Experimental investigation of heat transfer coefficient of vibrating horizontal cylinder

سال انتشار: 1386
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 2,098

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شناسه ملی سند علمی:

SCCE07_048

تاریخ نمایه سازی: 8 اردیبهشت 1386

چکیده مقاله:

The effect of vibration on natural heat transfer from a horizontal steel cylinder, 0.6 cm. in diameter and 23 cm. long, in air was investigated experimentally. Two different amplitudes of 1.9 and 3.2 cm at the same frequency were considered. The surface–air temperature difference varied from 25°C to 55°C.Vibration enhances the heat transfer rate. Increasing the vibration amplitude increases the heat transfer coefficient and this effect is more obvious in the higher value of amplitude of vibration. Vibration decreases the sensitivity of heat transfer coefficient to Grashof number.

نویسندگان

S Ajdari

Department of Chemical Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶, Iran

S Bakhshian

Department of Chemical Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶, Iran

M Nasr Esfahany

Department of Chemical Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶, Iran