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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27 , No. 3

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[ Special Issue : Seoul Tech Capstone Design ]
Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27, No. 3, pp. 293-299
Abbreviation: J. Korean Soc. Manuf. Technol. Eng.
ISSN: 2508-5107 (Online)
Print publication date 15 Jun 2018
Received 29 Apr 2018 Revised 12 Jun 2018 Accepted 14 Jun 2018
DOI: https://doi.org/10.7735/ksmte.2018.27.3.293
헬리컬 코일 내 층류유동에서의 마찰 및 열전달 특성에 대한 수치해석 연구
김정우^a^{, *} ; 허현^a

Numerical Investigation of Friction and Heat Transfer Characteristics of Laminar Flow in Helically Coiled Pipes
Jungwoo Kim^a^{, *} ; Hyeon Heo^a
aDepartment of Mechanical System Design Engineering, Seoul National University of Science and Technology, 232, Gongneung-ro, Nowon-gu, Seoul 01811, Korea
Correspondence to : ^Tel.: +82-2-970-6856, Fax: +82-2-974-8270, E-mail address:*kimjw@seoultech.ac.kr (Jungwoo Kim).



Funding Information ▼ Seoul National University of Science and Technology

Abstract

In this study, we have numerically investigated the friction characteristics and heat transfer coefficients for laminar flow in helically coiled pipes. Basic geometric shape parameters of helical coil geometry such as curvature and pitch (or torsion) were taken into account. The range of the geometric shapes considered in this study exceeds the range available in literature. Thus, the present study supplements existing results. The results obtained in this study are, to a certain extent, different from existing correlations and results. Furthermore, our results indicate that the assumption that friction and heat transfer coefficients in helically coiled pipes can be estimated by applying modified diameters to the correlations for curved pipes is not correct.


Keywords: Helically coiled pipes, Curved pipes, Friction coefficient, Heat transfer coefficient

Acknowledgments

이 연구는 서울과학기술대학교 교내 학술연구비 지원으로 수행되었습니다.

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