flowRateInletVelocityFvPatchVectorField: Added optional profile entry to specify the velocity profile

The unreliable extrapolateProfile option has been replaced by the more flexible and reliable profile option which allows the velocity profile to be specified as a Function1 of the normalised distance to the wall. To simplify the specification of the most common velocity profiles the new laminarBL (quadratic profile) and turbulentBL (1/7th power law) Function1s are provided. In addition to the new profile option the flow rate can now be specified as a meanVelocity, volumetricFlowRate or massFlowRate, all of which are Function1s of time. The following tutorials have been updated to use the laminarBL profile: multiphase/multiphaseEulerFoam/laminar/titaniaSynthesis multiphase/multiphaseEulerFoam/laminar/titaniaSynthesisSurface The following tutorials have been updated to use the turbulentBL profile: combustion/reactingFoam/Lagrangian/verticalChannel combustion/reactingFoam/Lagrangian/verticalChannelLTS combustion/reactingFoam/Lagrangian/verticalChannelSteady compressible/rhoPimpleFoam/RAS/angledDuct compressible/rhoPimpleFoam/RAS/angledDuctLTS compressible/rhoPimpleFoam/RAS/squareBendLiq compressible/rhoPorousSimpleFoam/angledDuctImplicit compressible/rhoSimpleFoam/angledDuctExplicitFixedCoeff compressible/rhoSimpleFoam/squareBend compressible/rhoSimpleFoam/squareBendLiq heatTransfer/chtMultiRegionFoam/shellAndTubeHeatExchanger heatTransfer/chtMultiRegionFoam/shellAndTubeHeatExchanger incompressible/porousSimpleFoam/angledDuctImplicit incompressible/porousSimpleFoam/straightDuctImplicit multiphase/interFoam/RAS/angledDuct Class Foam::flowRateInletVelocityFvPatchVectorField Description Velocity inlet boundary condition creating a velocity field with optionally specified profile normal to the patch adjusted to match the specified mass flow rate, volumetric flow rate or mean velocity. For a mass-based flux: - the flow rate should be provided in kg/s - if \c rho is "none" the flow rate is in m3/s - otherwise \c rho should correspond to the name of the density field - if the density field cannot be found in the database, the user must specify the inlet density using the \c rhoInlet entry For a volumetric-based flux: - the flow rate is in m3/s Usage \table Property | Description | Required | Default value massFlowRate | Mass flow rate [kg/s] | no | volumetricFlowRate | Volumetric flow rate [m^3/s]| no | meanVelocity | Mean velocity [m/s]| no | profile | Velocity profile | no | rho | Density field name | no | rho rhoInlet | Inlet density | no | alpha | Volume fraction field name | no | \endtable Example of the boundary condition specification for a volumetric flow rate: \verbatim <patchName> { type flowRateInletVelocity; volumetricFlowRate 0.2; profile laminarBL; } \endverbatim Example of the boundary condition specification for a mass flow rate: \verbatim <patchName> { type flowRateInletVelocity; massFlowRate 0.2; profile turbulentBL; rho rho; rhoInlet 1.0; } \endverbatim Example of the boundary condition specification for a volumetric flow rate: \verbatim <patchName> { type flowRateInletVelocity; meanVelocity 5; profile turbulentBL; } \endverbatim The \c volumetricFlowRate, \c massFlowRate or \c meanVelocity entries are \c Function1 of time, see Foam::Function1s. The \c profile entry is a \c Function1 of the normalised distance to the wall. Any suitable Foam::Function1s can be used including Foam::Function1s::codedFunction1 but Foam::Function1s::laminarBL and Foam::Function1s::turbulentBL have been created specifically for this purpose and are likely to be appropriate for most cases. Note - \c rhoInlet is required for the case of a mass flow rate, where the density field is not available at start-up - The value is positive into the domain (as an inlet) - May not work correctly for transonic inlets - Strange behaviour with potentialFoam since the U equation is not solved See also Foam::fixedValueFvPatchField Foam::Function1s::laminarBL Foam::Function1s::turbulentBL Foam::Function1s Foam::flowRateOutletVelocityFvPatchVectorField
2022-01-24 19:10:39 +00:00
