{"refrec":{"BRefID":27547,"RR":"<b>Besselink, L.A.M.</b> (1989). PATRAC: development and application of a groundwater-quality model for variable density flow. <i>Natuurwet. Tijdschr. 70(1-4)</i>: 109-116","BEntID":27547,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>Natuurwet. Tijdschr. 70(1-4)</i>: 109-116","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Besselink, L.A.M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Besselink, L.A.M.","Englishabstract":"The aim of the study was the development of a groundwater-flow model for both fresh-/saline- and polluted-groundwater problems in a vertical profile. The model is a tool for the explanation and forecasting of transport phenomena in porous media. The characteristics of the model PARTRAC are : -the pressure field is calculated with the finite element metbod;-quasi-steady; -solute transport simulated by particle tracking; -concentrations defined per element; -molecular diffusion and hydrodynamic dispersion simulated with the random walk metbod; -first-order decay; -linear adsorption ; -density-dependent flow; -non-numerical dispersion; -interactive procedure for generation of an input-file witb a mesh generator. In this model the velocity field, which is of great importance for transport phenomena through porous media, is defined in a new manner. The model was calibrated with various theoretical test-cases, like:-intrusion of salt sea-water under a dike with a sheet pile;-upconing below a well pumping above an interface between fresh and salt groundwater;-the problem of initial interface between fresh and salt groundwater. Furthermore the model has been applied in a practical case. The possibilities of the PARTRAC-program will be discussed in this paper.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"PATRAC: development and application of a groundwater-quality model for variable density flow","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1989,"MonPub":null,"DateUpdate":"2022-03-15","DateCreate":"2002-09-25","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":27547,"PubliDate":1989,"Pagination":"109-116","XtraPublOfAnaID":null,"ISBN":null,"Volume":"70","Issue":"1-4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43436,"SerRR":"Natuurwetenschappelijk Tijdschrift. L. 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