초록

A numerical approach for ventilated disc brake with holes is carried out to investigate the effect of holes on the heat transfer characteristics. The numerical simulation code STAR-CCM+ is utilized to calculate flow and temperature fields with polyhedral meshes. The steady state results show that the holes make the flow velocity on the outer surface increasing, which induce the improvement of convective heat transfer on the outer surface. In the ventilated channel with holes, the convective heat transfer can be reduced due to the inflow of hot air through holes. In unsteady state, the disc has reached the highest temperature in 1,8s since the brake was engaged. The surface of disc without holes has maximum temperatures along the ventilated channels, while the surface temperatures of dis with holes are uniform.

키워드

Conjugate Heat transfer Analysis(복합열전달해석), Convective Heat Transfer(대류열전달), Numerical Study(수치해석), Surface Temperature(표면온도), Ventilated Disc Brake with or without holes(타공 혹은 타공없는 통풍형 디스크 브레이크)

참고문헌(6)open

  1. [보고서] S. M. Reddy / 2008 / Flow and Heat Transfer Analysis of a ventilated Disc Brake Rotor Using CFD, SAE 2008-01-0822

  2. [학술지] 서영진 / 2008 / 브레이크 디스크 로터 표면 수직 구멍의 영향에 관한 연구 / 한국자동차공학회 논문집 16 (1) : 100 ~ 105

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  6. [학술지] A. Belhocine / 2014 / Thermal Analysis of both Ventilated and Full Disc Brake Rotors with Frictional Heat Generation / Applied and Computational Mechanics 8 : 5 ~ 24