Piso with meshless -- CFD Online Discussion Forums

January 4, 2022, 16:56	Piso with meshless	#1
Mateja New Member Mateja Join Date: Jan 2020 Posts: 20 Rep Power: 6	Hello, I am solving single phase, compressible flow in a cd tube with meshless method. The pressure velocity coupling is done through PISO. PISO is solved with 1 predictor and two corrector steps. Everything works fine untill the end of 1st corrector but including viscous terms (laplacian and grad of divergence of velocity differences) in the 2nd corrector syeps makes the pressure negative. If anyone can guide me why is that so? If someone cn help i can post my equtions too.

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