An approximate formula for the capacitance-void fraction relationship for annular flows

Sin Kim; Jeong Seong Lee; Kyung Youn Kim; Kyung Ho Kang; Byung Jo Yun

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An approximate formula for the capacitance-void fraction relationship for annular flows

机译：环流的电容-空隙比关系的近似公式

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摘要

A capacitance method is applied to measure the space-averaged void fraction in concentric annular flows. From the analytical solution of the governing electrical field equations, the expression for the capacitance in terms of a given void fraction is derived. Also, a closed form formula to predict the void fraction from the capacitance measurement is proposed. The relationship between the capacitance and the void fraction is successfully compared with static phantom experiments.

机译：应用电容法测量同心环形流中的空间平均空隙率。从控制电场方程的解析解中，可以得出以给定空隙率表示的电容表达式。此外，提出了一种封闭形式的公式，可以根据电容测量结果来预测空隙率。电容和空隙率之间的关系已成功地与静态体模实验进行了比较。

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来源
《Measurement Science & Technology》 |2009年第12期|共7页
作者
Sin Kim; Jeong Seong Lee; Kyung Youn Kim; Kyung Ho Kang; Byung Jo Yun;
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原文格式 PDF
正文语种 eng
中图分类仪器、仪表;
关键词
void fraction; concentric annular flow; capacitance; capacitance void meter;

机译：空隙率;同心环形流;电容;电容空隙仪;

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1. An approximate formula for the capacitance-void fraction relationship for annular flows [J] . Sin Kim, Jeong Seong Lee, Kyung Youn Kim, Measurement Science & Technology . 2009,第12期

机译：环流的电容-空隙比关系的近似公式
2. An investigation of a model of the flow pattern transition mechanism in relation to the identification of annular flow of R134a in a vertical tube using various void fraction models and flow regime maps [J] . Dalkilic AS, Wongwises S Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics . 2010,第6期

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机译：计算可压缩流动中湍流边界层动量厚度的近似公式

An approximate formula for the capacitance-void fraction relationship for annular flows

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