difference between inlet and outlet flow rate ?? -- CFD Online Discussion Forums

November 22, 2014, 20:49	difference between inlet and outlet flow rate ??	#1
vitorspadetoventurin Member vitor spadeto Join Date: Nov 2014 Posts: 51 Rep Power: 11	I am simulating a flow in a pipe with pimpleFoam solver (imcompressible, newtonian and assuming laminar). Flow rate (m³/s) gives the following error: (outlet flow rate- inlet flow rate ) / inlet flow rate = 0.07 >>> 7% > difference of 7% (I'm using adjustable time step and checkMesh returns "Mesh OK") Values: nu [ 0 2 -1 0 0 0 0 ] 6.85714e-06 diameter = 6mm of pipe max speed = 0.6 m/s Why?? Is this normal? Best Regards, Vitor Spadeto

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