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ISSN Печать: 0276-1459
ISSN Онлайн: 1943-6181
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ON THE DEPOSITION RATE OF DROPLETS IN ANNULAR FLOW AROUND A FLOW OBSTACLE
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Краткое описание
Measurement of the deposition rate of droplets in vertical upward annular flow was carried out using air and water as test fluids. The test section was a 5-mm-diameter circular tube, in which a small tube was placed concentrically to test the influence of the presence of a flow obstacle on the deposition rate of droplets. The local deposition rate of droplets was measured at the inlet and downstream of the obstacle section to investigate the mechanism of deposition augmentation caused by the flow obstacle. In contrast to the hypothesis used in available models for the obstacle effect, significant deposition augmentation was detected not only downstream, but also at the inlet of the obstacle section. Simple models for the local deposition rates of droplets around the flow obstacle were developed based on the present experimental results.
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Okawa Tomio, Murakami Toshihiro, Takei Rei, Rate of droplet deposition in steam–water annular flow and effect of a flow obstacle, Nuclear Engineering and Design, 241, 11, 2011. Crossref
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Zhang Huang, Ma Yue, Hu Guang, Liu Qianfeng, Droplet impaction in nuclear installations and safety analysis: Phenomena, findings and approaches, Nuclear Engineering and Design, 366, 2020. Crossref
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Xu Zhigang, Wang Tianyou, Che Zhizhao, Cavity deformation and bubble entrapment during the impact of droplets on a liquid pool, Physical Review E, 106, 5, 2022. Crossref