Correction for non-choked flow

If correction for non-choked flow is not required (see A8 4.4 below), the value of G, taking account of friction and static head, can then be found from  

The evaluation of G in a rigorobs way using the Omega method for non-choked flow in the presence of friction and static head change requires the solution of an integral equation (equation (21) of reference 5). This can.be time-consuming. 

the above.equation, r is.the actual.available pressure ratio (back pressure, e.g. atmospheric, divided by pressure in the upstream reactor). 

WORKBOOK FOR CHEMICAL REACTOR RELIEF SYSTEM SIZING 

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