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详细分析了控制棒下落运动的受力情况 ,并建立了相应的数学模型 ,结合秦山核电站30 0MW控制棒热态落棒实验数据 ,对数学模型进行了修正 ,同时对模型中的有关系数进行了拟合。用拟合的系数进行热态落棒数值模拟 ,结果与实验结果吻合很好 ,验证了数学模型的正确性。为控制棒下落的机理分析和数值求解控制棒落棒提供了理论依据和求解方法。
In this paper, the force of falling of the control rod is analyzed in detail, and the corresponding mathematical model is established. Based on the experimental data of the thermal bar drop of the 30 MW control rod at Qinshan Nuclear Power Station, the mathematical model is modified, and the relevant coefficients in the model Fitting. The fitting coefficients are used to simulate the falling of hot bars. The results are in good agreement with the experimental results, which proves the correctness of the mathematical model. It provides a theoretical basis and solution method for the mechanism analysis of rod falling and numerical solution of rod falling.