Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1895
Title: Numerical Investigation of Heat Transfer of Non-Newtonian Power-Law Fluids Around a Triangular Prism in Time-Periodic Regime
Authors: Dhiman, Amit KumarK.
Agarwal R.
Published in: Iranian Journal of Science and Technology - Transactions of Mechanical Engineering
Abstract: Laminar heat transfer characteristics of non-Newtonian power-law fluids from a long (heated) triangular prism in the time-periodic regime have been explored. Momentum and energy equations were solved using finite volume methodology over the range of non-dimensional control parameters: Reynolds number (Re) = 50–150, Prandtl number (Pr) = 1–50 and power-law index (n) = 0.4–1.8. For the fixed Pr, the local and the time-averaged Nusselt numbers increase with rising Re irrespective of n. However, the local and the time-averaged Nusselt numbers decrease as the fluid nature alters from pseudo-plastic (n < 1) to dilatant (n > 1) for the fixed Re and Pr. Maximum enhancements in the values of time-averaged Nusselt numbers for Pr = 10, 20 and 50 with respect to Pr = 1 are observed to be approximately 180, 273 and 438%, respectively. Further, it is observed that for the fixed n and Pr, the Colburn heat transfer factor (or the jh factor) decreases with rising Re. Finally, the various values of the jh factor at different Re, n and Pr have been correlated via a simple expression, thus enabling its estimation in a new application. © 2018, Shiraz University.
Citation: Iranian Journal of Science and Technology - Transactions of Mechanical Engineering (2020), 44(2): 427-441
URI: https://doi.org/10.1007/s40997-018-0270-x
http://repository.iitr.ac.in/handle/123456789/1895
Issue Date: 2020
Publisher: Springer
Keywords: Forced convection
Heat transfer enhancement
Non-Newtonian fluids
Time-periodic regime
Triangular prism
ISSN: 22286187
Author Scopus IDs: 8548369300
55429949900
Author Affiliations: Dhiman, A.K., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247 667, India
Agarwal, R., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247 667, India
Corresponding Author: Dhiman, A.K.; Department of Chemical Engineering, Indian Institute of Technology RoorkeeIndia; email: amitdfch@iitr.ac.in
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.