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Adiabatic nucleation in the liquid-vapor phase transition

机译:液相汽相变中的绝热成核

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The fundamental difference between classical (isothermal) nucleation theory (CNT) and adiabatic nucleation theory (ANT) is discussed. CNT uses the concept of isothermal heterophase fluctuations, while ANT depends on common fluctuations of the thermodynamic variables. Applications to the nonequilibrium liquid to vapor transition are shown. However, we cannot yet calculate nucleation frequencies. At present, we can only indicate at what temperatures and pressures copious homogeneous nucleation is expected in the liquid to vapor phase transition. It is also explained why a similar general indication cannot be made for the inverse vapor to liquid transition. , Simultaneously, the validity of Peng~R()binson's equation of state [D.- Y. Peng and D.B. Robinson, Ind. Eng. Chem. Fundam. 15, 59 (1976)] is confirmed for highly supersaturated liquids.
机译:讨论了经典(等温)成核理论(CNT)和绝热成核理论(ANT)之间的根本区别。 CNT使用等温异相涨落的概念,而ANT取决于热力学变量的常见涨落。示出了在非平衡液体到蒸气转变中的应用。但是,我们尚无法计算成核频率。目前,我们只能指出在什么温度和压力下,液相到气相的相变会发生均匀的成核。还解释了为什么不能对逆向蒸气至液体的转变做出类似的一般指示。同时,Peng〜R()binson状态方程[D.- Y. Peng和D.B.罗宾逊,工业工程。化学丰达15,59(1976)]被证实用于高度过饱和的液体。

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