Local Heat Transfer Coefficients in a Rectangular Duct with Plate Blockages of Variable Stream Wise Spacing
محل انتشار: ماهنامه بین المللی مهندسی، دوره: 7، شماره: 1
سال انتشار: 1373
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 158
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شناسه ملی سند علمی:
JR_IJE-7-1_005
تاریخ نمایه سازی: 19 اسفند 1400
چکیده مقاله:
An experimental investigation is conducted to determine the effect of repeated-plate blockages of variable streamwise spacing on heat transfer characteristics of turbulent flow in rectangular ducts. The plates are attached to the upper and lower walls in a staggered arrangement. The experiments are carried out by mass transfer and the analogy between heat and mass transfer provides the necessary link between the two processes. The study encompasses both the developing and the periodically fullydeveloped portions of the duct, and the axial distribution of the local transfer coefficients are discussed. The principal variables of the problem are Reynolds number Re, plate height h. and plate streamwise spacing L. The range of Re, h/H (H= duct height), and L/H considered in this study are ۳۰۰۰-۵۰۰۰۰, ۰-۰.۵, and ۱-۷. The measurements extended downstream to about ۱۳ duct hydraulic diameter.
کلیدواژه ها:
نویسندگان
I. Mirzaee
Mechanical Engineering, Isfahan University of Technology
Majid Molki
Mechanical Engineering, Southern Illinois University