1 边界条件 边界条件(boundary condition,BC)可以分为三种主要类型: Dirichlet边界:直接指定边界上待求物理变量的值 Neumann边界:指定边界上物理量的法向梯度 Robin边界:为上面两种边界的混合,既指定物理量的值,也指定梯度值 在实际应用过程中,上面三种边界类型可以任选其中一个。 在OpenFOAM中定义边界条件涉及到的操作...
7:pressureDirectedInletVelocityFvPatchVectorField:This velocity inlet boundary condition is applied to patches where the pressure is specified. The inflow velocity is obtained from the flux with the specified inlet direction" direction. 8:pressureDirectedInletOutletVelocityFvPatchVectorField:This velocity inl...
inlet pressureInletVelocity totalPressure inletOutlet outlet inletOutlet totalPressure inletOutlet wall fixedValue zeroGradient zeroGradient k Epsilon mut alpha inletOutlet inletOutlet calculated calculated inletOutlet inletOutlet calculated calculated wallFunction wallFunction wallFunction wallFunction 历经千⾟万苦终于...
Example of the boundary condition specification: <patchName> { type inletOutlet; phi phi; inletValue uniform 0; value uniform 0; } The mode of operation is determined by the sign of the flux across the patch faces. Note Sign conventions: Positive flux (out of domain): apply zero-gradient...
"pInletinlet=weightAverage(p)" "pOutlet2outlet2=p" ); } Tutorials $FOAM_TUTORIALS/compressible/rhoPimpleFoam/RAS/TJunctionAverage New scaled boundary condition wrapper This is a wrapper to add time- or space-varying scaling to any (fixed value) boundary condition without any coding. It adds...
*Q: net heat flux on the boundary [W] *Δt: time step [s] outletMappedUniformInletHeatAddition totalFlowRateAdvectiveDiffusive wallHeatTransfer compressible::thermalBaffle1D compressible::turbulentHeatFluxTemperature compressible::turbulentTemperatureCoupledBaffleMixed ...
修改边界inlet的参数: inlet { type parabolicVelocity; n (100); y (010); maxvalue2; } 修改system/controlDict文件 添加语句libs ("libparabolicVelocity.so");,如下图所示。 进行计算 blockMesh simpleFoam 计算结果 速度分布如下图所示。 入口速度分布曲线如下图所示。
OpenFOAM根据自带求解器计算自己的算例-生成网格-边界条件总结 采用OpenFOAM自带求解器计算算例 ——网格生成&边界条件自己的公众号：一介UDFer，不定期更新个人Fluent+UDF和OpenFOAM学习经验，交流学习。说明：此处的应用只限于使用OpenFOAM自带的求解器计算自己想计算的case，对求解的离散格式，求解方法，湍流模型，燃烧...
… ( boundaryField boundaryField Inlet { { { type patch; Inlet Inlet physicalType inlet; { { nFaces 100; startFace 39700; surfaceNormalFixedValue; type zeroGradient; } redValue uniform -1; } … } … ib1 … ib1 { ib1 { type indirectWall; neighbourPatch ib2; { type zeroGradient; ...
boundaryField { inlet { type fixedProfile; profile csvFile; profileCoeffs { nHeaderLine 0; refColumn 0; componentColumns (1 2 3); separator ","; mergeSeparators 0; file "Uprofile.csv"; } direction (0 1 0); origin 0; } outlet { type inletOutlet; inletValue uniform (0 0 0); value...