parent db45df2e6e
commit 8bb48df87f
35 changed files with 761 additions and 132 deletions
--- a/tutorials/combustion/reactingFoam/Lagrangian/verticalChannel/0/U.orig
+++ b/tutorials/combustion/reactingFoam/Lagrangian/verticalChannel/0/U.orig
@ -33,12 +33,14 @@ boundaryField
        type            flowRateInletVelocity;
        massFlowRate    constant 0.00379;
        rhoInlet        1.0;    // fallback value for e.g. potentialFoam
+        profile         turbulentBL;
    }
    inletSides
    {
        type            flowRateInletVelocity;
        massFlowRate  constant 0.00832;
        rhoInlet        1.0;    // fallback value for e.g. potentialFoam
+        profile         turbulentBL;
    }
    outlet
    {
--- a/tutorials/combustion/reactingFoam/Lagrangian/verticalChannel/0/k
+++ b/tutorials/combustion/reactingFoam/Lagrangian/verticalChannel/0/k
@ -31,13 +31,13 @@ boundaryField
    inletCentral
    {
        type            turbulentIntensityKineticEnergyInlet;
-        intensity       0.15;
+        intensity       0.05;
        value           uniform 3.75e-9;
    }
    inletSides
    {
        type            turbulentIntensityKineticEnergyInlet;
-        intensity       0.16;
+        intensity       0.05;
        value           uniform 3.75e-9;
    }
    outlet
--- a/tutorials/combustion/reactingFoam/Lagrangian/verticalChannelLTS/0/U.orig
+++ b/tutorials/combustion/reactingFoam/Lagrangian/verticalChannelLTS/0/U.orig
@ -33,12 +33,14 @@ boundaryField
        type            flowRateInletVelocity;
        massFlowRate    constant 0.00379;
        rhoInlet        1.0;    // fallback value for e.g. potentialFoam
+        profile         turbulentBL;
    }
    inletSides
    {
        type            flowRateInletVelocity;
        massFlowRate  constant 0.00832;
        rhoInlet        1.0;    // fallback value for e.g. potentialFoam
+        profile         turbulentBL;
    }
    outlet
    {
--- a/tutorials/combustion/reactingFoam/Lagrangian/verticalChannelLTS/0/k
+++ b/tutorials/combustion/reactingFoam/Lagrangian/verticalChannelLTS/0/k
@ -31,13 +31,13 @@ boundaryField
    inletCentral
    {
        type            turbulentIntensityKineticEnergyInlet;
-        intensity       0.15;
+        intensity       0.05;
        value           uniform 3.75e-9;
    }
    inletSides
    {
        type            turbulentIntensityKineticEnergyInlet;
-        intensity       0.16;
+        intensity       0.05;
        value           uniform 3.75e-9;
    }
    outlet
--- a/tutorials/combustion/reactingFoam/Lagrangian/verticalChannelSteady/0/U.orig
+++ b/tutorials/combustion/reactingFoam/Lagrangian/verticalChannelSteady/0/U.orig
@ -33,6 +33,7 @@ boundaryField
        type            flowRateInletVelocity;
        rhoInlet        1.2;
        massFlowRate    constant 0.00379;
+        profile         turbulentBL;
        value           uniform (0 14.68 0);
    }
    inletSides
@ -40,6 +41,7 @@ boundaryField
        type            flowRateInletVelocity;
        rhoInlet        1.2;
        massFlowRate    constant 0.00832;
+        profile         turbulentBL;
        value           uniform (0 17.79 0);
    }
    outlet
--- a/tutorials/combustion/reactingFoam/Lagrangian/verticalChannelSteady/0/k
+++ b/tutorials/combustion/reactingFoam/Lagrangian/verticalChannelSteady/0/k
@ -31,13 +31,13 @@ boundaryField
    inletCentral
    {
        type            turbulentIntensityKineticEnergyInlet;
-        intensity       0.15;
+        intensity       0.05;
        value           uniform 3.75e-9;
    }
    inletSides
    {
        type            turbulentIntensityKineticEnergyInlet;
-        intensity       0.16;
+        intensity       0.05;
        value           uniform 3.75e-9;
    }
    outlet
--- a/tutorials/compressible/rhoPimpleFoam/RAS/angledDuct/0/U
+++ b/tutorials/compressible/rhoPimpleFoam/RAS/angledDuct/0/U
@ -34,6 +34,7 @@ boundaryField
    {
        type            flowRateInletVelocity;
        massFlowRate    constant 0.1;
+        profile         turbulentBL;
        rhoInlet        1;          // estimate for initial rho
    }

