87 citations · 773 across the 65 of their papers we have counts for
9 papers · 1 filter
Vielbein Lattice Boltzmann approach for fluid flows on spherical surfaces
Victor E. Ambrus, Elisa Bellantoni, Sergiu Busuioc +2
In this paper, we develop a lattice Boltzmann scheme based on the Vielbein formalism for the study of fluid flows on spherical surfaces. The Vielbein vector field encodes all detai…
Analytical structure of the binary collision integral and the ultrarelativistic limit of transport coefficients of an ideal gas
David Wagner, Victor E. Ambrus, Etele Molnar
In this paper we discuss the analytical properties of the binary collision integral for a gas of ultrarelativistic particles interacting via a constant cross-section. Starting from…
Implementation of the force term in half-range lattice Boltzmann models
Victor E. Ambrus, Victor Sofonea, Richard Fournier +1
In the frame of the Boltzmann equation, wall-bounded flows of rarefied gases require the implementation of boundary conditions at the kinetic level. Such boundary conditions induce…
Lattice Boltzmann models based on the vielbein formalism for the simulation of flows in curvilinear geometries
Sergiu Busuioc, Victor E. Ambrus
In this paper, we consider the Boltzmann equation with respect to orthonormal vielbein fields in conservative form. This formalism allows the use of arbitrary coordinate systems to…
Study of transport coefficients in ultrarelativistic kinetic theory
Victor E. Ambrus
A spatially-periodic longitudinal wave is considered in relativistic dissipative hydrodynamics. At sufficiently small wave amplitudes, an analytic solution is obtained in the linea…
Two-dimensional off-lattice Boltzmann model for van der Waals fluids with variable temperature
Sergiu Busuioc, Victor E. Ambrus, Tonino Biciusca +1
We develop a two-dimensional Lattice Boltzmann model for liquid-vapour systems with variable temperature. Our model is based on a single particle distribution function expanded wit…