FREESTREAM {STATIC | TOTAL} [CONDITIONS] M P T α β |
This keyword allows input of freestream flow conditions. The user-specified parameters are defined as:
M | Mach number | ||
---|---|---|---|
P | Static or total pressure (psi), depending on the STATIC | TOTAL keyword | ||
T | Static or total temperature (°R), depending on the STATIC | TOTAL keyword | ||
α, β | Angles of attack and sideslip (degrees) |
Note that, if U is the freestream velocity magnitude, α and β are related to the ("downstream", "up", and "sidestream") aeroaxis velocity components by:
vds = U cos β cos α |
vup = U cos β sin α |
vss = U sin β |
FREESTREAM REYNOLDS [CONDITIONS] M Re T α β |
In this alternate formulation, the freestream static pressure will be computed from the specified static temperature and Reynolds number. Re is based on the freestream velocity U and should be per unit grid length. At present, this form may only be used with perfect gases and certain viscosity models. The code will stop with an error if it is unable to proceed.
See Also: INITIALIZE, REINITIALIZE
Last updated 1 Apr 2016