Wall Function Boundary Conditions Including Heat Transfer and Compressibility
Wall Function Boundary Conditions Including Heat Transfer and Compressibility
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DOI：
10.2514/1.3539
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发表时间：
2004-06
期刊：
影响因子：
2.5
通讯作者：
R. Nichols;C. Nelson
中科院分区：
文献类型：
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作者：
R. Nichols;C. Nelson
建立了考虑可压缩性和换热影响的传输型湍流模型的壁面函数边界条件。壁面函数基于粘性子层和对数层中有效的速度和温度耦合剖面。壁面函数边界条件是在一组严格的假设条件下发展的，从而得到了壁面剪应力、壁面换热和壁面第一点处的湍流量的一致关系式。新的边界条件被结合到包含Spalart-Allmaras和剪应力输运湍流模型的Navier-Stokes计算流体力学程序中。墙函数边界条件为为y+<；100的初始墙间距提供的测试用例提供了合理的工程解。
Wall function boundary conditions that include the effects of compressibility and heat transfer are developed for transport-type turbulence models. The wall functions are based on coupled velocity and temperature profiles valid in both the viscous sublayer and the log layer. The wall function boundary conditions are developed within a rigid set of assumptions so that a consistent set of relationships are derived for the wall shear stress, the wall heat transfer, and the turbulence quantities at the first point off the wall. The new boundary conditions are incorporated into a Navier‐Stokes computational fluid dynamics code that includes the Spalart‐Allmaras and shear stress transport turbulence models. The wall function boundary conditions produce reasonable engineering solutions for the test cases presented for initial wall spacings of y + < 100.