Flow behaviour in vented brake discs with straight and airfoil-shaped radial vanes

被引:2
作者
Bombek, Gorazd [1 ]
Hribernik, Ales [1 ,2 ]
机构
[1] Univ Maribor, Fac Mech Engn, Maribor, Slovenia
[2] Univ Maribor, Fac Mech Engn, Smetanova 17, Maribor 2000, Slovenia
关键词
Venting brake disc; cooling performance; forced convective cooling; PIV internal flow mapping; brake disc design comparison; HEAT-TRANSFER; PERFORMANCE; DISSIPATION;
D O I
10.1177/09544070221143623
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
This paper presents experimentally obtained flow characteristics inside the vane passage of a vented brake disc and at the brake disc exit. The flow conditions of three different brake discs were compared: a basic design with straight vanes and two prototypes with different vane heights, shapes (airfoil shape) and numbers. The possible effect on brake disc cooling performance was studies. Hot-wire anemometry was applied to measure the pumping performance of different discs, and particle imaging velocimetry was used to map the velocity field. All three discs were tested on a brake disc dynamometer according to the SAE J2522 standard, and the maximum temperature was measured during the thermal capacity test. No prototype outperformed the original brake disc. Moreover, the brake disc with the increased vane thickness and reduced vane height (prototype C) performed significantly worse, whereas prototype B, designed with an increased vane height and increased number of vanes, performed similarly to the original brake disc. A comparison of the flow characteristics of the three discs indicated that the significant decrease in the cooling airflow rate deteriorated the cooling performance of prototype C the most. On the other hand, the improved pumping performance did not improve the cooling performance of prototype B. Only the comparison of the internal cooling air flow pattern of the original and prototype B brake discs revealed the reason. While the characteristic jet-wake flow structure formed within the vane passage of the original brake disc, the inter-vane channel flow within brake disc B was distributed much more uniformly in a circumferential direction, with significantly lower flow velocities near the pressure vane side. This reduced the convective heat transfer on the brake disc vanes, which number, as well as the heat transfer surface area increased without the desired cooling effect.
引用
收藏
页码:3448 / 3464
页数:17
相关论文
共 43 条
  • [1] Ahmed I., 2000, 2000012778 SAE
  • [2] Analysis of factors influencing dry sliding wear behaviour of Al/SiCp-brake pad tribosystem
    Anoop, S.
    Natarajan, S.
    Babu, S. P. Kumaresh
    [J]. MATERIALS & DESIGN, 2009, 30 (09) : 3831 - 3838
  • [3] The Role of Secondary Flows and Separation in Convective Heat Transfer in a Rotating Radial Vane Brake Disk
    Atkins, Michael D.
    Kienhofer, Frank W.
    Lu, Tian Jian
    Chang, Se-Myong
    Kim, Tongbeum
    [J]. JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 2021, 143 (08):
  • [4] Flow Behavior in Radial Vane Disk Brake Rotors at Low Rotational Speeds
    Atkins, Michael D.
    Kienhofer, Frank W.
    Kim, Tongbeum
    [J]. JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 2019, 141 (08):
  • [5] Barigozzi G., 2005, 2005013930 SAE
  • [6] Bombek G., 2017, INT SCI J T MOTAUTO, V2, P58
  • [7] Failure analysis of a motorcycle brake disc
    Boniardi, M.
    D'Errico, F.
    Tagliabue, C.
    Gotti, G.
    Perricone, G.
    [J]. ENGINEERING FAILURE ANALYSIS, 2006, 13 (06) : 933 - 945
  • [8] Dantec Measurement Technology, 2000, FLOWMAP PART IM VEL
  • [9] Dorfman LA., 1963, HYDRODYNAMIC RESISTA, P244
  • [10] Visualisation of rotating stall in an axial flow fan
    Fike, Matej
    Bombek, Gorazd
    Hribersek, Matjaz
    Hribernik, Ales
    [J]. EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2014, 53 : 269 - 276