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中文摘要：
在这篇论文，空气水蒸汽水系统在二阶段的流动系统在非平衡阶段变化过程期间作为经常压力的特定的热的一个例子，和公式被拿用二阶段的流动和 thermophysics 的理论被推出。非平衡阶段变化过程的经常压力的特定的热与相应数字模型一起被计算，并且数字结果与平衡阶段变化过程的那些相比。它在蒸发过程被看那，特定的热与增加起始的液体温度和粒子团部分增加的非平衡的变化的率。半径是越多小粒子，变化的率是越多 faster。同时，平衡过程的 constant-pressurespecific 热总是比非平衡过程的高。
英文摘要：
In this paper, the air-water vapor-water system is taken as an example, and the formula of constantpressure specific heat during non-equilibrium phase change process in the two-phase flow system is deduced using the theory of two-phase flow and thermophysics. The constant-pressure specific heat of non-equilibrium phase change process is calculated with the corresponding numerical model, and the numerical results are compared to those of the equilibrium phase change process. It is shown that in evaporation process, the variational rate of the non-equilibrium specific heat increases with increasing initial fluid temperature and particle mass fraction. The smaller particle radius is, the faster the variational rate is. Meanwhile, the constant-pressure specific heat of equilibrium process is higher than that of the non-equilibrium process all the time.
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