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本文研究冷却剂流经发热通道时,考虑冷却剂内沿流动方向导热后,冷却剂内温度分布。在稳定导热情况下,利用傅利叶定律和热平衡方程,可得一组三个联立方程式。按热源为常数和热源沿长度按余弦分布二种情况,分别求得联立方程组的解。在不稳定导热情况下,在反应堆丧失冷却剂的事故中冷却剂作等加速度运动流经燃料元件时,推导了在各种情况下冷却剂的温升,进行了若干数值计算并对计算结果进行了讨论。
In this paper, we study the temperature distribution in the coolant after the coolant flows through the heating channel, considering the thermal conductivity along the flow direction in the coolant. In the case of stable thermal conductivity, a set of three simultaneous equations are obtained using the Fourier law and the heat balance equation. According to the heat source as a constant and the heat source along the length of the cosine distribution of the two cases, respectively, to find the solution of simultaneous equations. In the case of unstable heat transfer, coolant is accelerated at equal acceleration through the fuel element in the event of coolant loss from the reactor, the temperature rise of the coolant is derived in all cases, several numerical calculations are carried out and the results of the calculations are carried out Discuss.