6870

6412

كارشناسي ارشد

شيمي فيزيك

اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي

1390

پانزده، 108ص.: مصور، جدول، نمودار

ص.ع. به فارسي و انگليسي

عزت كشاورزي

31/4/91

بيژن نجفي، حسين فرخ پور

1396/09/14

كتابنامه

شيمي

شيمي

ID6412

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Investigation of Common Compressibility and Bulk Modulus Regularities Tait Murnaghan Equation and Pressure Temperature Isochores for Confined Fluids in Nanoslit and The Regularity between Viscosity and Surface Tension in Nanofluids Sediqeh Rabiei jildani rabiei sediqeh@yahoo com Date of Submission 2012 03 03 Department of Chemistry Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisor Prof Ezat Keshavarzi keshavrz@cc iut ac irAbstract The purpose of this study is to investigate some bulk known regularities for confined fluids andnanofluids The studied regularities included the common compression point common bulk modulus point bulk modulus pressure regularity Tiat Murnaghan equation and pressure temperature Isochores forfluids with Lenard Jones 12 6 potential in nanoslit and the regularity between viscosity and surface tensionfor nanofluids Our results show that the different isotherms of compressibility factor and also bulk modulusof confined fluid intersect each other versus average density of fluid in nanoslit pores called commoncompressibility and bulk modulus points At these points the compressibility and bulk modulus quantities areindependent of temperature Also we have showed that the values of the compressibility factor and bulkmodulus increase with temperature for all densities lower than the density of intersection points and decreasewith temperature for densities greater than the density of intersection In addition the effect some factorssuch as nanoslit size and fluid wall interactions evaluated in these regularities It has been also observedthat the common compression and common bulk modulus points still exist for nanoconfined fluids with anysize and fluid wall interactions It has been also observed that the values of the compressibility factor bulkmodulus and density at intersection points increase with nanoslit size and approaches to its macroscopicvalues at macroscopic limit But the effect of wall fluid attraction on these regularities is different byvariation of the wall fluid interactions from hard to Lenard Jones 10 4 3 potential the values ofcompressibility factor and density at common compression point decrease while the value of bulk modulusand density at common bulk modulus point increase We have also studied Tait Murnaghan equation fornanoconfined fluids It has been also found that the reduced Bulk Modulus is linear verses lateral pressure forany isotherms This regularity also exists for Lenard Jones fluid in nanoslit with any size and fluid wallinteractions The last studied regularity for confined fluids is the linear regularity between lateral pressureand temperature for any isochores for Lenard Jones fluid in nanoslit with different size and wall fluidinteractions In overall our studied show that these regularities is related to the intrinsic properties of fluids andintroduction of wall only changes the thermodynamic states at which the regularities happened Finally the regularities between viscosity and surface tension in nanofluids have been examined Theseregularities include a linear regularity between ratio of surface tension to viscosity verses root of temperatureand also a linear regularity between surface tension logarithm and inverse viscosity Keywords 1 confined fluids 2 nanofluids 3 common compression point 4 common bulk Modulus point5 viscosity 6 surface tension

عزت كشاورزي

بيژن نجفي، حسين فرخ پور