Abstract
Three dimensional interacting flowfield of two parallel axisymmetric jets is calculated by the DSMC method. Under limited computer resource it is not easy to simulate the three dimensional flowfield using the method, because every volume of cell is very small and the number of molecules within the cell becomes also very small. In the present calculation the upstream flowfield of each orifice is assumed to be axisymmetric and only the downstream of the orifice is managed to be three dimensional although the downstream flowfield is restricted within one fourth of the full flowfield. The secondary jet-cell that is formed with two barrel shocks of the two primary jets can be seen clearly in the middle between the jets. The fundamental flow structure calculated by the DSMC method is compared with the experimental result of flow visualization by the laser induced fluorescence technique.
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