I want to execute a 3D CFD analysis on swirl nozzle flow using different tangential inlets (3 or 4 tangential inlets) to generate swirl. Will it be possible to analyze 90⁰ (portion) for 4 tangential inlets and 120 ⁰ (portion) for 3 tangential inlets of the whole circular or elliptical nozzle and use symmetry boundary conditions in the other two sides to reduce the computational effort? Thank you.
C. A. A. Carbonel H.
The use of symmetric boundary conditions implies to impose a dynamical behavior that is not precisely real. At an open boundary (inlets), the resulting variables response, at each time instant, are due to the incomming flow and the reflecting response of the swirl system.
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