Experimental investigation of the cooling characteristics of a monobloc cast iron brake disc with fingered hub

The paper compares heat dissipation characteristics of two interchangeable ventilated brake discs, a standard solid hub and a newly developed fingered hub version, both single piece cast designs. The tests were conducted on a specially developed Thermal Flow Rig, which enables disc induction heating to 450°C and cooling for a range of rotational and air speeds, in parallel and angular cross flow. The Rig facilitated very accurate and repeatable experiments to be conducted for numerous combinations of operating conditions. From the recorded cooling curves, average heat transfer coefficients for convection and radiation were extracted and the results also presented in a generic form, using Nusselt numbers. The fingered design demonstrated superior convective heat dissipation, with the improvements varying depending on the rotational speed, air cross flow velocity and angle, as well as disc temperature. The gains were ranging from 3.5% to over 20%. The fingered design is 8.5% lighter and being a single piece cast disc, it remains inexpensive to mass produce.

• Record URL:
  https://doi.org/10.1177/0954407019838642
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09544070
• Supplemental Notes:
  • © IMechE 2019.
• Authors:
  • Tirovic, Marko
  • 0000-0003-4409-0813
  • Topouris, Stergios
  • Sherwood, Glenn
• Publication Date: 2020-1

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 85-97
• Serial:
  • Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
  • Volume: 234
  • Issue Number: 1
  • Publisher: Sage Publications Limited
  • ISSN: 0954-4070
  • EISSN: 2041-2991
  • Serial URL: http://pid.sagepub.com/content/current

Subject/Index Terms

• TRT Terms: Brake discs; Cast iron; Cooling; Experiments; Flow visualization; Heat transfer; Motor vehicles
• Subject Areas: Highways; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 01729287
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 29 2020 2:29PM