CFD Online - Y-Plus Wall Distance Estimation (cfd-online.com) cfd-online.com/Tools/yp 图6:壁面函数及其限制在上述边界层分离的情况下,不应使用壁函数,因为基于对数的壁函数不能正确预测剖面。 为了得到准确的结果,应该直接解析粘性底层。强化壁面处理方案结合了壁面混合定律和两层分区模型
Y+ Wall Distance Estimation Input Freestream velocity:[m/s] Density:[kg/m3] Dynamic viscosity:[kg/ms] Boundary layer length:[m] Desired Y+ value:[] Output Reynolds number:[] Estimated wall distance:[m]
CFD Online网站中关于y+的定义如下:A non-dimensional wall distance for a wall-bounded flow can be...
Re: Yplus Hi mefpz, If you are using the default k-epsilon turbulence model with default wall functions there is no reasonable range, it can handle pretty much any range of y+, so related issues such as mesh independance become the issue instead. If you change the default wall functions...
(1)pointwise的y+计算工具网址为http://www.pointwise.com/yplus/,打开后如下图所示,输入速度、密度、粘度、特征尺寸以及Y+,网页会计算出第一层网格高度与雷诺数。 (2)CFD-Online的计算工具网址为http://www.cfd-online.com/Tools/yplus.php,打开后如下图所示。
cfd-online 这个网站是流体力学与计算流体力学领域内的知名平台,提供多种CFD相关软件的讨论区。用户不仅可以在这里交流关于CFD软件的应用、技巧和最新发展,还可以探讨有关求解yplus等流体力学问题的方法和经验。无论是初学者还是专业人士,都能在这里找到有价值的信息和资源。流体中文网 作为中文世界的流体...
Now insert everything into formula(7)with your wantedy^+and you are finished! Alternatively use ay^+calculator:CFD Online - Y-Plus Wall Distance Estimation A list of skin friction coefficients can be found here:Skin friction coefficient -- CFD-Wiki, the free CFD reference ...
14、 生成附面层网格时,第一层网格的高度需要利用(https://geolab.larc.nasa.gov/APPS/YPlus/)网站进行计算。 15、 如果在拓扑时出现黄色线段,建议勾选single curve cleanup选项。或者可以利用修建功能进行模型修正,可以参考这个文档进行:https://wenku.baidu.com/view/f1f24d6f4431b90d6d85c762.html。
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