Negative value of additional variable -- CFD Online Discussion Forums

October 13, 2009, 11:19	Negative value of additional variable	#1
fkzstar New Member Joe Join Date: Mar 2009 Posts: 7 Rep Power: 17	Hi All, I've got a question about the additional variable in CFX 11.0. It's a transient calculation with additional variable set to simulate tracer gas. The additional variable type is 'specific' with a value of 1 at one inlet and 0 at another inlet. When doing contour plots in the post-processing, I found it has a global range of -0.09 to 1.04, which is physicallly unrealistic. Has anyone got a clue on this? Thanks in advance.

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