Similarity Solutions of Starting Jets and Starting Plumes

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by Vincent H. Chu, McGill Univ, Montreal, Canada,

Document Type: Proceeding Paper

Part of: Engineering Mechanics:

Abstract: Similarity solutions of the starting jets and the starting plumes are obtained using a one dimensional model based on the top-hat profiles and the symmetry assumption for the velocity field about the moving stagnation point at the front. The spreading rates of the front obtained from the similarity solutions are 0.396, 0.486, 0.205 and 0.192 for the starting plane jet, the starting plane plume, the starting round jet and the starting round plume, respectively. These very different spreading rates as predicted by the similarity solutions for the various starting jets and starting plumes are in excellent agreement with the experimental observation.

Subject Headings: Plumes | Fluid flow | Symmetry | Velocity profile | Agreements and treaties |

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