Calculate time step based on a given CFL condition for a cube in a viscous flow simulation.
This subroutine calculates the timstep according to the CFL condition. Please notice, that this routine can be applied for flow simulations only.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| real(kind=rk), | intent(in) | :: | cfl_conv |
CFL number for the convective part |
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| real(kind=rk), | intent(in) | :: | cfl_visc |
CFL number for the viscous part |
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| real(kind=rk), | intent(in) | :: | length |
Reference length of all elements |
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| real(kind=rk), | intent(out) | :: | dt |
Resulting time step width |
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| type(atl_timestep_type), | intent(in) | :: | timestep |
Info about the timestep type |
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| integer, | intent(in) | :: | nPoly |
The number of polynomials per spatial direction |
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| real(kind=rk), | intent(in) | :: | mu |
The dynamic viscosity |
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| real(kind=rk), | intent(in) | :: | therm_cond |
The thermal conductivity |