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Solvers

  • Solvers are executable applications for numerical simulations of Computational Fluid Dynamics
  • Source code of solvers is located in the path of system variable $FOAM_SOLVERS
  • You can jump to the OpenFOAM solvers directory e.g using system variable
    $FOAM_SOLVERS:
    # cd $FOAM_SOLVERS
  • You can jump to the OpenFOAM solvers directory e.g using alias sol:
    # sol
    # ls -l
  • Basic types of solvers:

    basicpotential flow, Laplace and transport equations
    combustioncombustion fluid flows
    compressiblecompressible fluid flows
    discreteMethodsmolecule movement
    DNSdirect numerical simulations
    electromagneticselectrostatics, magnetohydrodynamics
    financialBlack-Scholes equation to price commodities
    heatTransferheat transfers flows
    incompressibleincompressible flows
    lagrangianLagrangian approach to CFD
    multiphasemultiphase flows
    stressAnalysisstress analysis in a solid body
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Fixed Value Velocity Family of Inlet Boundary Conditions

Fixed velocity family of inlet boundary conditions simply prescribes velocity components. Inlet data may vary either with respect to radius of inlet patch, or with respect to height of the inlet patch. Velocity components can be both of axial, radial and tangential coordinates, and also of Cartesian (xyz) coordinates.

Subsections

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TCFD® - Input geometry

This chapter mainly deals with requirements for input data and its fundamental properties which have to be satisfied to get outstanding results with TCFD\textregistered workflow. Moreover, basic terminology for input mesh data and turbomachinery simulations are introduced.
Input TCFD
Figure above shows a simplified TCFD\textregisteredworkflow. It emphasizes that input geometry preparation is a separate process from TCFD\textregistered. It has significant influence on results quality; wrong input generates wrong result. Make always sure that your input geometry, either STL files or external meshes, has the best possible quality. The main quality parameters and common errors will be presented later on in this Section. Typically, the geometry is created or modified in some CAD software. Afterwards, TCFD\textregisteredusers have two basic options:
  1. Import the CAD geometry into some meshing program and generate the computation mesh. The resulting mesh (in *.msh format) can be directly imported into TCFD\textregistered.
  2. Generate and export STL geometry from the CAD software and import the STL geometry into TCFD\textregistered.
Users can decide which approach to follow. Those who are familiar and experienced with some meshing software can follow the option 1 and those who have no preferences can choose the option 2. Both ways usually starts from the CAD geometry. The next sections bring general requirements for CAD geometries.

Subsections

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