Numerical investigation of turbulent channel flow controlled by spatially oscillating spanwise Lorentz force

Wentang WU; Yanji HONG; Baochun FAN

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Numerical investigation of turbulent channel flow controlled by spatially oscillating spanwise Lorentz force

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A formulation of the skin-friction drag related to the Reynolds shear stress in a turbulent channel flow is derived. A direct numerical simulation(DNS) of the turbulent control is performed by imposing the spatially oscillating spanwise Lorentz force. Under the action of the Lorentz force with several proper control parameters, only the periodically well-organized streamwise vortices are finally observed in the near-wall region. The Reynolds shear stress decreases dramatically, especially in the near-wall area, resulting in a drag reduction.

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《应用数学和力学：英文版》 |2015年第9期|1113-1120|共8页
作者
Wentang WU; Yanji HONG; Baochun FAN;
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作者单位

National Key Laboratory of Laser Propulsion and Application;

Academy of Equipment;

National Key Laboratory of Transient Physics;

Nanjing University of Science and Technology;

National Key Laboratory of Explosion Science and Technology;

Beijing Institute of Technology;

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原文格式 PDF
正文语种 chi
中图分类湍流（紊流）;
关键词
turbulent channel flow; direct numerical simulation(DNS); drag reduction; Lorentz force;

Numerical investigation of turbulent channel flow controlled by spatially oscillating spanwise Lorentz force

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