boundedness of the result (negative solute concenteration) -- CFD Online Discussion Forums

August 1, 2010, 17:54	boundedness of the result (negative solute concenteration)	#1
mhassani New Member Muhammad reza hassani Join Date: Apr 2010 Posts: 29 Rep Power: 16	Dear foamers I have added a scalar transport equation to nonNewtonianIcoFoam solver to solve mass transport equation. I expected the results of concentration to be positive all over the domain, however I found out that there are some negative value for the concentration at some points. anyone have any idea of how I can change the setting of the solver to get more realistic results? may be changes in the interpolation scheme or time marching (implicit or explicit) can be effective? by the way, the case is the release of a solute at the inlet of an 2D expansion of a tube. muhammad

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