Hi Kalyan Sir, nSir, I ran a steady simulation on the exhaust manifold with coupled algorithms, and the residual and results which I was getting were not appropriate I mean the residual was blowing for your reference I attached the snap so, but when I simulated with the SIMPLE algorithm by keeping other parameters same I got appropriate results.nSo, sir may I know what was the reason for residual was blowing? And How he gave correct results for the same conditions when ran with a SIMPLE algorithm. Thanks in advance.nnThank you,nAbu Bakar khan nn