A stabilized finite element method for the Rayleigh–Bénard equations with infinite Prandtl number in a spherical shell

A stabilized finite element method for the Rayleigh–Bénard equations with infinite Prandtl number in a spherical shell
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球壳内普朗特数无限的瑞利-贝纳德方程的稳定有限元方法

DOI:
10.1016/s0045-7825(00)00209-7
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发表时间:
2000
影响因子:
7.2
通讯作者:
A. Suzuki
A. Suzuki
中科院分区:
工程技术1区
文献类型:
--
作者:
M. Tabata;A. Suzuki

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对无限普朗特数Boussinesq流体在球壳中的热对流问题建立了一种有限元格式,并进行了分析。这个问题是地球地幔运动的数学模型,一直是地球物理学家感兴趣的话题。它由具有无限普朗特数的Rayleigh-Bénard方程描述,即Stokes方程和对流扩散方程与浮力和对流项耦合的系统。本文提出了一种P1/P1/P1单元的稳定化有限元格式,并给出了误差估计。所得到的理论收敛阶也被数值结果所承认。另一个数值结果显示作为地球地幔运动模拟的一个例子。
A finite element scheme is developed and analyzed for a thermal convection problem of Boussinesq fluid with infinite Prandtl number in a spherical shell. This problem is a mathematical model of the Earth's mantle movement and has been a topic of interest for geophysicists. It is described by the Rayleigh–Bénard equations with infinite Prandtl number, that is, a system of the Stokes equations and the convection–diffusion equation coupled with the buoyancy and the convection terms. A stabilized finite element scheme with P1/P1/P1 element is presented, and an error estimate is established. The obtained theoretical convergence order is also recognized by a numerical result. Another numerical result is shown as an example of the Earth's mantle movement simulation.
《极端条件下的XMCD研究——巡回电子系统中的磁相变——》(特邀)
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者:
H.;Maruyama
通讯作者: Maruyama