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根据大容器沸腾换热理论和工件淬火连续冷却过程的实际情况,对 Leidenfrost 过渡的理想模型提出了修正的数学模型;将淬火过程中相变产生的条件和相变潜热引入内热源中,建立含相变的热传导方程。在以上控制方程组的基础上,讨论了对应的泛函,然后用有限元对算倒进行了计算。比较计算与测试结果,证实了本文提出的边界换热数学模型和所建立的含相变热传导方程的正确性。
According to the theory of large container boiling heat transfer and the continuous quenching process of workpiece, a modified mathematical model is proposed for the ideal model of Leidenfrost transition. The conditions and the latent heat of phase transformation during quenching are introduced into the internal heat source, Heat transfer equation of phase transition. Based on the above control equations, the corresponding functional is discussed, and then the calculation is performed by finite element method. Comparing the calculation results with the test results, it proves the mathematical model of the boundary heat transfer and the correctness of the established phase transition heat conduction equation.