Air Flow and Heat Transfer in Ventilated Disc Brake Rotors With Diamond and Tear-Drop Pillars

Wallis, Lisa; Leonardi, E.; Milton, B. E.; Joseph, Phillip

doi:10.1080/104077802317418269

Cited by 66 publications

(44 citation statements)

References 7 publications

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“…A disc with curved vanes has better pumping action as compared to a disc with straight radial vanes [10]. A disadvantage of having curved vanes on a disc is that discs used on the right and left side of a vehicle must be distinguished as their function depends on the direction of rotation.…”

Section: Curved Vanesmentioning

confidence: 99%

Overview of disc brakes and related phenomena - a review

Rashid

2014

IJVNV

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Disc brakes have evolved over time to be a reliable method of decelerating and stopping a vehicle. There have been different designs of disc brake systems for different applications. This review gives a detailed description of different geometries of the components and the materials used in a disc brake system. In spite of all the improvements, there are still many operational issues related to disc brakes that need to be understood in a greater detail and resolved. There has been a lot of research going on about these issues and at the same time different methods are being proposed to eliminate or reduce them. There has also been an intensive fundamental research going on about the evolution of tribological interface of disc-pad system. One major purpose of the present paper is to give a comprehensive overview of all such developments.

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Section: Curved Vanesmentioning

confidence: 99%

Overview of disc brakes and related phenomena - a review

Rashid

2014

IJVNV

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“…The pumping efficiency of pinvented rotors is less than that of a rotor with traditional vanes. However, Wallis et al [8] have shown that the pin-vented discs have similar heat transfer rate when compared with discs having curved vanes because of increase in turbulence and hence heat transfer coefficient. Other advantages of these discs [8] include a higher resistance to thermal deformation owing to the more even distribution of material, which results in lower thermal stress buildup within the rotor.…”

Section: Introductionmentioning

confidence: 99%

A computational fluid dynamic analysis on the effect of front row pin geometry on the aerothermodynamic properties of a pin-vented brake disc

Palmer

Mishra

Fieldhouse

2008

Proceedings of the Institution of Mechanical Engineers, Part D:

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Increasing demand from the consumer for higher levels of refinement from their passenger vehicles has put considerable pressure on the automotive industry to produce ever quieter cars. In order to prevent the occurrence of many forms of brake noise, especially judder and drone, excessive heating of the brake disc must be avoided, while minimizing temperature variations across the rotor. In order for this to be achieved the brake rotor must be designed such that it ensures sufficient uniform heat dissipation and thermal capacity. In high-demand braking applications, vented discs consisting of two rubbing surfaces separated by straight radial vanes are normally employed, as they utilize a greater surface area to dissipate heat. Within this paper the effects of changing the geometry of the first row of pins on aerothermodynamic properties of a pin-vented brake rotor are investigated using computational fluid dynamics (CFD). The validated CFD model shows that decreasing the thickness of the first row of pins by 10 per cent improves the mass flowrate through the rotor by 14 per cent and the heat transfer rate by 6 per cent. The results obtained can be used for the design of brake discs which are efficient with respect to heat dissipation.

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“…The radial type brake rotors are easy to manufacture as compared to pillared type rotors. The material distribution is more uniform in case of pillared rotors, which provides resistance to crack propagation and significantly lower thermal stresses (Lisa Wallis, et al, 2002). It is also found that thermal failure of brake rotor is not only due to high temperatures, but also due to high thermal stresses developed due to large temperature gradients.…”

Section: Introductionmentioning

confidence: 70%

Analysis of Air Flow and Heat Transfer in Ventilated Disc Brake Rotor with Diamond Pillars

2011

International Journal of Current Engineering and Technology

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Air Flow and Heat Transfer in Ventilated Disc Brake Rotors With Diamond and Tear-Drop Pillars

Cited by 66 publications

References 7 publications

Overview of disc brakes and related phenomena - a review

Overview of disc brakes and related phenomena - a review

A computational fluid dynamic analysis on the effect of front row pin geometry on the aerothermodynamic properties of a pin-vented brake disc

Analysis of Air Flow and Heat Transfer in Ventilated Disc Brake Rotor with Diamond Pillars

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