Stagnation point offset of two opposed jets
2008
The flow field of two opposed jets was experimentally investigated with the smoke-wire technique and hot-wire anemometer for the stability of impingement plane and stagnation point offset at various nozzle separations and exit velocity ratios.The results showed that at 2D≤L≤4D(where L is nozzle separation and D is nozzle diameter),the impingement plane was instable and oscillated at equal exit velocities,while the impingement plane deviated from the mid-point to a large extent and the flow field became stable comparatively at a small difference of exit velocities.At 2D≤L≤8D,the stagnation position was very sensitive to the change of velocity ratio;while at L2D or L8D,the position of stagnation point became insensitive to the change of exit velocity ratio.
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