Effect of Rotation on Natural Convection in Differentially Heated Rotating Enclosure by Numerical Simulation
سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 122
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شناسه ملی سند علمی:
JR_JAFM-9-3_025
تاریخ نمایه سازی: 3 بهمن 1400
چکیده مقاله:
Natural convection heat transfer in a two dimensional unsteady rotating differentially heated enclosure is studied numerically in this paper. The enclosure is filled with air and executes a steady counterclockwise rotation about the centre of the enclosure. A finite volume code on a staggered grid arrangement with TDMA algorithm is developed and employed to solve the governing equations subject to Boussinesq approximation. The numerical investigation is carried out for fixed Prandtl number equal to ۰.۷۱, Rayleigh number equal to۱.۱×〖۱۰〗^۵ while Taylors number vary from۵.۲×〖۱۰〗^۴ to ۳.۳×〖۱۰〗^۵and Rotational Rayleigh number from ۴.۹×〖۱۰〗^۲ to ۳.۱×〖۱۰〗^۳.Results reveal that there are considerable change in heat transfer rates beyond ۱۵ rpm. The effect of rotation on the Nusselt number for a given Rayleigh number is shown in the present work which is not normally indicated and discussed in the available literature
کلیدواژه ها:
نویسندگان
M. Narendra Kumar
Centre for Emerging Technologies, Jain University, Bangalore, Karnataka, ۵۶۲۱۱۲, India
G. Pundrika
Government Engineering College, Ramanagara, Karnataka, ۵۷۱۵۱۱, India
K. Rama Narasimha
Centre for Emerging Technologies, Jain University, Bangalore, Karnataka, ۵۶۲۱۱۲, India
K. N. Seetharamu
PES University, Bangalore,Karnataka, ۵۶۰۰۸۵, India