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Thermodynamics of Three-phase Equilibrium by Van Der Waals Equation of State

机译:范德华状态方程的三相平衡热力学

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The phase diagram for a three-phase equilibrium was derived using van der Waals (vdW) equation of state (EOS) with respect to pressure. Aside from the typical liquid-gas vdW EOS, a new solid-gas vdW EOS was introduced. The new vdW EOS had the same functional form as the original equation of state and only the van der Waals coefficients were different. The thermodynamic EOSs were integrated to obtain the internal energy and the integral constants were given explicitly. The calculated phase diagram was consistent with that for argon and the Lennard-Jones system.
机译:使用关于压力的范德华(vdW)状态方程(EOS)导出了三相平衡的相图。除了典型的液化气vdW EOS,还引入了新的固液化vdW EOS。新的vdW EOS具有与原始状态方程相同的功能形式,只有van der Waals系数不同。对热力学EOS进行积分以获得内部能量,并明确给出积分常数。计算出的相图与氩气和Lennard-Jones系统的相图一致。

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