표제지
요약문
ABSTRACT
목차
기호목록 9
I. 서론 10
II. 해석 형상 및 계산 영역 13
III. 수치해석 방법 14
III-1. 경계 조건 및 성능 함수 15
III-2. 격자 생성 및 의존성 테스트 16
IV. 결과 및 검토 17
V. 결론 38
참고문헌 39
Fig. 1. Small shell and tube heat exchanger 20
Fig. 2. Twisted Tape Inserts Tube 21
Fig. 3. Internal Helically Finned Tube 22
Fig. 4. Tube 3D model 23
Fig. 5. Computational domain 24
Fig. 6. 2D geometry 25
Fig. 7. Grid independence test 26
Fig. 8. Comparison of present numerical results with experimental results... 27
Fig. 9. Computational grids 28
Fig. 10. Nusselt number for different kind of tube at various Reynolds number 29
Fig. 11. Pressure drop for different kind of tube at various Reynolds number 30
Fig. 12. Temperature variation for different kind of tube at various Reynolds number 31
Fig. 13. Temperature distributions at Reynolds number 5,000 32
Fig. 14. Temperature distributions at Reynolds number 40,000 33
Fig. 15. Pressure distributions at Reynolds number 5,000 34
Fig. 16. Pressure distributions at Reynolds number 40,000 35
Fig. 17. Distributions on section (x/di=14.8) of Twisted Tape Inserts Tube at various Reynolds number(이미지참조) 36
Fig. 18. Distributions on section (x/di=14.8) of Internal Helically Finned Tube at various Reynolds number(이미지참조) 37