A generalized analytical model for joule heating of segmented wires

Balakrishnan, Vivekananthan and Dinh, Toan ORCID: https://orcid.org/0000-0002-7489-9640 and Phan, Hoang-Phuong and Dao, Dzung Viet and Nguyen, Nam-Trung (2018) A generalized analytical model for joule heating of segmented wires. Journal of Heat Transfer, 140 (7):072001. ISSN 0022-1481

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Abstract

This paper presents an analytical solution for the Joule heating problem of a segmented wire made of two materials with different properties and suspended as a bridge across two fixed ends. The paper first establishes the one-dimensional (1D) governing equations of the steady-state temperature distribution along the wire with the consideration of heat conduction and free-heat convection phenomena. The temperature coefficient of resistance of the constructing materials and the dimension of the each segmented wires were also taken into account to obtain analytical solution of the temperature. COMSOL numerical solutions were also obtained for initial validation. Experimental studies were carried out using copper and nichrome wires, where the temperature distribution was monitored using an IR thermal camera. The data showed a good agreement between experimental data and the analytical data, validating our model for the design and development of thermal sensors based on multisegmented structures.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Accepted version deposited in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 26 May 2020 04:40
Last Modified: 03 Jun 2020 04:24
Uncontrolled Keywords: extended surfaces, micro heat transfer, natural convection, thermal systems, mixed convection, nanoscale heat transfer
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091306 Microelectromechanical Systems (MEMS)
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1115/1.4038829
URI: http://eprints.usq.edu.au/id/eprint/38164

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