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    drag force in dragModel.C

    OpenFOAM
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    • K
      kimy 最后由 编辑

      Hi, everyone. I am confused that the expression of drag force used in Openfoam, as shown in the following codes. Why there is nu and divided by square of particle diameter. I saw the formula is without nu and only divided by diameter in some literature. Do you have any tip for me? Thanks a lot. By the way, After I deleted pair_.continuous().nu() and only divided by diameter. The results I obtained are totally the same.

      Foam::tmp<Foam::volScalarField> Foam::dragModel::Ki() const
      {
          return
              0.75
             *CdRe()
             *swarmCorrection_->Cs()
             *pair_.continuous().rho()
             *pair_.continuous().nu()
             /sqr(pair_.dispersed().d());
      }
      
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      • 李东岳
        李东岳 管理员 最后由 编辑

        75最前面

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        • K
          kimy 最后由 编辑

          Thanks a lot, Dongyue. Very helpful. I found in SN model CdRe was multiplied by another Re. Thus, the formula is consistent.

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