Initialization : compressible flow

D 3 septembre 2009

Initial conditions for compressible flow solver is defined in BLOCK:INIT section. One can use

the solution is the CGNS mesh file with TYPE=CGNS
the solution is TYPHON internal format with TYPE=TYPHON or TYPE=TYS
or user-defined fields (default) with TYPE=DEFINITION where symbolic functions of X,Y,Z can be used.

Example (Lamb vortex definition) :

BLOCK:INIT

  P        = 1.E5 - 1.161*900/2*exp(1-(X*X+Y*Y)/4)

  TI       = 300

  VX    = 20-30*Y/2*exp(0.5*(1-(X*X+Y*Y)/4))

  VY    =    30*X/2*exp(0.5*(1-(X*X+Y*Y)/4))

  VZ    = 0.

ENDBLOCK

Combinations of quantities could be

static or stagnation pressure P, PI
density, static or stagnation temperature DENSITY, T, TI
velocity as
- components VX, VY, VZ
- Velocity magnitude and direction VELOCITY, DIRECTION
- Mach magnitude and direction MACH, DIRECTION

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Initialization : compressible flow

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Moving Reference Frame

Boundary conditions : compressible flow

Mesh import

Probes

Boundary conditions : periodicity

Outputs