오리피스 전단에 인접한 90° 엘보와 편심율의 변화가 유출계수에 미치는 영향에 관한 실험적 연구

Abstract

The effect of distance between ninety degree elbow close to upstream face of orifice plate and orifice plate on discharge coefficient was investigated. The distributions of discharge coefficient and differential pressure caused by elbow and short upstream straight length were examined and modified discharge coefficient was introduced. Eccentric orifice also investigated to examine the relationship between eccentricity and straight length with simple disturbance. the results presented in this study could be useful when orifice plate is installed under the condition of simple flow disturbance element and short upstream stright length.