TY - CONF
T1 - WALL-HEATED/COOLED EFFECTS ON LOW-FREQUENCY PRESSURE FLUCTUATIONS IN 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 and hp220034).
Publisher Copyright:
© 2022 12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022. All rights reserved.
PY - 2022
Y1 - 2022
N2 - Direct numerical simulations of shock-wave and turbulent boundary layer interactions with wall heat flux are performed to investigate wall heat flux effects on low-frequency dynamics of shock interacted flows. We compare three wall temperature cases of quasi-adiabatic, heated, and cooled conditions under the freestream Mach number M∞ = 2.28 and Reynolds number Reθ ≈ 5,000. The results focusing on low-frequency dynamics of flow and pressure fields suggest that boundary layer separations and reflected shock are associated with low-frequency wall pressure fluctuations. Also, high-frequency wall pressure fluctuations originate from turbulent structures at separated shear layers and attached boundary layers. The results and discussion suggest that wall temperature effects on pressure gradients of reflected shock and the semi-local Reynolds number can change the low- and high-frequency wall pressure fluctuations, respectively.
AB - Direct numerical simulations of shock-wave and turbulent boundary layer interactions with wall heat flux are performed to investigate wall heat flux effects on low-frequency dynamics of shock interacted flows. We compare three wall temperature cases of quasi-adiabatic, heated, and cooled conditions under the freestream Mach number M∞ = 2.28 and Reynolds number Reθ ≈ 5,000. The results focusing on low-frequency dynamics of flow and pressure fields suggest that boundary layer separations and reflected shock are associated with low-frequency wall pressure fluctuations. Also, high-frequency wall pressure fluctuations originate from turbulent structures at separated shear layers and attached boundary layers. The results and discussion suggest that wall temperature effects on pressure gradients of reflected shock and the semi-local Reynolds number can change the low- and high-frequency wall pressure fluctuations, respectively.
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M3 - Paper
AN - SCOPUS:85143764188
T2 - 12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022
Y2 - 19 July 2022 through 22 July 2022
ER -