[sarium]

I am looking for reference on using the entropy equation ( i.e. second law) as the final equation for the N.S. instead of the internal energy E or the primitive variable ( Temperature T)...

In particular I am interested on possible closures for the problem or in other words how to compute Temp and Press from a entropy variation Ds.

at the moment i am going with

P=rho*R*T
+
Si-Sr=Cp*ln(Ti/Tr)-R*ln(Pi/Pr)

I would appreciate if anyone knows some papers/references