冷風研削加工用矩形断面先細末広ノズルの開発(生産加工)

概要

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This study provides useful information to design proper supersonic convergent-divergent nozzle (C-D nozzle) of rectangular cross-section for cooling air grinding. Experimental analysis verifies that behavior of the air flow through the C-D nozzle is similar to the isentropic flow of the perfect gas if the frictional exclusion caused near the inner wall is allowed for the convergent part to minimize reduction of the isentropic efficiency. The potential core length L_<PC> is measured out under the correct expansion condition. Each L_<PC> is correlated with air flow parameters, stagnation pressure p_0, the flow rate Q*, and geometric parameters of the convergent configuration. A procedure, which is capable of determining the nozzle configuration, is proposed based on the isentropic assumption and experimental relationship between L_<PC> and Q*.
一般社団法人日本機械学会の論文
2004-03-03