Macquarie University
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Mixed convection phenomena inside a simplified tyre geometry

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posted on 2022-03-28, 19:56 authored by James Slaughter
To further current methodology and understanding regarding heat transfer in motorsport tyres, RANS/URANS methodologies were created and compared to investigate natural and mixed convection phenomena in a simplified tyre geometry subject to a thermal gradient from rim surface to tyre crown. At a Rayleigh Number (Ra) of 5.02 ×106 natural convection phenomena were investigated and variation in outer cylinder Nusselt Number (Nu) was quantified. With rotational effects at a higher Rayleigh Number of 1.094×107, a weak correlation between Reynolds Number (Re) and outer cylinder Nu was found with 21% variation across the whole Re range (4.851 ×105 < Re < 1.698 × 106), with most variation occurring at lower Re. Further, a RANS and URANS methodology were compared for resolution of Natural Convection phenomena. Steady-State and Transient Implicit solvers were compared with minimal variation in results but the transient solver taking 0.709% longer per iteration and 51.06% longer to converge. The transient methodology showed promise however as they did not encounter similar stability issues as steady-state solutions at higher Ra.


Table of Contents

1. Introduction and background -- 2. Literature review -- 3. Methodology -- 4. Results -- 5. Conclusion -- Appendix.


Bibliography: pages 52-53 Empirical thesis.

Awarding Institution

Macquarie University

Degree Type

Thesis MRes


MRes, Macquarie University, Faculty of Science and Engineering, Department of Engineering

Department, Centre or School

Department of Engineering

Year of Award


Principal Supervisor

Sammy Diasinos


Copyright James Slaughter 2018. Copyright disclaimer:




1 online resource (1 online resource (x, 53 pages)) illustrations (some colour)

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