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Heat transfer and pressure drop characteristics of nanofluid in unsteady squeezing flow between rotating porous disks considering the effects of thermophoresis and Brownian motion

عنوان مقاله: Heat transfer and pressure drop characteristics of nanofluid in unsteady squeezing flow between rotating porous disks considering the effects of thermophoresis and Brownian motion
شناسه ملی مقاله: CMAES01_132
منتشر شده در اولین کنفرانس پیشرفتهای نوین در حوزه انرژی در سال 1394
مشخصات نویسندگان مقاله:

Hossein Tamim - Mechanical Engineering Department, Energy Institute of Higher Education, Saveh, Iran
Mohammad Hassan Mirzaie - Islamic Azad University, Saveh Branch, Saveh, Iran
Reza Alayi - Mechanical Engineering Department, Energy Institute of Higher Education, Saveh, Iran

خلاصه مقاله:
In this study, the unsteady three dimensional nanofluid flow, heat and mass transfer in a rotatingsystem in the presence of an externally applied uniform vertical magnetic field is investigated. This studyhas different applications in rotating magneto-hydrodynamic (MHD) energy generators for new spacesystems and also thermal conversion mechanisms for nuclear propulsion space vehicles. The importanteffects of Brownian motion and thermophoresis have been included in the model of nanofluid. Thegoverning equations are non-dimensionalized using geometrical and physical flow field-dependentparameters. The velocity profiles in radial, tangential and axial directions, pressure gradient, temperatureand concentration distributions are obtained. The effects of different governing parameters namely:Reynolds number, rotation parameter, magnetic parameter, Prandtl number, Schmidt number,thermophoretic parameter and Brownian motion parameter on all nanofluid velocity components,temperature and concentration distributions, pressure gradient, Nusselt number and Sherwood number aredisplayed through tables and graphs and the results are discussed in detail.

کلمات کلیدی:
Nanofluid; Two-phase model; pressure drop; Rotating disk; Squeezing flow; Magnetohydrodynamic (MHD); Heattransfer

صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/531317/