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  3. Fluent 流体域中模型细缝怎么处理?

Fluent 流体域中模型细缝怎么处理?

Scheduled Pinned Locked Moved Fluent
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  • W Offline
    W Offline
    wseric
    wrote on last edited by
    #1

    最近在做一个流体域细缝大小的仿真,细缝缩小到50um的时候,液体流体域的压力分布异常了。
    这么小的缝隙应该是用不了壁面函数了吧?

    1 Reply Last reply
  • 西湖冷月西 Offline
    西湖冷月西 Offline
    西湖冷月
    wrote on last edited by
    #2

    尺度太小的话,连续介质假设还成不成立?还能不能用有限体积法求解呢?

    努力守恒。

    W 1 Reply Last reply
  • W Offline
    W Offline
    wseric
    replied to 西湖冷月 on last edited by
    #3

    @西湖冷月 液体的,50um的间隙,根据克努森数应该还成立,感觉是壁面函数不好用了。

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  • C Offline
    C Offline
    cccrrryyy 超神
    wrote on last edited by
    #4

    壁面函数是只有湍流才要用的吧,这么小的尺寸会不会就是个层流?

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

    1 Reply Last reply
  • W Offline
    W Offline
    wseric
    wrote on last edited by
    #5

    @cccrrryyy 有可能, 但是确定流体域中大部分为湍流,只有细缝附近不是很确定,这种在Fluent里面如果一部分为层流一部分为湍流,感觉就不怎么好处理了。

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