定位格架对4×4棒束临界热流密度流体模化的影响
Effect of Grid on the Fluid-to-fluid Modeling of Critical Heat Flux in 4×4 Rod Bundle
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摘要: 基于棒束临界热流密度(CHF)流体模化研究现状,进行了 4×4 棒束 CHF流体模化的实验研究。实验结果表明:适用于圆管的CHF流体模化模型不再适用于 4×4 棒束,最后一道定位格架对 4×4 棒束在氟利昂 12中的 CHF有明显的影响,表明定位格架对棒束 CHF流体模化有复杂的影响,需进一步研究。Abstract: Based on the up-to-date research of the fluid-to-fluid modeling of critical heat flux (CHF) in bundle, the experiment on fluid-to-fluid modeling of CHF in 4×4 bundle was carried out. The results show that the models which fit to fluid-to-fluid modeling of CHF in tube can’t fit to that in 4×4 rod bundle, and the last grid in the bundle has an effect on the CHF in Freon-12. It indicates that the effect of the last grid on the fluid-to-fluid modeling of CHF in bundle is complicated and the further study is necessary.
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