Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1830
Title: Cross-buoyancy mixed convection from a heated cylinder placed asymmetrically in a channel
Authors: Dhiman, Amit Kumar
Gupta R.
Baranyi L.
Published in: International Communications in Heat and Mass Transfer
Abstract: Mixed convection heat transfer from a heated circular cylinder asymmetrically placed in a horizontal channel was studied for incompressible Newtonian fluid. A systematic investigation using two-dimensional numerical simulation (Ansys Fluent) was performed for the following control parameters: Reynolds number Re = 50, 100, 150, Richardson number Ri = 0, 1, 2, blockage ratio ? = 0.2, 0.3, 0.4, gap ratio ? = 0.25, 0.5, 1 and Prandtl number of air Pr = 0.7. Upon changing these parameters, steady and time periodic regimes were identified. The strongest influence on heat transfer (average Nusselt number) was identified when changing the Reynolds number (a 94% increase between the minimum and maximum Re investigated, with other parameters held constant), followed by Richardson number (+18%) and blockage ratio (+16%); the effect of asymmetric placement (?) was almost negligible (+1%). The time-mean of the drag coefficient was most influenced by blockage ratio (a 150% increase), followed by Richardson number (+91%), gap ratio (+19%), and Re (+10%). © 2018 Elsevier Ltd
Citation: International Communications in Heat and Mass Transfer (2018), 95(): 139-146
URI: https://doi.org/10.1016/j.icheatmasstransfer.2018.05.007
http://repository.iitr.ac.in/handle/123456789/1830
Issue Date: 2018
Publisher: Elsevier Ltd
Keywords: Asymmetry
Confined cylinder
Gap ratio
Mixed convection
Wall confinement
ISSN: 7351933
Author Scopus IDs: 8548369300
57209831130
7003835583
Author Affiliations: Dhiman, A., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247 667, India
Gupta, R., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247 667, India
Baranyi, L., Department of Fluid and Heat Engineering, Institute of Energy Engineering and Chemical Machinery, University of Miskolc, Miskolc-Egyetemváros, 3515, Hungary
Funding Details: The third author gratefully acknowledges the support of the European Union and the Hungarian State, co-financed by the European Regional Development Fund in the framework of the GINOP-2.3.4-15-2016-00004 project, aimed to promote the cooperation between the higher education and the industry. The research was also supported by the EFOP-3.6.1-16-00011 “Younger and Renewing University – Innovative Knowledge City – institutional development of the University of Miskolc aiming at intelligent specialisation” project implemented in the framework of the Széchenyi 2020 program. The realization of these two projects is supported by the European Union, co-financed by the European Social Fund .
Corresponding Author: Baranyi, L.; Department of Fluid and Heat Engineering, Institute of Energy Engineering and Chemical Machinery, University of MiskolcHungary; email: arambl@uni-miskolc.hu
Appears in Collections:Journal Publications [CH]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.