Numerical Investigation of Mixed Convection in Two-Sided Lid-Driven Square Cavity with Wavy Walls

  • سال انتشار: 1393
  • محل انتشار: بیست و دومین کنفرانس سالانه بین المللی مهندسی مکانیک
  • کد COI اختصاصی: ISME22_388
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 1318
دانلود فایل این مقاله

نویسندگان

H Aminfar

Department of Mechanical Engineering, University of Tabriz

A Razzaghi

Department of Mechanical Engineering, University of Tabriz

R Maroofi Azar

Department of Mechanical Engineering, University of Tabriz

H Almohammadi

Department of Mechanical Engineering, University of Tabriz

چکیده

This paper reviews numerical investigation of steady states, mixed convection flow within a two-sided lid driven cavity with wavy adiabatic side walls and moving both top hot wall and bottom cold wall. Constant Grashohf number (Gr=10^4) has induced constant wall temperatures while varying Richardson number (Ri=0.1, Ri=1, and Ri=10) has generated different streamlines and temperature patterns in which we could deduce the fact that heat transfer rate is higher in force convection dominant regime (Ri< 1). In addition, we have investigated cavities with wavy walls in force convection dominant regime (Ri < 1) with different pitch numbers and different pick numbers and have perceived as pitch number decreases, recirculation of flow become more arduous and heat transfer rate decreases. Finally, we have considered cavities with wavy walls with different pitch numbers and different pick numbers at Ri> =1. What we have observed, is increasing of Nusselt number by decreasing of pitch numbers and decreasing of pick numbers. We also have plotted vertical velocity profile along the cavity at horizontal midline for first case and Nusselt number variation along the cavity on hot wall for each case.

کلیدواژه ها

Lid-driven cavity, Mixed convection, Wavy walls, Average Nusselt number

مقالات مرتبط جدید

اطلاعات 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.