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Deriving analytical expressions for the ideal curves and using the curves to obtain the temperature dependence of equation-of-state parameters
, Article International Journal of Thermophysics ; Volume 27, Issue 5 , 2006 , Pages 1564-1589 ; 0195928X (ISSN) ; Izanloo, C ; Sharif University of Technology
2006
Abstract
Different equations of state (EOSs) have been used to obtain analytical expressions for the ideal curves, namely, the Joule-Thomson inversion curve (JTIC), Boyle curve (BC), and Joule inversion curve (JIC). The selected EOSs are the Redlich-Kwong (RK), Soave-Redlich-Kwong (SRK), Deiters, linear isotherm regularity (LIR), modified LIR (MLIR), dense system equation of state (DSEOS), and van der Waals (vdW). Analytical expressions have been obtained for the JTIC and BC only by using the LIR, MLIR, and vdW equations of state. The expression obtained using the LIR is the simplest. The experimental data for the JTIC and the calculated points from the empirical EOSs for the BC are well fitted into...
Size dependence and effect of potential parameters on properties of nano-cavities in liquid xenon using molecular dynamics simulation
, Article Chemical Physics ; Volume 381, Issue 1-3 , March , 2011 , Pages 44-48 ; 03010104 (ISSN) ; Abroshan, H ; Taherkhani, F ; Izanloo, C ; Parsafar, G. A ; Sharif University of Technology
2011
Abstract
We have investigated the size dependence of a nano-cavity properties produced in a Xe fluid using molecular dynamics simulations. We have created a nano-cavity of different sizes at 170 and 200 K (cavities diameters are within 1-10 nm). Liquid pressure, vapor pressure and surface tension of the nano-cavity for some given values of diameter are calculated. Within 1-10 nm cavity diameter, we have observed two opposite behavior for dependency of surface tension on the cavity diameter: for the range of 1-5 nm, it increases with the diameter, while, for the range of 5-10 nm remains constant. Also, the value of liquid pressure becomes less negative, when the size of cavity increases. Vapor...