用γ射线衰减技术测量两相流中空泡份额精度的试验研究

AN EXPERIMENTAL INVESTIGATION FOR ACCURACY OF MEASURING VOID FRACTION BY γ-ATTENUATION TECHNIQUE IN TWO-PHASE FLOW

摘要: <正> 一、引言用γ射线衰减技术测量两相流中的空泡份额,方法简单,应用最为广泛,并常以它来对其它测量方法进行标定,因此它的测量精度就十分重要。对于一次测量法,在空泡份额>10％的情况下认为可达±5％,而实际上一般取为±10％。

Abstract: The most widely used technique for the measurement of void fraction intwo--phase flow is the γ--ray attenuation method. In the present work themeasuring accuracy of "one shot" method has been studies. Lucite mockups,mechined to simulate actual flow conditions, are used. The experimental studiesindicated that the typical measuring accuracy of "one--shot" method was betterthan±10%.