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    颗粒见黏结以及颗粒形状

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    • L
      lys last edited by

      各位老师好,关于openFoam模拟颗粒相关的问题:
      (1)open foam是否可以模拟颗粒-颗粒以及颗粒-壁面的黏结效应,颗粒在壁面的黏结系数是哪个参数?算例文档中只有颗粒与壁面的反弹与损耗系数。
      56b063f6-b965-498d-88c3-c994afafa95f-image.png
      (2)颗粒类型在哪里选择,目前至看到parcelTypeID 1,有其他形状的颗粒类型吗
      1a20bc68-357b-41bc-a2e9-081cea0d7351-image.png

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      • bestucan
        bestucan 版主 副教授 last edited by

        第一个问题,你想的问题是多相流中各项的耦合,单向耦合容易,双向耦合也实现了,你问的属于四向耦合,挺前沿。论坛里有个帖子还讨论这个来着。

        can@x260-TC ~/.local/share/OpenFOAM/OpenFOAM-8 %grep -R 'parcelTypeId' ./                                                                                                                          (git)-[master]-
        ./tutorials/lagrangian/particleFoam/mixerVesselAMI2D/constant/kinematicCloudProperties:    parcelTypeId 1;
        ./tutorials/lagrangian/DPMFoam/Goldschmidt/constant/kinematicCloudProperties:    parcelTypeId 1;
        ./tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/limestoneCloud1Properties:    parcelTypeId    2;
        

        滚来滚去……~(~o ̄▽ ̄)~o 滚来滚去都不能让大家看出来我不是老师么 O_o

        异步沟通方式(《posting style》from wiki)(下载后打开):
        https://www.jianguoyun.com/p/Dc52X2sQsLv2BRiqnKYD
        提问的智慧(github在gitee的镜像):
        https://gitee.com/bestucan/How-To-Ask-Questions-The-Smart-Way/blob/master/README-zh_CN.md

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        • zhe
          zhe last edited by

          在opemfoam中有一个内聚力,可以使粒子之间相互黏结。它是通过粒子之间的碰撞的能量转换实现的。其中通过一个叫cohesionEnergyDensity的系数来决定它的强度。这个密度越大,黏结越明显。希望我说的这个是你想问的。

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