Bijoy Kumar
5 Papers
43 Citations
Bijoy Kumar is an academic researcher. The author has contributed to research in topics: Lennard-Jones potential & Perturbation theory. The author has an hindex of 4, co-authored 5 publications.
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Papers
Dynamics of pair diffusion in hard sphere fluids
Glenn T. Evans,Bijoy Kumar +1 more
TL;DR: In this paper, the authors applied kinetic theory to the analysis of the position and frequency dependence of the friction coefficient describing pair diffusion of hard spheres in their parent fluid, and found that the high frequency friction increases monotonically with internuclear separation from its contact value (at R=σ) up to a maximum at R=2σ, whereupon the friction attains its Enskog value.
15
Translational dynamics in simple dense fluids. II. Self‐diffusion
Bijoy Kumar,Glenn T. Evans +1 more
TL;DR: In this paper, the authors applied the kinetic theory of dense fluids to the calculation of the self-diffusion coefficient of hard spheres in a hard sphere bath, which was obtained by the expansion of the recollision operator in terms of a truncated set of four functions.
15
The use of the variational principle in molecular perturbation theory
Saul Goldman,Bijoy Kumar +1 more
TL;DR: In this article, the Variational Principle was used to optimize the choice of the expansion functional and the reference state potential in molecular perturbation theory, which was applied to a Stockmayer and to a Lennard-Jones diatomic fluid.
10
Invariant expansions of the radial distribution function for fluids of hard convex bodies
TL;DR: In this paper, the radial distribution functions (RDF) for systems consisting of a single nonspherical convex body in a fluid of spheres and for a pure fluid of non-convex bodies are expressed in terms of the minimum surface-to-surface separation and a set of angles derived from the surface normal.
6
Toward optimizing the sphericalized reference state in molecular perturbation theory: The Lennard‐Jones diatomic fluid
TL;DR: In this article, a molecular perturbation theory based on an isotropic reference state was presented, and applied to a Lennard-Jones diatomic model of liquid nitrogen, which involves an additional degree of freedom made manifest through a parameter (α) that was previously absent from such theories.
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