一维变密度溶质运移实验及参数推求  

Identification of hydrodynamic parameters based on one-dimensional variable density and solute transport numerical model

作　　者：马建良[1] 陈喜[1] 程勤波[2] 宋轩[2] 鲍振鑫[2] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]河海大学水文水资源学院,江苏南京210098

出　　处：《水资源保护》2008年第3期8-11,共4页Water Resources Protection

基　　金：国家自然科学基金(50679025);教育部新世纪优秀人才支持计划(NCET-04-0492);高等学校学科创新引智计划(B08048)

摘　　要：通过室内土柱注水实验,观测沙质土壤中氯离子浓度的变化过程。以变密度水流连续性方程、溶质运移方程和达西方程为基础,运用有限单元法和差分法对这3个方程进行联立求解,建立了一维变密度水流和溶质运移数值模型。利用实验数据反求变密度渗透系数、弥散系数等水动力参数。The concentration of chloride ions in sandy soil was observed through water-filling soil column tests in the laboratory. A one-dimensional numerical model for groundwater flow of variable density and solute transport was developed on the basis of equations of variable density groundwater flow and solute transport as well as Darey＇ s Law. The equations were solved using the finite element and finite difference methods. The hydrodynamic parameters for variable density flow, such as infiltration coefficients and dispersion coefficients, were calibrated against the observed data.

关 键 词：变密度水流 一维对流-弥散方程 土柱实验 海水入侵 

分 类 号：O351.2[理学—流体力学]