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    槽道流使用fluent数值模拟入口边界条件设置

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    • 楼
      楼道男孩 last edited by

      槽道流使用fluent数值模拟,2d模型,基于标准k-ε湍流模型,考虑使用增强壁面函数,选择速度边界条件,想咨询一下各位大神,速度入口边界条件这里对应的湍流强度和长度尺度应该怎么设置?使用增强壁面函数对应处理近壁面,这里选择是否合理呢,对于槽道流,壁面函数这样选择是否合理?
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      4aef2905-984f-4096-9e39-b54f373fc0dd-image.png

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      • V
        veen last edited by

        来源:fluent help
        Turbulence Intensity
        $$
        I \equiv \frac{u^{\prime}}{u_{a v g}}=0.16\left(R e_{D_{H}}\right)^{-1 / 8}
        $$

        Turbulence Length Scale
        $$
        \ell=\frac{0.07 L}{C_{\mu}^{3 / 4}}
        $$

        Turbulent Kinetic Energy
        $$
        k=\frac{3}{2}\left(u_{a v g} I\right)^{2}
        $$

        Turbulent Dissipation Rate
        $$
        \varepsilon=\frac{k^{3 / 2}}{l}
        $$

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        • 楼
          楼道男孩 @veen last edited by

          @veen 谢谢,我学习一下

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