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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1843
Title: Effect of wall proximity on the flow over a heated square bluff body
Authors: Kumar D.
Dhiman, Amit Kumar
Published in: Lecture Notes in Mechanical Engineering
Abstract: The two-dimensional numerical simulations of Newtonian fluid stream about a square bluff body have been studied in an unconfined configuration in addition in the propinquity of a plane wall. The comparison of flow and heat transfer constraints is done with the pure unconfined flow about a square obstacle. The set of physical constraints considered as Reynolds numbers (Re) = 100, 120 and Prandtl number (Pr) = 0.7 (air) at varying values of gap ratios (g). The values of drag and lift coefficients, and average Nusselt number are computed. The present study shows that on increasing the gap ratio, the drag coefficient is acquired to be the highest for the gap ratio of unity and it is observed the lowest for the unconfined case. Lift coefficient decreases and average Nusselt number increases with increasing gap ratio, but opposite effects are observed for the unconfined case. The flow becomes steady at low gap ratio, but on increasing gap ratio the flow behavior changes to periodic unsteady. The augmentation in heat transfer is found about 35% for g = 1, with respect to the corresponding value for the unconfined case. © Springer India 2017.
Citation: Lecture Notes in Mechanical Engineering (2017), (): 269-278
URI: https://doi.org/10.1007/978-81-322-2743-4_26
http://repository.iitr.ac.in/handle/123456789/1843
Issue Date: 2017
Publisher: Springer Heidelberg
Keywords: Drag and lift coefficients
Gap ratio
Newtonian fluid
Nusselt number
Square cylinder
ISSN: 21954356
Author Scopus IDs: 57202477871
8548369300
Author Affiliations: Kumar, D., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247 667, India
Dhiman, A., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247 667, India
Corresponding Author: Dhiman, A.; Department of Chemical Engineering, Indian Institute of Technology RoorkeeIndia; email: dhimuamit@rediffmail.com
Appears in Collections:Journal Publications [CH]

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