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  3. 如何给速度分量设置边界条件?

如何给速度分量设置边界条件?

Scheduled Pinned Locked Moved OpenFOAM
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  • V Offline
    V Offline
    Vortex
    wrote on last edited by
    #1

    边界速度矢量(Ux,Uy,Uz),需要给U_z设定为 0, Ux和Uy设置为零梯度,如何设置?

    V 1 Reply Last reply
  • V Offline
    V Offline
    Vortex
    replied to Vortex on last edited by
    #2

    @Vortex 自问自答,这种情况设置为slip即可以。但其他情况可能需要自己写代码。

    1 Reply Last reply
  • C Offline
    C Offline
    cccrrryyy 超神
    wrote on last edited by cccrrryyy
    #3

    很好奇这是用在什么物理场景中,本身这里就是滑移的么?

    I don't want to survive, I want to thrive.

    V 1 Reply Last reply
  • V Offline
    V Offline
    Vortex
    replied to cccrrryyy on last edited by
    #4

    @cccrrryyy 我用在大气边界层风场模拟。速度在顶部的边界条件, z为高度方向,这时候可以设置为slip。

    S V 2 Replies Last reply
  • S Offline
    S Offline
    Samuel-Tu
    replied to Vortex on last edited by
    #5

    @Vortex 论文里一般设为symmetry

    V 1 Reply Last reply
  • V Offline
    V Offline
    veen
    replied to Vortex on last edited by
    #6

    @Vortex 之前做CASE的时候,OpenFOAM设置为symmetry有时候会不收敛,但是slip看温度场可能会出现一些问题。在商软里边一般是设置symmetry。

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  • V Offline
    V Offline
    Vortex
    replied to Samuel-Tu on last edited by
    #7

    @Samuel-Tu 好的,多谢提醒~cfdonline有这两个边界条件差异的讨论。
    https://www.cfd-online.com/Forums/openfoam-programming-development/180412-slip-symmetry-boundary-conditions.html

    1 Reply Last reply

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