教授 博士生导师 硕士生导师
性别: 男
毕业院校: 清华大学
所在单位: 建设工程学院
电子邮箱: qiudh@dlut.edu.cn
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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.