Perturbation and variational approach for the equation of state for hard-sphere and Lennard-Jones fluids |
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Authors: | S B Khasare |
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Institution: | Department of Physics, Science College Congress Nagar, Nagpur, India |
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Abstract: | The present work uses the concept of a scaled particle along with the perturbation and variation approach, to develop an equation of state (EOS) for a mixture of hard sphere (HS), Lennard–Jones (LJ) fluids. A suitable flexible functional form for the radial distribution function G(R) is assumed for the mixture, with R as a variable. The function G(R) has an arbitrary parameter m and a different equation of state can be obtained with a suitable choice of m. For m = 0.75 and m = 0.83 results are close to molecular dynamics (MD) result for pure HS and LJ fluid respectively. |
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Keywords: | equation of state Lennard-Jones potential hard-sphere potential liquid mixture com- puter simulation |
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