Acta mathematica scientia,Series B ›› 2011, Vol. 31 ›› Issue (3): 857-881.doi: 10.1016/S0252-9602(11)60282-8

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THE UPWIND FINITE DIFFERENCE METHOD FOR MOVING BOUNDARY VALUE PROBLEM OF COUPLED SYSTEM

 YUAN Yi-Rang   

  1. Institute of Mathematics, Shandong University, Jinan 250100, China
  • Received:2009-07-13 Revised:2009-11-16 Online:2011-05-20 Published:2011-05-20
  • Supported by:

    This work is supported by the Major State Basic Research Program of China (19990328), the National Tackling Key Problem Programs (20050200069), the National Natural Science Foundation of China (10771124; 10372052), the Doctorate Foundation of the Ministry of Education of China (20030422047), Shandong Provance Natural Science Foundation (2R2009AQ12), and the Independent Innovation Foundation of Shandong University (2010TS031).

Abstract:

Coupled system of multilayer dynamics of fluids in porous media is to describe the history of oil-gas transport and accumulation in basin evolution. It is of great value in rational evaluation of prospecting and exploiting oil-gas resources. The mathematical model can be described as a coupled system of nonlinear partial differential equations with moving boundary values. The upwind finite difference
schemes applicable to parallel arithmetic are put forward and two-dimensional and three-dimensional schemes are used to form a
complete set. Some techniques, such as change of variables, calculus of variations, multiplicative commutation rule of difference operators, decomposition of high order difference operators and prior estimates, are adopted. The estimates in l 2 norm are derived to determine the error in the approximate solution. This method was already   applied to the numerical simulation of migration-accumulation of oil resources.

Key words: multilayer coupled system, moving boundary values, upwind finite difference method, convergence, numerical simulation of energy sources

CLC Number: 

  • 65M06
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