CFD Boundary Conditions

Structure for the boundary condition tuple = ("CAPS Group Name", "Value"). "CAPS Group Name" defines the capsGroup on which the boundary condition should be applied. The "Value" can either be a JSON String dictionary (see Section JSON String Dictionary) or a single string keyword string (see Section Single Value String)

JSON String Dictionary

If "Value" is a JSON string dictionary the following keywords ( = default values) may be used:

• bcType = ""
  Boundary condition type. Options:

  • Riemann (Generic INLET/EXHAUST BC – 2004)
  • InletPressRatio
  • InletVelocity
  • PowerStag
  • PowerMFR

• totalPressure = 0.0
  Total pressure (Pt/Ptinf) for PowerStag

• totalTemperature = 0.0
  Total temperature (Tt/Ttinf) for PowerStag and PowerMFR

• staticDensity = 0.0
  Static density for Riemann

• staticPressure = 0.0
  Static pressure for Riemann, or P/P_inf for InletPressRatio

• uVelocity = 0.0
  X-velocity component for Riemann

• vVelocity = 0.0
  Y-velocity component for Riemann

• wVelocity = 0.0
  Z-velocity component for Riemann

• machNumber = 0.0
  Mach number (Vnorm/c_inf) for InletVelocity

• massflow = 0.0
  Massflow for PowerMFR