Problem of negative temperature -- CFD Online Discussion Forums

April 1, 2014, 05:25	Problem of negative temperature	#1
hnemati Member SAM Join Date: Apr 2012 Posts: 74 Rep Power: 14	Dear all I am simulating variable density fluid in a pipe using DNS. For temperature equation I am using Koren Limiter (explicit) for advection part. Since my time step is small I want to send the spanwise derevative of advection to implicit part. When I am doing Central-difference for this implicit part , the temperature in some parts goes negative. I was wondering if someone tell me what the problem is and the solution? Bests

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