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Brake Rotor Temperature

This study aims to analyze brake rotor temperatures in a Formula SAE car, focusing on heat transfer dynamics under race conditions. Key assumptions include even heat transfer side-to-side and that all kinetic energy is converted into heat by brake rotors. The methodology involves simulating five acceleration-deceleration cycles from 0 to 37 m/s (83 mph) with a constant rate. Results capture variations in kinetic energy, initial and final temperatures, and heat transfer rates (q"rad, q"conv). Conclusions recommend experimenting with different rotor sizes and widths to optimize temperature management.

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Brake Rotor Temperature

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  1. Brake Rotor Temperature Nathan Bloomfield Josh Carroll Brian Winder

  2. Objective • Analyze brake rotor temperature for a Formula SAE car. http://www.comsol.com/showroom/gallery/102.php# http://www.ntrc.gov/pdfs/showcase020506/DaleHartsock.pdf

  3. Assumptions • Even heat transfer side to side • Kinetic energy of the wheels is not significant • All of the kinetic energy goes into the brake rotors as heat • There is nothing else slowing the car down

  4. Method • Assume 1.5 g constant acceleration and deceleration to simulate race conditions. • Five cycles from 0 to 37 m/s (83 mph) • In Excel, we found: • Kinetic energy • Initial temperature guess • q"rad, q"conv and total q” • Final temperature All of these change throughout the cycle

  5. Summary of Results

  6. Summary of Results

  7. Conclusions and Recommendations • Use different size rotors • Rotor width can be changed to increase or decrease the overall temperature

  8. Questions?

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