WALL-HEATED/COOLED EFFECTS ON LOW-FREQUENCY PRESSURE FLUCTUATIONS IN SHOCK-WAVE AND TURBULENT BOUNDARY LAYER INTERACTIONS

Ryo Hirai, Soshi Kawai

Research output: Contribution to conferencePaperpeer-review

Abstract

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.

Original languageEnglish
Publication statusPublished - 2022
Event12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022 - Osaka, Virtual, Japan
Duration: 2022 Jul 192022 Jul 22

Conference

Conference12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022
Country/TerritoryJapan
CityOsaka, Virtual
Period22/7/1922/7/22

Fingerprint

Dive into the research topics of 'WALL-HEATED/COOLED EFFECTS ON LOW-FREQUENCY PRESSURE FLUCTUATIONS IN SHOCK-WAVE AND TURBULENT BOUNDARY LAYER INTERACTIONS'. Together they form a unique fingerprint.

Cite this