Can you please guide me how to calculate the reaction force on a closed PSV with liquid inlet and outlet? API 520 has formulas for vapor and two phase flow PSVs but I don't see anything for liquid flow? would you advise please?
As I know, the answer is negative. You can find some guidance in Peng's book. In addition, for a liquid PSV, it is likely that cannot be a free jet effect in flow dynamics during open-close cycle of PSV. Counting as in paper is just conservative.