?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F711%2F&rft.title=Mathematical+modelling+of+the+Germasogeia+aquifer&rft.creator=Benham%2C+Graham&rft.creator=Frolkovi%C4%8D%2C+Peter&rft.creator=Ivanov%2C+Tihomir&rft.creator=Mondal%2C+Raka&rft.creator=Mondal%2C+Sourav&rft.creator=Rottsch%C3%A4fer%2C+Vivi&rft.creator=Kaouri%2C+Katerina&rft.creator=Papageorgiou%2C+Demetrios&rft.creator=Nikolopoulos%2C+C.&rft.creator=Ockendon%2C+H.&rft.creator=Christodoulides%2C+Paul&rft.creator=Riseth%2C+Asbj%C3%B8rn+Nilsen&rft.creator=Lacey%2C+A.A.&rft.subject=Fluids&rft.description=Two+challenges+related+to+improving+the+management+of+the+Germasogeia+aquifer+were+presented+to+the+Study+Group+by+the+Cyprus+Water+Development+Department+(WDD)%2C+the+public+organisation+responsible+for+managing+the+wa-+ter+resources+in+Cyprus.+The++rst+challenge+was+how+to+optimally+recharge+the+aquifer+in+order+to+compensate+for+the+extraction+of+drinking+and+irrigation+water+whilst+preventing+sea+water+intrusion.+In+order+to+address+this+challenge+we+developed+model+for+the+water+in+the+aquifer.+Note+that+by+exploiting+the+long%2C+thin+nature+of+the+aquifer+we+only+develop+two-dimensional+models+in+this+work.+We++rst+develop+a+simple+model+based+on+Darcy++ows+for+porous+media+which+gives+the+water+table+height+for+given+dam+seepage+rate%2C+recharge+and+extraction+rates%3B+we+neglect+seawater+intrusion.+We+then+use+the+steady+version+of+this+model+to+develop+an+optimized+recharge+strategy+with+which+we+can+identify+minimal+recharge+required+for+a+desired+extracted+water+volume+such+that+the+minimum+prescribed+water+table+is+respected.+We+explore+4+di+erent+scenarios+and+we++nd+that+in+certain+cases+there+can+be+a+considerable+reduction+in+the+amount+of+recharged+water+compared+to+the+current+empirical+strategy+the+Water+Development+Department+is+employing%2C+where+water+is+recharged+and+extracted+in+equal+proportions.+To+incorporate+the+e+ects+of+seawater+intrusion%2C+which+can+be+very+damaging+to+the+water+quality%2C+we+next+develop+transient+two-+dimensional+models+of+saturated-unsaturated+groundwater++ow+and+solve+them+numerically+using+the+open+source+software+SUTRASuite+and+the+commercial+package+ANSYS+FLUENT%3B+the+position+of+the+water+table+and+the+seawater-+freshwater+interface+are+determined+for+various+extraction%2Frecharge+strategies.+Data+from+the+WDD+are+used+in+some+of+the+simulations.+The+second+important+challenge+we+were+asked+to+look+at+was+to+predict+the+transport+of+pollutants+in+the+aquifer+in+the+case+of+an+accidental+leakage.+An+advection-difusion+equation+for+the+contaminant+concentration+is+introduced+and+simulations+are+under-+taken+using+the+commercial+package+COMSOL.+The+concentration+pro+les+of+the+contaminant+are+studied+and+we++nd+that+the+e+ect+of+contamination+varies+depending+on+where+the+contamination+site+is%3B+the+closer+the+contamination+site+is+to+the+dam%2C+the+larger+the+extent+of+contamination+will+be.&rft.date=2017-07-31&rft.type=Study+Group+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F711%2F1%2FESGI125-aquifer-v2-1.pdf&rft.identifier=++Benham%2C+Graham+and+Frolkovi%C4%8D%2C+Peter+and+Ivanov%2C+Tihomir+and+Mondal%2C+Raka+and+Mondal%2C+Sourav+and+Rottsch%C3%A4fer%2C+Vivi+and+Kaouri%2C+Katerina+and+Papageorgiou%2C+Demetrios+and+Nikolopoulos%2C+C.+and+Ockendon%2C+H.+and+Christodoulides%2C+Paul+and+Riseth%2C+Asbj%C3%B8rn+Nilsen+and+Lacey%2C+A.A.++(2017)+Mathematical+modelling+of+the+Germasogeia+aquifer.++%5BStudy+Group+Report%5D+++++