矩形通道轴向非均匀加热条件下的CHF研究
Study of CHF under Non-uniform Heating Condition in Rectangular Channel
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摘要: 针对已有的计算均匀加热条件下的临界热流密度（CHF）的关系式，如Sudo93、Sudo96、Knoebel公式以及W3公式，加以非均匀条件的考虑，推广到矩形通道工况下，并用计算非均匀加热条件的沸腾长度法和F因子法对其进行修正。针对中国先进研究堆（CARR）的实际运行工况，运用修正后的计算结果与CARR的实验值进行比较。结果表明，通过F因子修正后的Sudo系列公式计算结果与实验值符合良好，从而能够较好地预测CARR的CHF现象。Abstract: Aimed at the existing correlations of CHF (critical heat flux) under the condition of uniform heating, such as Sudo93, Sudo96, Knoebel and W3 formulas, the non-uniform heating condition was considered, and the correlation of CHF was generalized to rectangular channel condition and revised by the method of length of boiling and F factor method. Aimed at the actual operating case of China Advanced Research Reactor (CARR), the revised calculation results were compared with the experimental values of CARR. The results show that the results of Sudo series formulas which are revised by F factor are in good agreement with the experimental values, so they can better predict the CHF phenomenon of CARR.
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Keywords:
- rectangular channel ,
- non-uniform heating ,
- critical heat flux ,
- F factor
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