有底の円筒に噴出する同軸の円形噴流に関する研究

概要

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The present paper deals with the problem of a turbulent round jet discharged into a coaxialdeadend pipe associated with that of flow in a flue. This was already studied by several investigators and they found an interesting fact: depending on the geometrical ratio of the jet and the pipe, the jet reaches close to the bottom of the pipe in some cases and reverses midway far from the bottom to the opposite open end in other cases. To clarify this geometrical ratio governing flow patterns, some experiments and measurements are carried out for several ratios. Numerical computations are also carried out to solve the equations for vorticity and stream function by making use of the k-ε turbulence model. Finally, it is shown that the experimental results can be reproduced by the computations and the effect of the geometrical ratio is made clear.
社団法人日本機械学会の論文
1989-10-25