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Numerical simulation of aqueous-phase atmospheric models : use of a non-autonomous rosenbrock method

Abstract : We present in this article an efficient numerical solver for the time integration of atmospheric multiphase chemical kinetics. This solver is based on a second-order Rosenbrock scheme, that has been proposed by Verwer et al. (SIAM J. Sci. Comput. 20 (4) (1999) 1456) for gas-phase chemical kinetics. We show that the stiff time dependence of cloudy events (through liquid water content) has to be solved by the numerical scheme and a non-autonomous version has to be used. We benchmark the non-autonomous ROS2 scheme with the classical LSODE solver for two kinetic schemes. For detailed schemes such as RADM2, the speed-up is of magnitude 5 for the same accuracy.
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https://hal.inria.fr/inria-00532762
Contributor : Brigitte Briot <>
Submitted on : Thursday, November 4, 2010 - 1:44:23 PM
Last modification on : Friday, October 4, 2019 - 1:39:55 AM

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Rafik Djouad, Bruno Sportisse, Nicole Audiffren. Numerical simulation of aqueous-phase atmospheric models : use of a non-autonomous rosenbrock method. Atmospheric environment, Elsevier, 2002, 36 (5), pp.873-879. ⟨10.1016/S1352-2310(01)00497-6⟩. ⟨inria-00532762⟩

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