The method of mixed volume element-characteristic mixed volume element and its numerical analysis for groundwater pollution in binary medium
作者: Yirang YuanMing CuiChangfeng LiTongjun Sun
作者单位: 1Institute of Mathematics, Shandong University, Jinan 250100, China
2School of Economics, Shandong University, Jinan 250100, China
刊名: Applied Mathematics and Computation, 2019, Vol.362
来源数据库: Elsevier Journal
DOI: 10.1016/j.amc.2019.06.050
关键词: Ground water pollution of binary mediumMixed volume element-characteristic Mixed volume elementLocal conservation of massSecond order l 2 error estimateNumerical computation
原始语种摘要: Abstract(#br)Groundwater pollution is an important topic of environmental sciences. Since the geologic structure is usually of crack-hole binary medium, its mathematical model is formulated by a nonlinear initial-boundary value problem of partial differential equations. The pressure is defined by an elliptic flow equation. The concentration of pollution is defined by a convection-diffusion equation. The surface adsorption concentration is defined by a first-order ordinary differential equation. The transport pressure appears within the concentration, and Darcy velocity controls the concentration. The flow equation is solved by the conservative mixed volume element and the computational accuracy of Darcy velocity is improved by one order. The mixed volume element with the characteristics...
全文获取路径: Elsevier  (合作)
分享到:
来源刊物:
影响因子:1.349 (2012)

×
关键词翻译
关键词翻译
  • element 元素
  • binary 二元的
  • computational 计算的
  • volume 体积
  • approximate 近似的
  • medium 介质
  • characteristic 特有的
  • mixed 混合的
  • concentration 浓度
  • pollution 污染