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ABSTRACT
This paper presents an experimental investigation of heat transfer and friction factor in a rectangular duct with discrete V-rib integrated with staggered elements. The Reynolds number (Re) of 3000–12,000, ratio of staggered element size to rib height (r/e) of 2–5.5, relative roughness pitch (p/e) of 12, relative roughness height (e/Dh) of 0.045, flow angle of attack (α) of 60°, relative gap width (g/e) of 1, relative staggered element position (p’/p) of 0.65 and number of gaps (Ng) of 6. The maximum augmentation in Stanton number is 1.90 times over the smooth duct and maximum thermal efficiency is obtained 86% corresponding to ratio of staggered element size to rib height (r/e) of 3.5.
Disclosure Statement
No potential conflict of interest was reported by the authors.
Additional information
Notes on contributors
Sumer Singh Patel
Sumer Singh Patel is a Ph.D. research scholar in the Department of Mechanical Engineering of Maulana Azad National Institute of Technology Bhopal.
Atul Lanjewar
Dr. Atul Lanjewar working as Associate Professor in the Department of Mechanical Engineering of Maulana Azad National Institute of Technology Bhopal.