境界層を考えた圧縮流体のノズル内流動 : 第2報乱流境界層を仮定した理論計算と圧力分布実験結果

概要

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The one dimensional theoretical calculations of compressible gas flow in nozzles accompanied by turbulent layer at the walls, are carried out in this paper using the similar methods to the case of laminer layer of Part 1. By theoretical consideration, the characteristic nozzle number for the case of turbulent layer is determined by Ω'=lν_0^<1/4>/r^<5/4>u_<so>^<1/4> The experiments of pressure distrbutions of twenty simple nozzles are done, and analyzing their results, the foregoing theoretical results of the two reports are well proved in quality and quantities. The critical Reynold's number is estimated to be 10^4〜10^5,and in practice, the large nozzles more than about 10 mm dia, belong to the turbulent domain.
一般社団法人日本機械学会の論文
1954-09-25