By definition, p_rgh is deduction of hydro-static pressure (i.e. rho.g.h) from the pressure: p_rgh = p – rho.g.h =/ 1/2*rho*U^2 p_rgh is not equal to dynamic pressure, specially in multiphase flow where rho changes throughout the domain. It is just the difference between real pressure and the rho*g*z field. That’s one of the reasons that […]