나선형 EGR Cooler의 pitch 길이 변화에 따른 열전달 특성에 관한 수치 해석
Numerical Analysis on Heat Transfer Characteristics by Changing Pitch Length of a Spiral type EGR Cooler
To enhance heat transfer characteristics of EGR, a numerical study on the effect of pitch variation to EGR is conducted. The commercial code FLUENT is utilized to simulate single spiral tube with constant wall temperature. The numerical analysis is performed with various mass flow rate. The results show that as pitch of the tube is smaller, the heat transfer becomes stronger due to turbulent flow. The heat transfer characteristics is mostly dominated by not mass flow rate but pitch. The general correlation is derived in Nusselt number, Reynolds number, and pitch. This correlation agrees well within 3% of maximum error.
목차
Abstract 기호설명 1. 서론 2. 수치 해석 모델 및 경계 조건 3. 수치 해석 결과 및 검토 4. 결론 References
키워드
Heat Transfer Enhancement(열전달향상)EGR(배기가스 재순환 장치)CFD(전산유체역학)NusseltNumber(너셀수)Turbulent Flow(난류유동)
저자
김제영 [ J. Y. Kim | Seoul National University of Science and Technology ]
김영진 [ Y. J. Kim | Seoul National University of Science and Technology ]
박성천 [ S. C. Park | Yeoju Institute of Technology ]
이수룡 [ S. R. Lee | Member, Seoul National University of Science and Technology ]
Corresponding Author