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Modeling and analysis of brake drum with extended fins on the circumference of drum to improve heat dissipation: a CFD approach

Author Affiliations

  • 1Department of Mechanical Engineering, Chhattisgarh Swami Vivekanand Technical University, Bhilai, CG, India
  • 2Department of Mechanical Engineering, Chhattisgarh Swami Vivekanand Technical University, Bhilai, CG, India

Res. J. Engineering Sci., Volume 7, Issue (5), Pages 1-6, May,26 (2018)

Abstract

This work involves study of different factors responsible for the failure of brake in vehicles. Drum brake is more prevalent to the brake failure or brake fade in compare to the disc brake as in the case of later one heat is easily dissipated away from the rotors and the pads. But in the case of drum brake system due to its configuration the equipments are not exposed directly to the air because of which the heat convection process is very slow and less amount of heat is dissipated. So there is need to equipped the drum brake with such provision so that it will results in improvement of heat dissipation by convection. To increase the heat dissipation from the drum, design changes have been done. Basically, fins like features are added on the circumference of the drum, three different models with different number of fins have been analyzed. CFD analysis is performed by using ANSYS Fluent software to evaluate the result. Several simulations are carried out to find heat flux, temperature difference between solid fluid, heat transfer co-efficient and heat transfer rate for all three models. Results comes for different cases are then compared to understand the effect of design changes on the heat transfer rate, in this way we can obtain the model which is best suited for our purpose. Finally, we come to the conclusion that when we are increasing the numbers of fins of specific shape and size we can obtaining the positive results i.e. the heat transfer rate is increasing by providing fins on the circumference of the drum brake. Hence, the heat will be dissipated at much faster rate from modified drum model which will reduce the risk of brake fade or brake failure.

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