Subroutine to calculate the numerical flux for the first equation (u)
Type | Intent | Optional | Attributes | Name | ||
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real(kind=rk), | intent(in) | :: | state(4) | State vector (as conservative variables). The order of this vector has to be where and denoted concentration (scalar) and diffusive fluxes (vector). |
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real(kind=rk), | intent(in) | :: | diffusivity | The diffusivity in the cell. |
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real(kind=rk), | intent(out) | :: | flux(3) | The flux inside the cell. The order of this vector is the same as the input arguments. |