The gas flow and heat transfer inside an EGR cooler for a diesel engine are numerically analyzed to investigate the performance of EGR cooler. The commercial code FLUENT is utilized to simulate a single spiral tube with constant wall temperature condition. The numerical analysis is performed with the variation of exhaust gas flow rates according to engine speed. The computational results agree well with the experimental results published before. The results show that the maximum error rate is about 0.6% for all operating conditions. Thus a single tube model with constant wall temperature condition is appropriate for simulating EGR cooler.

Abstract
 기호설명
 1. 서론
 2. 수치해석
  2.1 수치해석 모델
  2.2 수치해석 조건 및 방법
 3. 수치해석결과
  3.1 온도 분석
  3.2 압력강하와 속도변화 분석
  3.3 효율 분석
 4. 결론
 후기
 참고문헌

• 김제영(서울과학기술대학교 기계·자동차공학과) | J. Y. Kim
• 박성천(여주대학교 자동차과) | S. C. Park
• 이건화(르노삼성자동차) | ·G. W. Lee
• 이수룡(서울과학기술대학교 기계·자동차공학과) | S. R. Lee 교신저자