[Oral Presentation]Skin-friction drag reduction effect of turbulent channel flow by periodically varying wall temperature

Skin-friction drag reduction effect of turbulent channel flow by periodically varying wall temperature

ID：213 Submission ID：32 View Protection：ATTENDEE Updated Time：2025-09-30 10:41:14 Hits：92 Oral Presentation

Start Time：2025-10-11 09:10 （Asia/Shanghai）

Duration：15min

Session：[S9] Turbulence » [S9] Session 9

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Abstract

A study of skin-friction drag reduction in a turbulent channel flow is conducted using direct numerical simulations, Periodic variations in wall temperature induce bouyancy forces and spanwise velocity oscillations. This control strategy achieves a maximum drag reduction of 43.3%.

Keywords

Direct numerical simulation,Turbulent channel flow,Drag reduction effect

Speaker

Satsuki Aoyama

The University of Electro-Communications, Japan

Submission Author

Satsuki Aoyama The University of Electro-Communications

Hiroya Mamori The University of Electro-Communications

Menglei Wang The University of Electro Communications

Takeshi Miyazaki The University of Electro-Communications