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CFD中文网

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  3. Fluent多孔介质局部非热平衡问题

Fluent多孔介质局部非热平衡问题

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  • F Offline
    F Offline
    freeazma
    wrote on last edited by
    #1

    边界条件设置及温度导出

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  • F Offline
    F Offline
    freeazma
    wrote on last edited by
    #2

    各位前辈,当前我正在做一个圆管内多孔介质对流换热的模拟,打算采用Fluent中自带的non-equilibrium模型,我在多孔介质处选择了这个选项,然后自动生成了几个固相的边界条件,请问:1、怎样设置这些边界的边界条件?2、在计算完成后,怎样分别导出固体和流体的温度?谢谢各位前辈!

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  • F Offline
    F Offline
    freeazma
    wrote on last edited by
    #3

    问了一个前辈,目前得到的答案是1.按照真实的流固边界在Fluent中添加设置即可。2.可以使用其他后处理软件,选择不同的域即可分别导出流固温度

    zousiyuZ 1 Reply Last reply
  • zousiyuZ Offline
    zousiyuZ Offline
    zousiyu
    replied to freeazma on last edited by
    #4

    @freeazma 您好!我最近在做一个多孔介质局部非热平衡(LTNE)的模型。模型如下。我发现,开启 LTNE 后,多孔介质区域变成了两个,一个固体,一个液体。自由流动与多孔介质区域的交界面(红色线宽)变成了 wall,对流动不可设置,看结果这条边界应该是可渗透的,对能量默认是通量为0。感觉这里的边界条件不太合适。前辈有什么意见吗?
    7d452db1-f24f-4884-9538-c9cd49e7810b-image.png

    F 1 Reply Last reply
  • F Offline
    F Offline
    freeazma
    replied to zousiyu on last edited by
    #5

    @zousiyu 您好!个人意见,不能保证正确。先在LTE换热模型的基础上将边界条件及多孔介质区域设置好并点击确定,再重新打开多孔介质区域设置面板选择LTNE模型,给予两相对流换热参数Asf和hsf,点击确定并保证其余边界条件(包括新增的wall)不变即可。

    zousiyuZ 2 Replies Last reply
  • zousiyuZ Offline
    zousiyuZ Offline
    zousiyu
    replied to freeazma on last edited by
    #6

    @freeazma 好的,谢谢您!

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  • zousiyuZ Offline
    zousiyuZ Offline
    zousiyu
    replied to freeazma on last edited by
    #7

    @freeazma 您好!又是我,打扰了。您知道如何同时获取多孔介质区域内的固体温度和流体温度吗?
    在后处理时,在多孔介质区域仅能看到一个温度,但实际上该区域应该存在两个温度,即固体温度和流体温度。

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  • F Offline
    F Offline
    freeazma
    replied to zousiyu on last edited by
    #8

    @zousiyu 用后处理软件,CFD-Post,在workbench中有

    zousiyuZ 1 Reply Last reply
  • zousiyuZ Offline
    zousiyuZ Offline
    zousiyu
    replied to freeazma on last edited by
    #9

    @freeazma 如果我想在 fluent 里面同时查看/获取/输出固体和流体温度,能实现吗?

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