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We consider a special type of fast reaction-diffusion systems in which the coefficients of the reaction terms of the two substances are much larger than those of the diffusion terms while the diffusive motion to the substrate is negligible.…

数值分析 · 数学 2024-04-30 Yu Zhao , Zhennan Zhou

The paper presents new method for calculating the low-temperature asymptotics of free energy of the 3D Ising model in external magnetic field $(H\neq 0)$. The results obtained are valid in the wide range of temperature and magnetic field…

统计力学 · 物理学 2007-05-23 Martin S. Kochman'ski

We consider the radiation transfer problem in the discrete-ordinate, plane-parallel approach. We introduce two benchmark problems with exact known solutions and show that for strongly non-homogeneous media the homogeneous layers…

计算物理 · 物理学 2007-05-23 M. -P. Zorzano , A. M. Mancho , L. Vazquez

A semi-explicit formula of solution to the boundary layer system for thermal layer derived from the compressible Navier-Stokes equations with the non-slip boundary condition when the viscosity coefficients vanish is given, in particular in…

偏微分方程分析 · 数学 2016-08-10 Cheng-Jie Liu , Ya-Guang Wang , Tong Yang

In this paper, a fast synthetic iterative scheme is developed to accelerate convergence for the implicit DOM based on the stationary phonon BTE. The key innovative point of the present scheme is the introduction of the macroscopic synthetic…

计算物理 · 物理学 2018-12-18 Chuang Zhang , Songze Chen , Zhaoli Guo , Lei Wu

Thermal radiation transport (TRT) is a time dependent, high dimensional partial integro-differential equation. In practical applications such as inertial confinement fusion, TRT is coupled to other physics such as hydrodynamics, plasmas,…

数值分析 · 数学 2024-08-14 Ben S. Southworth , Samuel S. Olivier , HyeongKae Park , Tommaso Buvoli

A Cahn-Hilliard-Allen-Cahn phase-field model coupled with a heat transfer equation, particularly with full non-diagonal mobility matrices, is studied. After reformulating the problem w.r.t. the inverse of temperature, we proposed and…

In this paper we study the application of a simplified method to solve the dynamic radiative transfer problem in expanding envelopes. The method, which requires a computational effort similar to that of the diffusion approximation, is based…

天体物理学 · 物理学 2009-10-28 J. Gomez-Gomar , J. Isern

We present a thermodynamically consistent method by which equations of state based on nonrelativistic potential models can be modified so that they respect causality at high densities, both at zero and finite temperature (entropy). We…

高能天体物理现象 · 物理学 2017-05-17 Constantinos Constantinou , Madappa Prakash

In this work we construct a multiderivative implicit-explicit (IMEX) scheme for a class of stiff ordinary differential equations. Our solver is high-order accurate and has an asymptotic preserving (AP) property. The proposed method is based…

数值分析 · 数学 2020-01-24 Jochen Schütz , David C. Seal

We are interested in this work in the numerical resolution of the Quantum Liouville-BGK equation, which arises in the derivation of quantum hydrodynamical models from first principles. Such models are often obtained in some asymptotic…

偏微分方程分析 · 数学 2025-04-21 Romain Duboscq , Olivier Pinaud

In this paper, we study a hyperbolic-parabolic coupled system arising in nonlinear three-dimensional thermoelasticity. We establish the global well-posedness and asymptotic behavior of solutions. Our main result shows that, a thermoelastic…

偏微分方程分析 · 数学 2026-03-11 Chuang Ma , Bin Guo

In this work, we design and analyze a novel, provably conditionally stable, weakly coupled partitioned scheme to solve the conjugate heat transfer (CHT) problem. We consider a model CHT problem consisting of linear advection-diffusion and…

数值分析 · 数学 2026-02-23 Sarah Nataj , David C. Del Rey Fernández , David Brown , Rajeev Jaiman

In heat exchangers, an incompressible fluid is heated initially and cooled at the boundary. The goal is to transfer the heat to the boundary as efficiently as possible. In this paper we study a related steady version of this problem where a…

偏微分方程分析 · 数学 2023-03-15 Gautam Iyer , Truong-Son Van

We describe a general radiative equilibrium and temperature correction procedure for use in Monte Carlo radiation transfer codes with sources of temperature-independent opacity, such as astrophysical dust. The technique utilizes the fact…

天体物理学 · 物理学 2010-04-08 J. E. Bjorkman , Kenneth Wood

By coupling the asymmetric three-terminal mesoscopic dielectric system with a temperature probe, at low temperature, the ballistic heat flux flow through the other two asymmetric terminals in the nonlinear response regime is studied based…

介观与纳米尺度物理 · 物理学 2010-10-27 Yi Ming , Zhe Xian Wang , Ze Jun Ding , Hui Min Li

Many questions in physical cosmology regarding the thermal and ionization history of the intergalactic medium are now successfully studied with the help of cosmological hydrodynamical simulations. Here we present a numerical method that…

天体物理学 · 物理学 2009-10-31 Tom Abel , Michael L. Norman , Piero Madau

We present a mathematical analysis of the asymptotic preserving scheme proposed in [M. Lemou and L. Mieussens, SIAM J. Sci. Comput., 31, pp. 334-368, 2008] for linear transport equations in kinetic and diffusive regimes. We prove that the…

数值分析 · 数学 2009-10-06 Jian-Guo Liu , Luc Mieussens

Infrared (IR)-transparent passive radiative cooling (PRC) enables non-contact thermal management by regulating radiative heat exchange without direct attachment to the cooling object. While asymmetric IR transmission at a specific incidence…

计算物理 · 物理学 2026-02-06 Junwoo Gim , Jun Heo , Weng Cho Chew , Dong-Yeop Na

We consider the iterative solution of anisotropic radiative transfer problems using residual minimization over suitable subspaces. We show convergence of the resulting iteration using Hilbert space norms, which allows us to obtain…

数值分析 · 数学 2025-05-28 Riccardo Bardin , Matthias Schlottbom