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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/11182
Title: Detailed heat transfer investigation inside a rectangular duct with an array of ventilated rib turbulators
Authors: Sharma N.
Tariq, Andallib
Mishra, Manish
Published in: Lecture Notes in Mechanical Engineering
Abstract: Rib turbulators are extensively studied turbulence promoters employed in numerous industrial applications such as cooling of gas turbine blades and different electronic components, nuclear reactors and compact heat exchangers etc. for heat transfer augmentation. Some of the recent studies have shown the effect of altering rib profiles other than the square along with the effect of slit within it at fixed ratio of rib pitch to height (p/e). The present investigation focuses to explore the effects of p/e (p/e = 6, 8, 10, 12) on heat transfer augmentation and pressure penalty. Liquid crystal thermography (LCT) was applied to measure surface temperature distribution with temporal variation and ultimately the local heat transfer coefficients. Transient experiments have been conducted in an open-circuit, suction type air flow system at Reynolds number (Re) ranging from 9400 to 58850 (based on hydraulic diameter of the test section) and at a fixed value of rib height to channel hydraulic diameter ratio (e/Dh) of 0.125. The importance of current work is to appraise the potential impact of rib geometry especially the p/e ratio on the heat transfer enhancement corresponds to square solid and continuous converging slit rib configurations. It is expected, that the experimental data generated from this study will broaden the understanding of heat transfer from fundamental perspective and will serve as a benchmark dataset for validation of computational models. © Springer India 2017.
Citation: Lecture Notes in Mechanical Engineering (2017), (): 775-784
URI: https://doi.org/10.1007/978-81-322-2743-4_73
http://repository.iitr.ac.in/handle/123456789/11182
Issue Date: 2017
Publisher: Springer Heidelberg
Keywords: Flow control
Friction factor
Heat transfer enhancement
LCT
Rib turbulators
ISSN: 21954356
Author Scopus IDs: 57194590686
57119258700
55126794600
Author Affiliations: Sharma, N., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Tariq, A., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Mishra, M., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Corresponding Author: Sharma, N.; Department of Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeIndia; email: navindme@iitr.ac.in
Appears in Collections:Journal Publications [ME]

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