Acta mathematica scientia,Series A ›› 2009, Vol. 29 ›› Issue (4): 858-872.

• Articles • Previous Articles     Next Articles

The Modified Characteristic Finite Difference Fractional Steps Method for Nonlinear Coupled System of Multilayer Fluid Dynamics in Porous Media

  

  1. (Institute of Mathematics, Shandong University, Jinan 250100)
  • Received:2007-12-22 Revised:2009-03-07 Online:2009-08-25 Published:2009-08-25
  • Supported by:

    国家重点基础研究专项经费(G19990328)、国家攻关(20050200069)、国家自然科学基金(10771124, 10372052)和国家教育部博士点基金(20030422047)资助

Abstract:

For nonlinear coupled system of multilayer fluid dynamics in porous media, the modified characteristic finite difference fractional steps method applicable to parallel arithmetic is put forward, and two-dimensional and three-dimensional schemes are used to form a complete set. Some techniques, such as calculus of variations, energy method, piecewise biquadratic interpolation, multiplicative commutation rule of difference operators, decomposition of high order difference operators and prior estimates are adopted. Optimal order estimates in L2 norm are derived to determine the error of the approximate solution. This method has already been applied to the numerical simulation of multilayer fluid dynamics in porous media. Thus the author has thoroughly and completely solved the well-known problem.

Key words: Nonlinear coupled system, Multilayer fluid dynamics in porous media, Characteristic finite difference, Fractional steps, Convergence

CLC Number: 

  • 65N12
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