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论文类型： 期刊论文

发表时间： 2001-10-01

发表刊物： JOURNAL OF ENVIRONMENTAL SCIENCES

收录刊物： SCIE、CSCD

卷号： 13

期号： 4

页面范围： 444-448

ISSN号： 1001-0742

关键字： pollutants; advecton-diffusion equation; high-order scheme; numerical modelling

摘要： A high-order splitting scheme for the advection-diffusion equation of pollutants is proposed in this paper. The multidimensional advection-diffusion equation is splitted into several one-dimensional equations that are solved by the scheme. Only three spatial grid points are needed in each direction and the scheme has fourth-order spatial accuracy. Several typically pure advection and advection-diffusion problems are simulated. Numerical results show that the accuracy of the scheme is much higher than that of the classical schemes and the scheme can he efficiently solved with little programming effort.