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本文介绍在模拟实际非能动安全壳冷却系统及接近实际安全壳分隔区域尺寸的条件下,大型矩形腔体中由强迫射流所造成的速度场和热分层现象。推导了强迫射流动量何时打破分层现象的判断准则。分析了射流对混合与分层的影响。基于测量结果讨论了大型腔体中因射流与自然对流传热所造成的速度场。
This article describes the velocity field and thermal delamination caused by forced jets in large rectangular cavities under conditions that simulate the actual passive containment cooling system and the size of the actual containment separation zone. The criterion for determining when forced jet momentum can break stratification is derived. The effect of jet on mixing and delamination was analyzed. Based on the measurement results, the velocity field caused by convection and natural convection in a large cavity is discussed.