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April 1, 2014, 05:25
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Problem of negative temperature
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Member
SAM
Join Date: Apr 2012
Posts: 74
Rep Power: 13  |
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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