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基于两流体方法对动量传递模型中各界面力模型和关键参数进行了参数敏感性分析,研究了界面力模型和关键参数对轴向和加热段末端径向参数分布的影响程度和规律,并借助整体效应实验结果对结算结果进行了对比分析。研究表明,在轴向参数影响方面,不同曳力模型由于基本假设不同,对轴向平均空泡份额会产生一定影响,非曳力模型对轴向参数分布基本无影响。在径向参数分布影响方面,曳力模型对其基本无影响,非曳力中湍流分散力和升力对于近壁区域的空泡份额峰值和对径向空泡份额分布具有显著影响,壁面润滑力对壁面空泡份额峰值具有一定影响。虚质量力对轴向和径向参数分布均无显著影响,在流动过冷沸腾计算研究中可予以忽略。
Based on the two-fluid method, the parameter sensitivity analysis of each interface force model and key parameters in the momentum transfer model was carried out. The influence degree and rule of the interface force model and the key parameters on the radial parameter distribution in the axial and heating sections were studied. The overall effect of experimental results on the results of a comparative analysis. The research shows that different axial drag models have different influence on axial average void fraction due to different basic assumptions, and the non-drag model has no influence on the axial parameter distribution. In terms of radial parameter distribution, the drag model has little effect on it. The dispersion and lift of non-drag turbulence have a significant effect on the peak of void fraction and the distribution of radial void fraction in the near-wall region. The wall lubrication force It has a certain influence on the peak of wall void fraction. The virtual mass forces have no significant effect on the axial and radial parameter distributions and can be neglected in the calculation of the flow subcooling boiling.