bubbleColumn 解析

OpenFOAM
,
1

OS: CentOS 7
OpenFOAM version: v1812
Solver: reactingTwophaseEulerFoam
case: tutorials/multiphase/reactingTwoPhaseEulerFoam/RAS/bubbleColumn

以下文件：constant/phaseProperties

type    heatAndMomentumTransferTwoPhaseSystem;  // 类型为传热传质两相流

// 各相的名称，与后面的对应, 第 1 个 (air) 为分散相
phases (air water);  

air                                             // air 的性质
{
    type            purePhaseModel;             // 
    diameterModel   isothermal;                 // 等温的分散相粒径模型
    isothermalCoeffs                            // 系数
    {
        d0              3e-3;                   // 初始直径
        p0              1e5;                    // 参考压力
    }

    residualAlpha   1e-6;                       // 相分数残差控制
}

water                                           // water 的性质
{
    type            purePhaseModel;
    diameterModel   constant;
    constantCoeffs
    {
        d               1e-4;
    }

    residualAlpha   1e-6;
}

/* 针对每个网格，确定为连续相，还是离散相。
   minPartlyContinuousAlpha.air 为视为离散相的气相最小体积分数，
   minFullyContinuousAlpha.air 为视为连续相的气相最小体积分数。 */
blending                                        // 混合
{
    default
    {
        type            linear;                 // 类型为线性
        minFullyContinuousAlpha.air 0.7;        // 最小全连续相分数 air
        minPartlyContinuousAlpha.air 0.5;       // 最小部分连续相分数 air
        minFullyContinuousAlpha.water 0.7;
        minPartlyContinuousAlpha.water 0.5;
    }
}

surfaceTension                                  // 表面张力
(
    (air and water)
    {
        type            constant;
        sigma           0.07;
    }
);

aspectRatio                                     // 分散相在连续相中的形状因子
(
    (air in water)
    {
        type            constant;
        E0              1.0;                    // Eotvos 数
    }

    (water in air)
    {
        type            constant;
        E0              1.0;
    }
);

drag                                            // 阻力
(
    (air in water)                          // air 为离散相
    {
        type            SchillerNaumann;        // 模型为 SchillerNaumann
        residualRe      1e-3;
        swarmCorrection
        {
            type        none;
        }
    }

    (water in air)
    {
        type            SchillerNaumann;
        residualRe      1e-3;
        swarmCorrection
        {
            type        none;
        }
    }

    (air and water)
    {
        type            segregated;             // 模型为 segregated
        m               0.5;
        n               8;
        swarmCorrection
        {
            type        none;
        }
    }
);

virtualMass                                     // 附加质量
(
    (air in water)
    {
        type            constantCoefficient;
        Cvm             0.5;
    }

    (water in air)
    {
        type            constantCoefficient;
        Cvm             0.5;
    }
);

heatTransfer                                    // 传热
(
    (air in water)                              // 空气在水中
    {
        type            RanzMarshall;           // 模型为 RanzMarshall
        residualAlpha   1e-4;
    }

    (water in air)                                   // 水在空气中
    {
        type            RanzMarshall;
        residualAlpha   1e-4;
    }
);

lift
(
);

wallLubrication
(
);

turbulentDispersion
(
);

// Minimum allowable pressure        最小允许压力
pMin            10000;

diameterModel 见 Euler 两相流中的 diameterModel