A prediction method for convective heat transfer coefficients of brake discs based on small samples combined wind tunnel tests and CFD simulations

Lijun Zhang; Lingqiu Jia; Dejian Meng; Jiaming Liang

doi:10.1117/12.3030129

5 June 2024 A prediction method for convective heat transfer coefficients of brake discs based on small samples combined wind tunnel tests and CFD simulations

Lijun Zhang, Lingqiu Jia, Dejian Meng, Jiaming Liang

Author Affiliations +

Proceedings Volume 13163, Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024); 131632K (2024) https://doi.org/10.1117/12.3030129
Event: International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024), 2024, Xi'an, China

Abstract

The brake disc is a crucial component of an automobile's disc brake system, responsible for dissipating the majority of heat generated during braking. Efficient heat dissipation is essential for effective braking, and it relies on the convective heat transfer coefficient of the brake disc. However, accurately measuring this coefficient is challenging due to continuously changing flow fields caused by vehicle speed and rotation. Existing methods often lack precision, neglect the influence of position and involve complex computations. To address these issues, this study establishes a relationship between the convective heat transfer coefficient at different heights and flow velocity using high-precision small samples and wind tunnel tests. Through interpolation based on the FLUENT software's simulation of the brake disc's flow field distribution, the convective heat transfer coefficient distribution is obtained. This allows the prediction of coefficient values corresponding to different flow velocities. Validated through comparison with experimental data using an ABAQUS model, the proposed method effectively predicts the brake disc's convective heat transfer coefficient, enabling accurate analysis of cooling and temperature reduction processes.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Lijun Zhang, Lingqiu Jia, Dejian Meng, and Jiaming Liang "A prediction method for convective heat transfer coefficients of brake discs based on small samples combined wind tunnel tests and CFD simulations", Proc. SPIE 13163, Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024), 131632K (5 June 2024); https://doi.org/10.1117/12.3030129

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KEYWORDS

Temperature distribution

Simulations

Interpolation

Wind measurement

Computer simulations

Turbulence

Velocity measurements

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