A global strategy for solving reactive transport equations

A global strategy for solving reactive transport equations
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DOI:
10.1016/j.jcp.2009.05.044
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发表时间:
2009-09
期刊:
J. Comput. Phys.
影响因子:
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通讯作者:
C. Dieuleveult;J. Erhel;M. Kern
C. Dieuleveult;J. Erhel;M. Kern
中科院分区:
其他
文献类型:
--
作者:
C. Dieuleveult;J. Erhel;M. Kern

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反应输运模型是复杂的非线性偏微分代数方程(PDAE),耦合的传输引擎与地球化学算子。我们提出了一个高效和强大的全球数值方法,线和微分代数方程(DAE)求解器的方法的基础上,结合牛顿法使用一个强大的稀疏线性求解器。数值实验验证了该方法的有效性。我们还提出了一个统一的框架来描述经典的方法,如顺序非迭代方法,顺序迭代方法,直接替代方法,并比较他们与我们的整体方法。
Reactive transport models are complex nonlinear Partial Differential Algebraic Equations (PDAE), coupling the transport engine with the geochemical operator. We propose an efficient and robust global numerical method, based on a method of lines and Differential Algebraic Equations (DAE) solvers, combined with a Newton method using a powerful sparse linear solver. Numerical experiments show the performances of the method. We also propose a unified framework to describe classical methods such as Sequential Non-Iterative Approach, Sequential Iterative Approach, Direct Substitution Approach and compare them with our global method.