fluctuations. The wall pressure spectra are investigated by decomposing into the components of the pressure evolution equation to understand the effects of wall heat flux and shock-induced flow dynamics on the wall pressure fluctuations. The results indicate that the low-frequency wall pressure fluctuations are associated with the reflected shock, and the induced velocity-dilatation and pressure-gradient dominantly affect the low-frequency spectral components of the wall pressure. However, the viscosity and wall heat flux hardly affect in the adiabatic case. On the other hand, for the heated and cooled wall cases, some contributions of the viscosity and wall heat flux to the low-frequency wall pressure fluctuations are observed in the interaction regions.
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U2 - 10.2514/6.2022-0478
DO - 10.2514/6.2022-0478
M3 - Conference contribution
AN - SCOPUS:85122956618
SN - 9781624106316
T3 - AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022
BT - AIAA SciTech Forum 2022
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022
Y2 - 3 January 2022 through 7 January 2022
ER -