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Free jet B.C.

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Old   August 10, 2008, 04:46
Default Free jet B.C.
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shuo
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I am simulating a Free jet using a domain 20 diameters*20 diameters (300 x 300 pts). The Euler equations are solved in r_z coordinates with symmetry imposed on the jet centerline. The simulation is started with jet being issued from a convergent nozzle. (The nozzle exit is a fixed boundary condition) I use the non-reflective boundary condition proposed by Thompson. It seems when the jet goes through the boundary reflections are generated. How can i overcome this?

Thanks Shuo
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