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A hybrid VOF-IBM method for the simulation of freezing liquid films and freezing drops

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 432 ()

This work is devoted to the development of a new hybrid VOF-IBM method for the simulation of freezing liquid films and freezing drops. The VOF and IBM......

First-passage problem for stochastic differential equations with combined parametric Gaussian and Levy white noises via path integral method

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 435 ()

We study the first-passage problem for a process governed by a stochastic differential equation (SDE) driven simultaneously by both parametric Gaussia......

On derivation and verification of a kinetic model for quantum vibrational energy of polyatomic gases in the gas-kinetic unified algorithm

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 435 ()

In this paper, a kinetic Boltzmann model equation involving internal degrees of freedom is constructed for thermodynamic non-equilibrium polyatomic ga......

A study of higher-order reconstruction methods for genuinely two-dimensional Riemann solver

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 443 ()

Balsara's genuinely multidimensional Riemann solvers, which possess a simple closed-form and high efficiency in the low-order cases, realize their mul......

Smoothed particle hydrodynamics with adaptive spatial resolution (SPH-ASR) for free surface flows

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 443 ()

A numerical method based on smoothed particle hydrodynamics with adaptive spatial resolution (SPH-ASR) was developed for simulating free surface flows......

Efficient mesh deformation using radial basis functions with a grouping-circular-based greedy algorithm

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 433 ()

A grouping-circular-based (GCB) greedy algorithm is proposed to improve the efficiency of mesh deformation. By incorporating the multigrid concept tha......

Hermite spectral method for Fokker-Planck-Landau equation modeling collisional plasma

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 434 ()

We propose an Hermite spectral method for the Fokker-Planck-Landau (FPL) equation. Both the distribution functions and the collision terms are approxi......

The global optimal reference field for the difference formulation in the implicit Monte Carlo radiation transport

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 435 ()

Statistical noise has always been one of the most important problems hindering the wide application of the Monte Carlo method in thermal radiative tra......

A method for representing periodic functions and enforcing exactly periodic boundary conditions with deep neural networks

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 435 ()

We present a simple and effective method for representing periodic functions and enforcing exactly the periodic boundary conditions for solving differ......

Three dimensional high-order gas-kinetic scheme for supersonic isotropic turbulence II: Coarse-graining analysis of compressible K-sgs budget

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 439 ()

The direct numerical simulation (DNS) of compressible isotropic turbulence up to the supersonic regime with Ma(t) = 1.2 has been investigated by the h......

Efficient boundary condition-enforced immersed boundary method for incompressible flows with moving boundaries

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 441 ()

In this work, the original boundary condition-enforced immersed boundary method (IBM) [Wu and Shu (2009) [1], (2010) [2]] is improved to efficiently s......

Absolutely convergent fixed-point fast sweeping WENO methods for steady state of hyperbolic conservation laws

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 443 ()

Fixed-point iterative sweeping methods were developed in the literature to efficiently solve steady state solutions of Hamilton-Jacobi equations and h......

Learning and correcting non-Gaussian model errors

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 432 ()

All discretized numerical models contain modeling errors - this reality is amplified when reduced-order models are used. The ability to accurately app......

A structure preserving numerical scheme for Fokker-Planck equations of neuron networks: Numerical analysis and exploration

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 433 ()

In this work, we are concerned with the Fokker-Planck equations associated with the Nonlinear Noisy Leaky Integrate-and-Fire model for neuron networks......

Simple high order well-balanced finite difference WENO schemes for the Euler equations under gravitational fields

期刊: JOURNAL OF COMPUTATIONAL PHYSICS, 2021; 437 ()

The compressible Euler equations coupled with the gravitational source terms admit a hydrostatic equilibrium state where the gradients of the flux ter......

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