Al2O3 Nano-Fluid Flow and Heat Transfer near an infinite Rotating Porous Disk in the presence of Magnetic Field
- سال انتشار: 1392
- محل انتشار: اولین همایش ملی نانو تکنولوژی مزایا و کاربردها
- کد COI اختصاصی: NANOO01_028
- زبان مقاله: انگلیسی
- تعداد مشاهده: 910
نویسندگان
Professor, Department of Mechanical Engineering, Amirkabir University of Technology
PhD student, Department of Mechanical Engineering, Amirkabir University of Technology
BSc, Department of Chemistry, Faculty of Sciences, Zanjan Branch, Islamic Azad University.
چکیده
This paper studied the effect of an axial magnetic field on the nano-fluid flow and heat transfer consisting of aluminum oxide Al2O3 nano-particles with water base-fluid above a porous rotating disk. Numerical solution of the nonlinear governing equations including continuity, momentum and energy equations is obtained. In order to overcome this task, the governing partial differential equations with the corresponding boundary conditions have been simplified using a similarity solution to the system of ordinary differential equations with the appropriate boundary conditions which were solved using a shooting method with fourth-order Runge-Kutta algorithm. The effects of magnetic field strengths on the flow and heat transfer parameters have been fully considered. It is seen that the magnetic field has suppressible effect on the velocity field and heat transfer. Larger magnetic field strength causes a smaller Nusselt number and radial skin coefficient, but larger tangential skin friction coefficient. Effects of volume fraction of nano-particles, injection (suction) velocity have been also considered. It is also seen that the effect of magnetic field for larger values of volume fractions become more significantکلیدواژه ها
nano-fluid, porous rotating disk, similarity solution, Runge-Kutta methodاطلاعات بیشتر در مورد COI
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