半径流ノズルに関する研究 : 第1報, 外向き流れの理論的解析

概要

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In connection with pneumatic micrometers, the outward flow characteristics of narrowly spaced radial-flow nozzles are studied with analytical methods. Assuming that fluid is incompressible and the velocity distribution in a boundary layer is parabolic, the momentum equation of a laminar boundary layer is solved approximately. Thus it becomes possible to calculate theoretically the inlet length, the velocity distribution in the clearance, the pressures at various radii or the pressure loss of any nozzle. As a corresponding value to Reynolds number, in this case, R=Vh^2/vr_1,should be used, where h is a breadth of a clearance, r_1 is the inner radius of a nozzle and V is a radial mean velocity at r_1. Then profiles of pressure and velocity distributions are determined by R only.
一般社団法人日本機械学会の論文
1962-02-25