--- a/tutorials/compressible/rhoPimpleFoam/RAS/angledDuctLTS/0/U
+++ b/tutorials/compressible/rhoPimpleFoam/RAS/angledDuctLTS/0/U
@ -34,6 +34,7 @@ boundaryField
    {
        type            flowRateInletVelocity;
        massFlowRate    constant 0.1;
+        profile         turbulentBL;
        value           uniform (0 0 0);
    }

--- a/tutorials/compressible/rhoPimpleFoam/RAS/squareBendLiq/0/U
+++ b/tutorials/compressible/rhoPimpleFoam/RAS/squareBendLiq/0/U
@ -29,6 +29,7 @@ boundaryField
        type            flowRateInletVelocity;
        massFlowRate    constant 5;
        rhoInlet        1000;    // Guess for rho
+        profile         turbulentBL;
    }

    outlet
--- a/tutorials/compressible/rhoPimpleFoam/RAS/squareBendLiq/system/fvSchemes
+++ b/tutorials/compressible/rhoPimpleFoam/RAS/squareBendLiq/system/fvSchemes
@ -30,7 +30,7 @@ divSchemes
 {
    default             none;

-    div(phi,U)          Gauss linearUpwind limited;
+    div(phi,U)          Gauss linearUpwindV limited;
    div(phi,e)          Gauss linearUpwind limited;
    div(phi,epsilon)    Gauss linearUpwind limited;
    div(phi,k)          Gauss linearUpwind limited;
--- a/tutorials/compressible/rhoPorousSimpleFoam/angledDuctImplicit/0/U
+++ b/tutorials/compressible/rhoPorousSimpleFoam/angledDuctImplicit/0/U
@ -34,6 +34,7 @@ boundaryField
    {
        type            flowRateInletVelocity;
        massFlowRate    constant 0.1;
+        profile         turbulentBL;
        value           uniform (0 0 0);
    }

--- a/tutorials/compressible/rhoSimpleFoam/angledDuctExplicitFixedCoeff/0/U
+++ b/tutorials/compressible/rhoSimpleFoam/angledDuctExplicitFixedCoeff/0/U
@ -34,6 +34,7 @@ boundaryField
    {
        type            flowRateInletVelocity;
        massFlowRate    constant 0.1;
+        profile         turbulentBL;
        value           uniform (0 0 0);
    }

--- a/tutorials/compressible/rhoSimpleFoam/squareBend/0/U
+++ b/tutorials/compressible/rhoSimpleFoam/squareBend/0/U
@ -28,6 +28,7 @@ boundaryField
        type            flowRateInletVelocity;
        massFlowRate    constant 0.5;
        rhoInlet        0.5;    // Guess for rho
+        profile         turbulentBL;
    }
    outlet
    {
--- a/tutorials/compressible/rhoSimpleFoam/squareBendLiq/0/U
+++ b/tutorials/compressible/rhoSimpleFoam/squareBendLiq/0/U
@ -28,6 +28,7 @@ boundaryField
        type            flowRateInletVelocity;
        massFlowRate    constant 5;
        rhoInlet        1000;    // Guess for rho
+        profile         turbulentBL;
    }
    outlet
    {
--- a/tutorials/compressible/rhoSimpleFoam/squareBendLiq/system/fvSchemes
+++ b/tutorials/compressible/rhoSimpleFoam/squareBendLiq/system/fvSchemes
@ -30,7 +30,7 @@ divSchemes
 {
    default             none;

