ON THE ORIGIN OF TURBULENT SECONDARY FLOW IN A STRAIGHT DUCT OF NON-CIRCULAR CROSS-SECTION

被引：0
作者：
Zhao Lie Wang Fa-min Bian Yun-gui Yu Xin Institute of Mechanics
机构：
来源：
Journal of Hydrodynamics(SerB). | 1993年 / 03期
关键词：
secondary flow; turbulence model; vortex-vector potential equation;
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摘要：
The origin of turbulent secondary flow in a straight duct of non-circular cross-section is discussed from a theoretical standpoint and examined from a numerical simulation ofthe turbulent flow in a square duct,It is reached that the driving force of such secondary flowcomes from the second-order terms of the difference in gradients of normal and transverseReynolds stresses in the axial vorticity equation.The present results obtained compare well withavailable experimental results for both primary and secondary flow quantities.
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页码：98 / 111
页数：14
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