This work presents a mathematical model for simulating the swirling flow in an outward convex corrugated tube with twisted-tape insert (CT). The synergistic effect on the flow, heat transfer, and friction loss behaviors between the surface-based and fluid-based enhancements is numerically investigated. Renormalized group (RNG) k-ε turbulence model applied in our paper is verified by comparing with experimental results investigated by Manglik and Bergles. Comparisons of the CT and smooth tube with twisted-tape insert (ST) plots are confirmed to investigate the performance differences between them. When comparing the performance of the CT against the ST, the maximum ratio of Nusselt number (Nuc/Nus), ratio of friction factor (f/fs), and overall heat transfer performance (η) values realized in the CT are 1.36, 1.53, and 1.15 times higher, respectively, than the maximum values for those same variables in the ST.
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A Numerical Study of the Flow and Heat Transfer Characteristics of Outward Convex Corrugated Tubes With Twisted-Tape Insert
Longbin Yang,
Longbin Yang
College of Power and Energy Engineering,
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: yanglb_hrbeu@163.com
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: yanglb_hrbeu@163.com
Search for other works by this author on:
Huaizhi Han,
Huaizhi Han
College of Power and Energy Engineering,
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: hanhz_hrbeu@163.com
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: hanhz_hrbeu@163.com
Search for other works by this author on:
Yanjun Li,
Yanjun Li
College of Power and Energy Engineering,
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: liyj_hrbeu@163.com
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: liyj_hrbeu@163.com
Search for other works by this author on:
Xiaoming Li
Xiaoming Li
College of Power and Energy Engineering,
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: lixiaoming7725@hrbeu.edu.cn
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: lixiaoming7725@hrbeu.edu.cn
Search for other works by this author on:
Longbin Yang
College of Power and Energy Engineering,
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: yanglb_hrbeu@163.com
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: yanglb_hrbeu@163.com
Huaizhi Han
College of Power and Energy Engineering,
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: hanhz_hrbeu@163.com
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: hanhz_hrbeu@163.com
Yanjun Li
College of Power and Energy Engineering,
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: liyj_hrbeu@163.com
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: liyj_hrbeu@163.com
Xiaoming Li
College of Power and Energy Engineering,
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: lixiaoming7725@hrbeu.edu.cn
Harbin Engineering University,
145 Nan tong Street,
Nan Gang District,
Harbin 150001, China
e-mail: lixiaoming7725@hrbeu.edu.cn
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received July 31, 2014; final manuscript received July 11, 2015; published online September 2, 2015. Assoc. Editor: Sujoy Kumar Saha.
J. Heat Transfer. Feb 2016, 138(2): 024501 (8 pages)
Published Online: September 2, 2015
Article history
Received:
July 31, 2014
Revised:
July 11, 2015
Citation
Yang, L., Han, H., Li, Y., and Li, X. (September 2, 2015). "A Numerical Study of the Flow and Heat Transfer Characteristics of Outward Convex Corrugated Tubes With Twisted-Tape Insert." ASME. J. Heat Transfer. February 2016; 138(2): 024501. https://doi.org/10.1115/1.4031171
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