?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%2F605%2F&rft.title=Brewing+of+filter+coffee&rft.creator=Booth%2C+C.&rft.creator=Cummins%2C+C.&rft.creator=Dalwadi%2C+M.&rft.creator=Dellar%2C+P.&rft.creator=Devereux%2C+M.&rft.creator=Dewynne%2C+J.&rft.creator=Donohue%2C+J.&rft.creator=Duncan%2C+A.&rft.creator=Fitzmaurice%2C+F.&rft.creator=Gordon%2C+A.&rft.creator=Hennessy%2C+M.&rft.creator=Hinch%2C+J.&rft.creator=Hickey%2C+C.&rft.creator=Hjorth%2C+P.&rft.creator=Kyrke-Smith%2C+T.&rft.creator=Leahy%2C+D.&rft.creator=Lee%2C+W.&rft.creator=Lynch%2C+E.&rft.creator=Mercier%2C+O.&rft.creator=Miklavcic%2C+S.&rft.creator=Russell%2C+S.&rft.creator=Schwartz%2C+L.&rft.creator=Shozi%2C+B.F.&rft.creator=Swierczynski%2C+P.&rft.creator=Timoney%2C+C.&rft.creator=Tomczyk%2C+J.&rft.creator=Warneford%2C+E.&rft.subject=Food+and+Drink&rft.subject=Discrete&rft.subject=Fluids&rft.description=We+report+progress+on+mathematical+modelling+of+coffee+grounds+in+a+drip+filter+coffee+machine.+The+report+focuses+on+the+evolution+of+the+shape+of+the+bed+of+coffee+grounds+during+extraction+with+some+work+also+carried+out+on+the+chemistry+of+extraction.+This+work+was+sponsored+by+Philips+who+are+interested+in+understanding+an+observed+correlation+between+the+final+shape+of+the+coffee+grounds+and+the+quality+of+the+coffee.+We+used+experimental+data+gathered+by+Philips+and+ourselves+to+identify+regimes+in+the+coffee+brewing+process+and+relevant+regions+of+parameter+space.+Our+work+makes+it+clear+that+a+number+of+separate+processes+define+the+shape+of+the+coffee+bed+depending+on+the+values+of+the+parameters+involved+e.g.+the+size+of+the+grains+and+the+speed+of+fluid+flow+during+extraction.+We+began+work+on+constructing+mathematical+models+of+the+redistribution+of+the+coffee+grounds+specialised+to+each+region+and+on+a+model+of+extraction.+A+variety+of+analytic+and+numerical+tools+were+used.+Furthermore+our+research+has+progressed+far+enough+to+allow+us+to+begin+to+exploit+connections+between+this+problem+and+other+areas+of+science%2C+in+particular+the+areas+of+sedimentology+and+geomorphology%2C+where+the+processes+we+have+observed+in+coffee+brewing+have+been+studied.&rft.date=2012&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%2F605%2F1%2FPhilips_Research_ESGI_87_Report.pdf&rft.identifier=++Booth%2C+C.+and+Cummins%2C+C.+and+Dalwadi%2C+M.+and+Dellar%2C+P.+and+Devereux%2C+M.+and+Dewynne%2C+J.+and+Donohue%2C+J.+and+Duncan%2C+A.+and+Fitzmaurice%2C+F.+and+Gordon%2C+A.+and+Hennessy%2C+M.+and+Hinch%2C+J.+and+Hickey%2C+C.+and+Hjorth%2C+P.+and+Kyrke-Smith%2C+T.+and+Leahy%2C+D.+and+Lee%2C+W.+and+Lynch%2C+E.+and+Mercier%2C+O.+and+Miklavcic%2C+S.+and+Russell%2C+S.+and+Schwartz%2C+L.+and+Shozi%2C+B.F.+and+Swierczynski%2C+P.+and+Timoney%2C+C.+and+Tomczyk%2C+J.+and+Warneford%2C+E.++(2012)+Brewing+of+filter+coffee.++%5BStudy+Group+Report%5D+++++