一维非饱和土壤溶质运移的有限体积法数值模拟-水土保持研究.pdfVIP

15 4 Vol. 15, No.4 2008 8 Research of Soil and Water Conservation Aug. , 2008 1 2 3 吕岁菊, 乔 英 , 刘国林 ( 1. , 750021; 2. , 750021; 3. , 756300) : , , , , : ; ; ; ; : S152. 7 :A : 2008) Numeri cal Simulati on f or Onedimensi onal Unsaturated Soil Solute Transport 1 2 3 LSuiju , QIAO Ying , LIU Guolin ( 1. R esearch Institute of N umerical Comp utation and Engineering Ap p lication, the North Univ ersity f or Ethics. Yinchuan 750021, China; 2. College of I nf ormation and Comp utational cience, the N orth Universi ty f or Ethics. Yinchuan 750021, China; 3. Work tation of oil and Water Conserv ation f or Waterboard , L ong de, N ingx ia 756300, China) Abstract: Onedimensional solute t ransport model is numerically solved w ith finite volume method in unsaturated soils. The dy namic procedures of soil w ater movement and solute transport are simulated. The rationality and validity of simulated results have also been verif ied by experimented data. Through comparing finite volume method ( FVM) w ith finite difference method ( FDM) , it show s that FVM can avoid the phenomenon of numerical disperse and numerical shake w hich frequently happens in FDM. Therefore,for simulat ing soil w ater and solut e movement ,finite volume method is a good and practical numerical method in engineering applicat ion. Key words:f initevolume met hod; finite difference met hod; solute transport; numerical simulation; numerical model , , , , ,