Analysis of Air Flow and Heat Dissipation from a High Performance GT Car Front Brake

An X-type lattice cored ventilated brake disc with enhanced cooling performance

“…1(a), to decelerate a vehicle, the friction between the brake disc and pads transforms kinetic and potential energies into thermal energy. During highload braking such as repeated high-speed braking and continuous downhill braking, frictional heating can substantially raise temperature at the friction interface (e.g., up to 900 K) [3][4][5], leading ultimately to overheating of braking components such as brake discs and pads. A multitude of studies have reported that such overheating can cause brake fade (i.e., deterioration of friction coefficient) [6][7][8][9], increased wear of the friction pair [10] and thermal cracking of the brake disc [5,11,12].…”

“…Consequently, this type of brake disc is the most popular choice [16]. Numerous studies have been conducted to characterize its thermo-fluidic characteristics [3,14,[24][25][26][27][28][29][30][31] and to improve its cooling performance by modifying the cross-section and arrangement of radial vanes [17][18][19][32][33][34][35][36]. It is demonstrated that cooling flow turns to the counter-rotating direction with respect to the brake disc axis before entering the ventilated channel.…”

Aerodynamic and Thermal Modelling of Disc Brakes—Challenges and Limitations

“…The complexity of the computer-aided design (CAD) models for numerical simulations can vary significantly. Simple studies looked into modelling of a single channel inside the brake disc [5], a sector of the brake disc [6,7] or just the brake disc with some surrounding geometries [8][9][10]. More complex studies would include more geometrical parts [11,12], which have been shown to be more representative of the on-road conditions [11].…”

CFD Investigation on 3-Dimensional Interference of a Five-Hole Probe in an Automotive Wheel Arch

“…The flow in such regions has been found to be unsteady [1,[7][8][9]. It is seen in literature that lack of knowledge of flow variables in the flow field around rotating components like disc brakes causes limitations in their analysis to estimate cooling behaviour [10]. In situ measurements of flow around ventilated disc-brake rotors can also provide a huge amount of information on their cooling properties, and thus help alleviate brake noise and judder.…”

“…Palmer et al [10] carried out experimental as well as computational investigations on the convective heat dissipation of ventilated disc brakes of a high-performance car. A systematic comparison was done between the heat dissipation properties of the brake rotors fitted to the left-hand side and the right-hand side of the vehicle.…”