Characteristics of void fraction distribution of bubbly flow in inclined channels

被引：0

作者：

Yan, Chaoxing ^{[1
]}

Yan, Changqi ^{[1
]}

Sun, Licheng ^{[1
]}

Xing, Dianchuan ^{[1
]}

Liu, Guoqiang ^{[1
]}

机构：

[1] National Defense Key Subject Laboratory for Nuclear Safety and Simulation Technology, Harbin Engineering University, Harbin 150001, Heilongjiang

来源：

Huagong Xuebao/CIESC Journal | 2014年 / 65卷 / 03期

关键词：

Bubble; Gas-liquid flow; Inclined conditions; Interface; Void fraction;

D O I：

10.3969/j.issn.0438-1157.2014.03.013

中图分类号：

学科分类号：

摘要：

Experimental investigation was carried out on the characteristics of void fraction distribution in a narrow rectangular duct (3.25 mm×43 mm) as well as a conventional circular tube (i. d. 50 mm) under inclined conditions to study the influence of inclination on bubble and gas-liquid interface distribution. Air and purified water were used as the test fluids and three inclination angles of 5°, 10° and 15° were selected for experiments. Only wall peak distribution was observed in the narrow rectangular duct and no core peak was present, while for the circular tube, both were observed. Inclination had similar effect on wall peak distribution in two channels. Accordingly, with increasing inclination angle, the peak near the upper wall of the tube boosted up, whereas, the one near the lower wall weakened gradually, and even disappeared. As to core peak distribution in the circular tube, central broad peak leaned to the upper part of the tube, and its value increased as inclination angle increased. In addition, the position of wall peak in the narrow rectangular duct was closer to the channel center than that in the conventional circular tube. © All Rights Reserved.

引用

页码：855 / 861

页数：6

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