A Characteristic-based Numerical Simulation of Water-titanium Dioxide Nano-fluid in Closed Domains
- سال انتشار: 1399
- محل انتشار: ماهنامه بین المللی مهندسی، دوره: 33، شماره: 1
- کد COI اختصاصی: JR_IJE-33-1_018
- زبان مقاله: انگلیسی
- تعداد مشاهده: 332
نویسندگان
Department of Mechanical Engineering, University of Bonab, Bonab, Iran
School of Mechanical Engineering, University of Tabriz, Tabriz, Iran
School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
چکیده
A new characteristic-based method is developed and used for solving the mixed and forced convection problems. The nano-fluid flow with heat transfer is simulated with a novel characteristic-based scheme in closed domains with different aspect ratios. For this purpose, a FORTRAN code has been written and developed. Water as a pure fluid and water-titanium dioxide as a nano-fluid were considered. The governing equations are solved by the finite volume utilizing a characteristic-based scheme for the convective fluxes. The simulation is done at Grashof numbers from 100 to 104, Reynolds numbers from 100 to 1000, and volume fractions of nano-particles from 0% to 10%. Streamlines, isotherms, friction factor, and mean Nusselt number are obtained in various conditions. The convective behavior of nano-fluid is explored as a function of several parameters, such as Grashof number and geometrical parameters. Results indicate that the mean Nusselt number for the nanofluid is up to 23% more than that of pure water.کلیدواژه ها
Titanium dioxide, nano-fluid, Nusselt Number, friction factor, Numerical methodاطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.