?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%2F349%2F&rft.title=Modelling+mass+transfer+in+a+rotating+disk+reaction+vessel&rft.creator=Bohun%2C+C.+Sean&rft.subject=Energy+and+utilities&rft.subject=Materials&rft.description=A+rotating+disk+apparatus+is+commonly+used+to+study+kinetics+of+heterogeneous+reactions+such+as+calcite+dissolution+by+acid.+The+apparatus+consists+of+a+rock+disk+attached+to+a+rotating+shaft%3B+the+rock+is+submerged+in+a+solution+of+reactant+which+is+transferred+to+the+disk+surface+by+convection+and+molecular+diffusion.+The+former+due+to+the+rotation+of+the+disk%2C+and+the+latter+due+to+the+concentration+gradient+of+the+reactant+between+the+bulk+fluid+and+the+rock+surface.%0D%0A%0D%0ASchlumberger+is+interested+in+determining+how+to+use+the+rotating+disk+experiments+to+extract+parameters+that+govern+the+reaction+rate+between+the+acid+and+carbonate+rock.+For+mass+transfer+limited+reactions+these+include+(i)+the+diffusion+rate+across+the+boundary+layer%2C+and+(ii)+the+thickness+of+the+boundary+layer.+For+a+reaction+that+is+surface+limited%2C+(i)+the+reaction+rate+and%2C+(ii)+the+reaction+order+are+of+paramount+interest.%0D%0A%0D%0AThe+Study+Group+began+by+reanalyzing+the+solution+by+Levitch+coupled+with+numerical+solutions+of+the+flow+in+the+hope+that+it+would+lead+to+a+deeper+understanding+of+the+fluid+dynamics+in+the+neighbourhood+of+the+rock.+In+particular%2C+how+the+fluid+flow+changes+as+the+Reynolds+number+is+increased+and+how+this+might+indicate+the+most+ideal+location+to+measure+the+calcium+in+the+reaction+vessel.%0D%0A%0D%0AThe+modelling+looked+not+only+at+the+coupling+of+the+fluid+flow+with+the+diffusion+equation+for+the+ions+but+also+a+preliminary+Stefan+problem+for+the+dissolving+rock.&rft.date=2011&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%2F349%2F1%2FSLB-disk.pdf&rft.identifier=++Bohun%2C+C.+Sean++(2011)+Modelling+mass+transfer+in+a+rotating+disk+reaction+vessel.++%5BStudy+Group+Report%5D+++++