{"title":"Modelling variable density groundwater flow","authors":"C.P. Jackson, S.P. Watson","doi":"10.1016/S1464-1909(01)00015-6","DOIUrl":null,"url":null,"abstract":"<div><p>Highly saline groundwater may be found at depth. Large variations in salinity can have considerable effect on the groundwater flow. The effects may need to be addressed in modelling groundwater flow for an assessment of the performance of an underground repository for radioactive waste. Issues relating to the modelling of variable-density groundwater flow are discussed. It is shown that the position as well as the width of transition zones between fresh and saline groundwaters may depend on the transverse dispersion. Therefore, accurate modelling requires the use of numerical methods that do not introduce excessive dispersion. The equations that characterise variable density flow with large variations in salinity are highly non-linear, and it is shown that they may have multiple, steady-state solutions in cases of practical interest.</p></div>","PeriodicalId":101025,"journal":{"name":"Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere","volume":"26 4","pages":"Pages 333-336"},"PeriodicalIF":0.0000,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1909(01)00015-6","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1464190901000156","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
Highly saline groundwater may be found at depth. Large variations in salinity can have considerable effect on the groundwater flow. The effects may need to be addressed in modelling groundwater flow for an assessment of the performance of an underground repository for radioactive waste. Issues relating to the modelling of variable-density groundwater flow are discussed. It is shown that the position as well as the width of transition zones between fresh and saline groundwaters may depend on the transverse dispersion. Therefore, accurate modelling requires the use of numerical methods that do not introduce excessive dispersion. The equations that characterise variable density flow with large variations in salinity are highly non-linear, and it is shown that they may have multiple, steady-state solutions in cases of practical interest.
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