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Dimension splitting method for the three dimensional rotating Navier-Stokes equations

Dimension splitting method for the three dimensional rotating Navier-Stokes equations In this paper, we propose a dimensional splitting method for the three dimensional (3D) rotating Navier-Stokes equations. Assume that the domain is a channel bounded by two surfaces $\Im $ and is decomposed by a series of surfaces $\Im _i $ into several sub-domains, which are called the layers of the flow. Every interface $\Im _i $ between two sub-domains shares the same geometry. After establishing a semi-geodesic coordinate (S-coordinate) system based on $\Im _i $ , Navier-Stoke equations in this coordinate can be expressed as the sum of two operators, of which one is called the membrane operator defined on the tangent space on $\Im _i $ , another one is called the bending operator taking value in the normal space on $\Im _i $ . Then the derivatives of velocity with respect to the normal direction of the surface are approximated by the Euler central difference, and an approximate form of Navier-Stokes equations on the surface $\Im _i $ is obtained, which is called the two-dimensional three-component (2D–3C) Navier-Stokes equations on a two dimensional manifold. Solving these equations by alternate iteration, an approximate solution to the original 3D Navier-Stokes equations is obtained. In addition, the proof of the existence of solutions to 2D–3C Navier-Stokes equations is provided, and some approximate methods for solving 2D–3C Navier-Stokes equations are presented. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Mathematicae Applicatae Sinica Springer Journals

Dimension splitting method for the three dimensional rotating Navier-Stokes equations

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References (18)

Publisher
Springer Journals
Copyright
Copyright © 2012 by Institute of Applied Mathematics, Academy of Mathematics and System Sciences, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg
Subject
Mathematics; Theoretical, Mathematical and Computational Physics; Applications of Mathematics; Math Applications in Computer Science
ISSN
0168-9673
eISSN
1618-3932
DOI
10.1007/s10255-012-0161-7
Publisher site
See Article on Publisher Site

Abstract

In this paper, we propose a dimensional splitting method for the three dimensional (3D) rotating Navier-Stokes equations. Assume that the domain is a channel bounded by two surfaces $\Im $ and is decomposed by a series of surfaces $\Im _i $ into several sub-domains, which are called the layers of the flow. Every interface $\Im _i $ between two sub-domains shares the same geometry. After establishing a semi-geodesic coordinate (S-coordinate) system based on $\Im _i $ , Navier-Stoke equations in this coordinate can be expressed as the sum of two operators, of which one is called the membrane operator defined on the tangent space on $\Im _i $ , another one is called the bending operator taking value in the normal space on $\Im _i $ . Then the derivatives of velocity with respect to the normal direction of the surface are approximated by the Euler central difference, and an approximate form of Navier-Stokes equations on the surface $\Im _i $ is obtained, which is called the two-dimensional three-component (2D–3C) Navier-Stokes equations on a two dimensional manifold. Solving these equations by alternate iteration, an approximate solution to the original 3D Navier-Stokes equations is obtained. In addition, the proof of the existence of solutions to 2D–3C Navier-Stokes equations is provided, and some approximate methods for solving 2D–3C Navier-Stokes equations are presented.

Journal

Acta Mathematicae Applicatae SinicaSpringer Journals

Published: Jun 10, 2012

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