Kinetic Theory and Shear Viscosity of Dense Dipolar Hard Sphere Liquids
Peer reviewed, Journal article
Published version
Permanent lenke
https://hdl.handle.net/11250/2723876Utgivelsesdato
2020Metadata
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Originalversjon
10.1103/PhysRevLett.124.218004Sammendrag
Transport properties of dense fluids are fundamentally challenging, because the powerful approaches of equilibrium statistical physics cannot be applied. Polar fluids compound this problem, because the long-range interactions preclude the use of a simple effective diameter approach based solely on hard spheres. Here, we develop a kinetic theory for dipolar hard-sphere fluids that is valid up to high density. We derive a mathematical approximation for the radial distribution function at contact directly from the equation of state, and use it to obtain the shear viscosity. We also perform molecular-dynamics simulations of this system and extract the shear viscosity numerically. The theoretical results compare favorably to the simulations.