[swm]

Dear all,

I'm writing code to calculate primitive variables(rho,vx,vy,vz,p) on the inlet and outlet interface.

As we know, interpolation is the simplest way, however, in my problem, there's difference between 1st order, 2nd order and 3rd order methods. Since numerical oscillation may happen at inlet and outlet BC, you can't conclude which result is the best.

So, I have to use the convective flux to re-create primitive variables on these two planes.

Does anybody know how to derive primitive variables from corresponding convective flux? Any suggestion will be appreciated.

Many thanks.

swm