Experimental investigation and a mechanical model of critical heat flux in a narrow rectangular channel
Experimental investigation and a mechanical model of critical heat flux in a narrow rectangular channel
复制标题
窄矩形通道内临界热通量的实验研究和力学模型
DOI:
10.1016/j.expthermflusci.2021.110432
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发表时间:
2021-10
影响因子:
3.2
通讯作者:
Liang-ming Pan
中科院分区:
文献类型:
--
作者:
Meiyue Yan;Qingche He;Zaiyong Ma;Hao Liu;Lingfeng Wan;Zhongchun Li;Liang-ming Pan
CHF is the maximal limit of heat flux in boiling heat transfer, therefore, it is a crucial parameter that has a fundamental impact on the security and economy of the nuclear system. An experimental investigation was carried out in the present study to identify the dominant CHF mechanism in a narrow rectangular channel at different gap sizes (2 mm and 3 mm). The visualization experiments were performed at pressures ranging from 1 to 4 MPa, inlet subcooling from 60 to 120 K, and mass flux of 350–2000 kg/(m2·s). A theoretical model of DNB-type CHF has been proposed through visualization phenomena and bubble dynamics analysis. A set of constitutive correlations is developed to close the model. An assessment of the new model has been conducted using the experimental data for the upward flow in a vertical narrow rectangular channel. The predicted results show good accuracy, which is less than 30% relative to the present CHF data and other CHF data under high-pressure conditions.
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影响因子:
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通讯作者:
Jian-jun Xu;Bingde Chen;Xiaojun Wang
影响因子:
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DOI:
--
发表时间:
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期刊:
--
影响因子:
--
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通讯作者:
W. Ding;T. Geissler;E. Krepper;U. Hampel
DOI:
--
发表时间:
2003
期刊:
--
影响因子:
--
作者:
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通讯作者:
Nilanjana G. Basu