TY - JOUR
TI - Numerical investigation of fluid flow and heat transfer characteristics on the aerodynamics of ventilated disc brake rotor using CFD
AU - Raj R Thundil Karuppa
AU - R Ramsai
AU - J Mathew
AU - G Soniya
JN - Thermal Science
PY - 2014
VL - 18
IS - 2
SP - 667
EP - 675
PT - Article
AB - Ventilated brake discs are used in high speed vehicles. The brake disc is an  important component in the braking system which is expected to withstand and  dissipate the heat generated during the braking event. In the present work,  an attempt is made to study the effect of vane-shape on the flow-field and  heat transfer characteristics for different configurations of vanes and at  different speeds numerically. Three types of rotor configurations circular  pillared, modified taper radial and diamond pillar vanes were considered for  the numerical analysis. A rotor segment of 20° was considered for the  numerical analysis due to its rotational symmetry. The pre processing is  carried out with the help of ICEM-CFD and analysis is carried out using  ANSYS CFX 12.1. The three dimensional flow through the brake rotor vanes has  been simulated by solving the appropriate governing equations viz.  conservation of mass, momentum and energy using the commercial CFD tool,  ANSYS CFX 12. The predicted results have been validated with the results  available in the literature. Circular pillar rotor vanes are found to have  more uniform pressure and velocity distribution which results in more  uniform temperature drop around the vanes. The effect of number and diameter  of vanes in the circular pillared rotor is studied and the geometry is  optimized for better mass flow and heat dissipation characteristics.