気ほうを含んだ液体の管内流動に関する研究(第3報) : 管壁より空気を吹き込んだ場合

概要

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In the case of the 1st report, the air bubbles were blown in from the bottom of the upriser. We found, however, that the method of blowing-in of the air had a serious effect on the results, so we blew the air bubbles into the pipe through the radial holes made on the pipe wall near the bottom. We fonud from the experimental results that the mechanism of the flow was approximately the same as before, and also the effects of the method of blowing the air into the pipe were made clear. The relation between the frictional coefficient λ for the flow and the denseness factor K of the bubbles is κψ(K)=(λ-λ_0)υ<1,4>/d for the range K<0.6,where υ is flow velocity, ψ is a function of K, d is diameter of the pipe, λ_0 is 0.195 which corresponds to the large Reynold's number for the range of serious agitation by the air bubbes, K is denseness factor of the air bubbles.
社団法人日本機械学会の論文
1956-09-25