中文
相关论文

相关论文: A ``horizontal" hyper--diffusion $3-D$ thermocline…

200 篇论文

We consider a Keller-Segel model with non-linear porous medium type diffusion and nonlocal attractive power law interaction, focusing on potentials that are less singular than Newtonian interaction. Here, the nonlinear diffusion is chosen…

偏微分方程分析 · 数学 2023-06-30 Shen Bian , Jiale Bu

We develop a 3D Eulerian model to study the transport and distribution of microplastics in the global ocean. Among other benefits that will be discussed in the paper, one unique feature of our model is that it takes into consideration the…

大气与海洋物理 · 物理学 2024-11-22 Zih-En Tseng , Yue Wu , Dimitris Menemenlis , Guangyao Wang , Chris Ruf , Yulin Pan

We formulate the the problem of persistent diffusion in three dimensions from the perspective of the Frenet--Serret equations. In contrast to one and two dimensional systems, in three dimensions persistent diffusion is, in general, a third…

软凝聚态物质 · 物理学 2015-02-18 Hernán Larralde , François Leyvraz

This paper is concerned with quasilinear parabolic reaction-diffusion-advection systems on extended domains. Frameworks for well-posedness in Hilbert spaces and spaces of continuous functions are presented, based on known results using…

动力系统 · 数学 2013-05-17 Martin Meyries , Jens D. M. Rademacher , Eric Siero

Global existence of very weak solutions to a non-local diffusion-advection-reaction equation is established under no-flux boundary conditions in higher dimensions. The equation features degenerate myopic diffusion and nonlocal adhesion and…

偏微分方程分析 · 数学 2024-10-18 Maria Eckardt , Anna Zhigun

Both core accretion and disk instability appear to be required as formation mechanisms in order to explain the entire range of giant planets found in extrasolar planetary systems. Disk instability is based on the formation of clumps in a…

天体物理学 · 物理学 2009-11-13 Alan P. Boss

In this paper, we obtain the global well-posedness and the asymptotic behavior of solution of non-resistive 2D MHD problem on the half space. We overcome the difficulty of zero spectrum gap by building the relationship between half space…

偏微分方程分析 · 数学 2024-01-22 Jiakun Jin , Yoshiyuki Kagei , Xiaoxia Ren , Lei Wang , Cuili Zhai

New exact spatially localized stationary solutions against the background of a zonal flow are found for the (3+1)-dimensional nonlinear non-dissipative quasi-geostrophic potential vorticity equation, which describes Rossby waves and…

流体动力学 · 物理学 2025-03-21 A. G. Kudryavtsev , N. N. Myagkov

A driven system of three species of particle diffusing on a ring is studied in detail. The dynamics is local and conserves the three densities. A simple argument suggesting that the model should phase separate and break the translational…

统计力学 · 物理学 2009-10-31 M. R. Evans , Y. Kafri , H. M. Koduvely , D. Mukamel

We investigate the long term behavior in terms of finite dimensional global and exponential attractors, as time goes to infinity, of solutions to a semilinear reaction-diffusion equation on non-smooth domains subject to nonlocal Robin…

动力系统 · 数学 2016-07-20 Ciprian G. Gal , Mahamadi Warma

The abundance and distribution of solids inside the Hill sphere are central to our understanding of the giant planet dichotomy. Here, we present a three-dimensional characterization of the dust density, mass flux, and mean opacities in the…

地球与行星天体物理 · 物理学 2022-04-13 Leonardo Krapp , Kaitlin M. Kratter , Andrew N. Youdin

We consider a thermodynamically consistent diffuse interface model describing two-phase flows of incompressible fluids in a non-isothermal setting. This model was recently introduced in a previous paper of ours, where we proved existence of…

偏微分方程分析 · 数学 2014-06-09 Michela Eleuteri , Elisabetta Rocca , Giulio Schimperna

Local climate information is crucial for impact assessment and decision-making, yet coarse global climate simulations cannot capture small-scale phenomena. Current statistical downscaling methods infer these phenomena as temporally…

机器学习 · 计算机科学 2025-09-24 Jonathan Schmidt , Luca Schmidt , Felix Strnad , Nicole Ludwig , Philipp Hennig

In this paper, we consider the initial-boundary value problem of the 3D primitive equations for planetary oceanic and atmospheric dynamics with only horizontal eddy viscosity in the horizontal momentum equations and only horizontal…

偏微分方程分析 · 数学 2014-06-10 Chongsheng Cao , Jinkai Li , Edriss S. Titi

In this paper we show the global well-posedness of solutions to a three-dimensional magnetohydrodynamical (MHD) model in porous media. Compared to the classical MHD equations, our system involves a nonlinear damping term in the momentum…

偏微分方程分析 · 数学 2018-06-07 Edriss S. Titi , Saber Trabelsi

Recent progresses in single particle tracking have shown evidences of non-Gaussian distribution of displacements in living cells, both near the cellular membrane and inside the cytoskeleton. A similar behavior has also been observed in…

生物物理 · 物理学 2019-05-30 Yann Lanoiselée , Denis S. Grebenkov

In this paper, we consider the initial boundary value problem for the three-dimensional viscous primitive equations of large-scale moist atmosphere which are used to describe the turbulent behavior of long-term weather prediction and…

偏微分方程分析 · 数学 2007-05-23 Boling Guo , Daiwen Huang

We prove existence and uniqueness of global solutions for a class of reaction-advection-anisotropic-diffusion systems whose reaction terms have a "triangular structure". We thus extend previous results to the case of time-space dependent…

偏微分方程分析 · 数学 2016-02-10 Dieter Bothe , André Fischer , Michel Pierre , Guillaume Rolland

We investigate a hydrodynamic system of Navier--Stokes/Cahn--Hilliard type, which describes the motion of a two-phase flow of two incompressible fluids with unmatched densities coupled with a soluble chemical species. Derived from Onsager's…

偏微分方程分析 · 数学 2025-12-30 Andrea Giorgini , Jingning He , Hao Wu

This is the second paper in a series where we build a self-consistent model to simulate the mass-loss process of a close-orbit magnetized giant exoplanet, so-called hot Jupiter (HJ). In this paper we generalize the hydrodynamic (HD) model…

地球与行星天体物理 · 物理学 2017-11-15 M. L. Khodachenko , I. F. Shaikhislamov , H. Lammer , P. A. Prokopov