-    div(phi,U)          bounded Gauss linearUpwind limited;
+    div(phi,U)          bounded Gauss linearUpwindV limited;
    div(phi,h)          bounded Gauss linearUpwind limited;
    div(phi,e)          bounded Gauss linearUpwind limited;
    div(phi,epsilon)    bounded Gauss linearUpwind limited;
--- a/tutorials/heatTransfer/chtMultiRegionFoam/shellAndTubeHeatExchanger/0/shell/U
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/shellAndTubeHeatExchanger/0/shell/U
@ -31,6 +31,7 @@ boundaryField
    {
        type            flowRateInletVelocity;
        massFlowRate    constant 0.05;
+        profile         turbulentBL;
        value           $internalField;
    }
    wall
--- a/tutorials/heatTransfer/chtMultiRegionFoam/shellAndTubeHeatExchanger/0/tube/U
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/shellAndTubeHeatExchanger/0/tube/U
@ -26,6 +26,7 @@ boundaryField
    {
        type            flowRateInletVelocity;
        massFlowRate    constant 0.05;
+        profile         turbulentBL;
        value           $internalField;
    }
    upper
--- a/tutorials/incompressible/porousSimpleFoam/angledDuctImplicit/0/U
+++ b/tutorials/incompressible/porousSimpleFoam/angledDuctImplicit/0/U
@ -34,6 +34,7 @@ boundaryField
    {
        type            flowRateInletVelocity;
        volumetricFlowRate  constant 0.1;
+        profile         turbulentBL;
    }

    outlet
--- a/tutorials/incompressible/porousSimpleFoam/straightDuctImplicit/0/U
+++ b/tutorials/incompressible/porousSimpleFoam/straightDuctImplicit/0/U
@ -40,7 +40,7 @@ boundaryField
    {
        type            flowRateInletVelocity;
        volumetricFlowRate  constant 0.1;
-//        value           uniform (0.1 0 0);
+        profile         turbulentBL;
    }
    outlet
    {
--- a/tutorials/multiphase/interFoam/RAS/angledDuct/0/U
+++ b/tutorials/multiphase/interFoam/RAS/angledDuct/0/U
@ -34,6 +34,7 @@ boundaryField
    {
        type            flowRateInletVelocity;
        massFlowRate    constant 0.1;
+        profile         turbulentBL;
        value           uniform (0 0 0);
    }

--- a/tutorials/multiphase/multiphaseEulerFoam/laminar/titaniaSynthesis/0/U.vapor
+++ b/tutorials/multiphase/multiphaseEulerFoam/laminar/titaniaSynthesis/0/U.vapor
@ -24,8 +24,9 @@ boundaryField
    inlet
    {
        type            flowRateInletVelocity;
-        massFlowRate    2.173893E-07;
+        massFlowRate    2.173893e-07;
        rho             thermo:rho.vapor;
+        profile         laminarBL;
        value           $internalField;
    }

--- a/tutorials/multiphase/multiphaseEulerFoam/laminar/titaniaSynthesisSurface/0/U.vapor
+++ b/tutorials/multiphase/multiphaseEulerFoam/laminar/titaniaSynthesisSurface/0/U.vapor
@ -24,8 +24,9 @@ boundaryField
    inlet
    {
        type            flowRateInletVelocity;
-        massFlowRate    2.173893E-07;
+        massFlowRate    2.173893e-07;
        rho             thermo:rho.vapor;
+        profile         laminarBL;
        value           $internalField;
    }

--- a/tutorials/resources/blockMesh/angledDuct
+++ b/tutorials/resources/blockMesh/angledDuct
@ -58,8 +58,8 @@ vertices #codeStream
        points = transform(Rz(degToRad($angle)), points);

        // Append points 6 and 7
-        points.append(points[0] - point($lenInlet, 0, 0));  // pt 6
-        points.append(points[3] - point($lenInlet, 0, 0));  // pt 7
+        points.append(point(-$lenInlet, points[0].y(), points[0].z()));  // pt 6
+        points.append(point(-$lenInlet, points[3].y(), points[3].z()));  // pt 7

        // Duplicate z points
        points.append(cmptMultiply(points, vector(1, 1, -1)));