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Unphysical jump in pressure at the outlet predicted by rhoCentralFoam

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Old   January 23, 2016, 09:49
Default Unphysical jump in pressure at the outlet predicted by rhoCentralFoam
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My name is Sathya, I had a question regarding the results of a simulation I ran. This corresponds to the well known case of transonic flow over a bump in a channel (the ONERA bump). I considered inviscid 2-D flow, and applied :
1. Slip boundary conditions at the top and bottom of the channel
2. 2-D (empty) at the front and back.
3. Total pressure and total temperature of 96000 Pa and 300 K at the inlet
Also, applied the pressureDirectedInletVelocity, to compute the inlet velocity perpendicular to the inlet normal, given a prescribed static pressure at the outlet.
4. Prescribed a static pressure of 57000 Pa.
I ran the case on the density based rhoCentralFoam solver.
The results were un-physical in the sense that a sudden rise in pressure to the prescribed outlet pressure was observed.
I will put up a plot of the 2D pressure plot with the post.
Any suggestions/comments on the possible error in modelling or unsuitability of the solver would be appreciated
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