adiabatic walls yet enthalpy change
Hi,
I've got flow through a pipe with a throat and adiabatic walls. The temperatures at inlet and outlet are equal, at 300K. Presumably, under adiabatic conditions, with no work done on the flow within the pipe, I would not expect any change in the stagnation enthalpy of the fluid, right? Yet, downstream of the throat, I get regions of higher stagnation temperature (~330K), which are then convected down the pipe. Fluent reports that this is the converged solution, but I don't see how it makes sense! Thanks in advance, if you are able to provide some valuable insight! Chris |
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