作　　者： ; ; ; ; ;

机构地区： 西安交通大学能源与动力工程学院动力工程多相流国家重点实验室

出　　处： 《核动力工程》 2005年第4期335-339,共5页

摘　　要： 在高压试验台上进行了倾斜并联内螺纹管和光管内汽-液两相流不稳定性试验,在此基础上对两种管型进行了对比研究,探讨了两种管型下各种参数对流动不稳定性的影响。对比研究表明,发生压力降型脉动时,光管的界限热负荷小于内螺纹管;发生密度波型脉动时,内螺纹管的界限热负荷小于光管。通过对试验数据进行最小二乘法回归,给出了两种管型内发生不稳定性的界限热负荷无因次方程。 This paper compared the effects of two types of tubes, the internally ribbed tubes and the smooth tubes, on the two-phase flow instabilities in parallel inclined tubes based on the experimental investigation in high pressure test loops. Experimental results showed that the system parameters had important effects on the two-phase flow instabilities both in the two types of tubes. The thresholds of heat flux of pressure drop oscillation in smooth tubes are smaller than that in the internally ribbed tubes; otherwise, the thresholds of density wave oscillation in internally ribbed tubes are smaller than that in the smooth tubes.Non-dimensional correlations of thresholds of heat flux both in the internally fibbed and the smooth tubes had been provided through the regression calculatiOn of test data.

关 键 词： 内螺纹管 光管 不稳定性 汽 液两相流

领　　域： [动力工程及工程热物理] [动力工程及工程热物理]