نتایج جستجو برای: bgk model
تعداد نتایج: 2104555 فیلتر نتایج به سال:
We consider a kinetic BGK model relaxing to isentropic gas dynamics previously introduced by the authors, but with Dirichlet boundary condition on the incoming velocities. We pass to the limit as the relaxation parameter tends to zero by compensated compactness inside the domain, and obtain that the limit satisses entropy inequalities on the boundary involving weak traces of entropy uxes. Our m...
Simulating hypersonic flow around a space vehicle is challenging because of the multiscale and nonequilibrium nature inherent in these flows. To effectively deal with such flows, hybrid scheme combining stochastic particle Bhatnagar-Gross-Krook (BGK) method direct simulation Monte Carlo (DSMC) was developed recently, but only for monatomic gases (Fei et al. (2021) [29]). In this paper, particle...
The identification and geographic distribution of the herpes simplex virus type 1 (HSV-1) BglII restriction fragment length polymorphism (RFLP) variants named BgK(L) and BgO(L) in clinical isolates from orolabial and cutaneous sites were described in our previous reports, in which the dispersion and replacement of HSV-1 variants were proposed. The base substitution sites deduced from the BgK(L)...
We show existence of a non-equilibrium steady state for the one-dimensional, non-linear BGK model on an interval with diffusive boundary conditions. These conditions represent coupling system two heat reservoirs at different temperatures. Our analysis is not perturbative around equilibrium. employ fixed point argument to reduce study collisional interactions linear BGK.
We present a second-order BGK scheme for the equations of multidimensional radiation hydrodynamics (RHE) in zero diffusion limit by using the generalized Maxwellian in [1] and the second-order BGK scheme for the Euler equations in [2, 3]. This extends a (firstorder) kinetic flux vector splitting scheme (KFVS) for RHE in [1] to a second-order BGK scheme. Several oneand two-dimensional numerical ...
The Enskog–Vlasov equation provides a consistent description of the microscopic molecular interactions for real fluids based on kinetic and mean-field theories. fluid flows in nano-channels are investigated by Bhatnagar–Gross–Krook (BGK) type model, which simplifies complicated collision operator enables large-scale engineering design simulations. density distributions found to exhibit inhomoge...
We study a liquid droplet moving inside rarefied gas. In other words, we consider two-phase flow with and gas phases an interface between the two which deforms respect to time space. The phase is modelled by Bhatanager–Gross–Krook (BGK) model of Boltzmann equation. incompressible Navier–Stokes equations. Interface boundary conditions for are presented. BGK solved semi-Lagrangian scheme meshfree...
We quantitatively evaluate the capability and accuracy of the lattice Boltzmann equation (LBE) for modeling flow through porous media. In particular, we conduct a comparative study of the LBE models with the multiple-relaxation-time (MRT) and the Bhatnagar– Gross–Krook (BGK) single-relaxation-time (SRT) collision operators. We also investigate several fluid–solid boundary conditions including: ...
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