Title of article
Nano-structurecomputationwithcoupledmomentumphaseorderingkineticsmodelsOriginalResearchArticle
Author/Authors
V.E.Badalassi، نويسنده , , S.Banerjee، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
9
From page
1107
To page
1115
Abstract
Whenasystemsuchasabinaryliquidiscooledrapidlyfromahomogeneousphaseintoatwo-phaseregion,domainsofthetwoequilibriumphasesformandgrow(coarsen)withtime.Intheabsenceofexternalforcing,suchasbygravityoranimposedshearflow,adynamical-scalingregimeemergesinwhichthedomainmorphologyisstatisticallyself-similaratdifferenttimes,withanoveralllength-scale(coarseningscale)thatgrowswithtime.Inthefirstpartofthepaper,thescalingphenomenologywillbereviewedandthetime-dependenceofthecoarseningscalewillbediscussedinthecontextofanumberofdifferentphysicalsystemsandscalingregimes.Inthesecondpart,theinfluenceofexternaldrives,inparticulargravityandshearflow,willbeaddressedandrecentresultsreviewed.Inparticular,wefindthatmultiplelengthscalesemergesinceintheshearcasethesystemcoarsensmorerapidlyinthemeanflowdirectionwhileinthegravitycasethecoarseningismorerapidinthedirectionofthegravity.Wecharacterizedthescalesbycalculationsoftheanisotropicgrowthlaws.Furtherfortheshearweshowthatitispossibletocontroltheasymptoticmorphologyofthephaseseparationinordertoobtaineitherlamellaeorcylindricalstructuresandpotentiallycreateforexamplenano-conductivewiresormaterialswithparticularopticalproperties.Investigatinggravitationaleffectswefindthatscalinglawsaresignificantlyaffectedevenforsmalldensitymismatchorlowgravity,andthegrowthmechanismhassomesimilaritiestothesedimentationprocess.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2005
Journal title
Nuclear Engineering and Design Eslah
Record number
894910
Link To Document