- 난류상태로 운전되는 저어널베어링에서의 $kappa-varepsilon$ 모델을 이용한 3-차원 THD해석
- ㆍ 저자명
- 이득우,김경웅
- ㆍ 간행물명
- 윤활학회지
- ㆍ 권/호정보
- 1987년|3권 1호|pp.39-46 (8 pages)
- ㆍ 발행정보
- 한국윤활학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
Frictional loss in turbulent regime is abnormally increased compared with in laminar regime. Thus the consideration of temperature rise across fluid film is significant in analysis and conventional isothermal theory loses its usefulness for performance prediction. This paper proposes to the three-dimensional thermohydrodynamic analysis of finite journal bearings operating under turbulent condition using two-equation model($kappa-varepsilon$ model) proposed by Hassid & Poreh. The equations are solved numerically by finite difference method. We make the analysis applicable even at large eccentricity when back flow of the lubricants occurs and axial flow is no longer ignored compared to circumferential flow.