Increasing of total temperature -- CFD Online Discussion Forums

December 16, 2011, 12:53	Increasing of total temperature	#1
Roland R Senior Member Roland Rakos Join Date: Mar 2009 Posts: 131 Rep Power: 17	Hello, I have a general 3D flow field. It contains a large region (a tube) where strong swirling zone occurs. In this zones the total temperature always becomes larger than the inlet total temperature which was defined as boundary condition. The walls are adiabatic and free slip. I don’t understand this. How can the total temperature increase above the inlet total temperature if there is not heat input and friction at the walls. Is this because of the viscosity (internal friction) of material? Regards Roland

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