Calculate time step based on a given CFL number of cubes in a Nernst-Planck simulation.
This subroutine calculates the time step with respect to a given cfl number for simulations of Nernst-Planck equations. Please notice that this routine assumes constant material parameters.
Type | Intent | Optional | Attributes | Name | ||
---|---|---|---|---|---|---|
real(kind=rk), | intent(in) | :: | cfl | CFL number |
||
real(kind=rk), | intent(in) | :: | length | Reference length of all elements |
||
real(kind=rk), | intent(out) | :: | dt | Resulting time step width |
||
integer, | intent(in) | :: | nPoly | The number of polynomials per spatial direction |