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首页> 外文期刊>Nuclear Engineering and Design >Investigation of temperature fluctuation phenomena in a stratified steam-water two-phase flow in a simulating pressurizer spray pipe of a pressurized water reactor
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Investigation of temperature fluctuation phenomena in a stratified steam-water two-phase flow in a simulating pressurizer spray pipe of a pressurized water reactor

机译：压水堆模拟增压器喷水管内分层汽水两相流温度波动现象研究

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Temperature fluctuation phenomena in a stratified steam-water two-phase flow in a horizontal rectangular duct, which simulate a pressurizer spray pipe of a pressurized water reactor, were studied experimentally. Vertical distributions of the temperature and the liquid velocity were measured with water of various dissolved oxygen concentrations. Large liquid temperature fluctuations were observed when the water was deaerated well and dissolved oxygen concentration was around 10 ppb. The large temperature fluctuations were not observed when the oxygen concentration was higher. It was shown that the observed temperature fluctuations were caused by the internal gravity wave since the Richardson numbers were larger than 0.25 and the temperature fluctuation frequencies were around the Brunt-Vaisala frequencies in the present experimental conditions. The temperature fluctuations decreased by the non-condensable gas since the non-condensable gas suppressed the condensation and the temperature difference in the liquid layer was small. (C) 2017 Elsevier B.V. All rights reserved.
机译：实验研究了水平矩形管道中分层的汽水两相流中的温度波动现象，该现象模拟了压水反应堆的增压喷水管。用各种溶解氧浓度的水测量温度和液体速度的垂直分布。当对水充分除气并且溶解氧浓度约为10 ppb时，观察到较大的液体温度波动。当氧浓度较高时，未观察到较大的温度波动。结果表明，在目前的实验条件下，由于理查森数大于0.25，且温度波动频率在Brunt-Vaisala频率附近，因此观察到的温度波动是由内部重力波引起的。由于不凝性气体抑制了凝结，并且液体层中的温度差小，因此由于不凝性气体的温度波动减小。 （C）2017 Elsevier B.V.保留所有权利。

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