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ISSN 打印: 1065-5131

ISSN 在线: 1563-5074

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 2.3 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.8 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.2 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00037 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.6 SJR: 0.433 SNIP: 0.593 CiteScore™:: 4.3 H-Index: 35

Indexed in

Conjugate Heat Transfer and Fluid Flow Analysis in Fin-Tube Heat Exchangers with Wave-Type Vortex Generators

卷 9, 册 3&4, 2002, pp. 123-136
DOI: 10.1615/JEnhHeatTransf.v9.i3-4.30
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摘要

This paper studies the use of fins with embedded wave-type vortex generators to enhance heat transfer in fin-tube heat exchangers. An infrared thermovision is used to visualize the temperature distribution on the surface of a scaled-up plain fin and upon fins with embedded vortex generators. Numerical methods are used to investigate the conjugate heat transfer and to perform a 3-D turbulence analysis of the heat transfer and fluid flow associated with wave-type vortex generators embedded fins. The current results indicate that heat transfer and friction losses are strongly dependent on the geometric parameters of the vortex generators. This study identifies a maximum improvement of 120% in the local heat transfer coefficient and an improvement of 18.5% in the average heat transfer coefficient. Furthermore, it is found that a reduction in fin area of approximately 18−20% may be obtained if vortex generators embedded fins are used in place of plain fins. Finally, it is noted that the magnitude of the attainable fin area reduction increases for higher Reynolds numbers.

对本文的引用
  1. Lin Zhi-Min, Liu Cai-Ping, Lin Mei, Wang Liang-Bi, Numerical study of flow and heat transfer enhancement of circular tube bank fin heat exchanger with curved delta-winglet vortex generators, Applied Thermal Engineering, 88, 2015. Crossref

  2. Lotfi Babak, Sundén Bengt, Wang Qiuwang, An investigation of the thermo-hydraulic performance of the smooth wavy fin-and-elliptical tube heat exchangers utilizing new type vortex generators, Applied Energy, 162, 2016. Crossref

  3. Jang Jiin-Yuh, Chen Chun-Chung, Optimization of louvered-fin heat exchanger with variable louver angles, Applied Thermal Engineering, 91, 2015. Crossref

  4. Jang Jiin-Yuh, Hsu Ling-Fang, Leu Jin-Sheng, Optimization of the span angle and location of vortex generators in a plate-fin and tube heat exchanger, International Journal of Heat and Mass Transfer, 67, 2013. Crossref

  5. Zhang Qiang, Wang Liang-Bi, Zhang Yong-Heng, The mechanism of heat transfer enhancement using longitudinal vortex generators in a laminar channel flow with uniform wall temperature, International Journal of Thermal Sciences, 117, 2017. Crossref

  6. Lin Chien-Nan, Liu Yao-Wei, Leu Jin-Sheng, Heat Transfer and Fluid Flow Analysis for Plate-Fin and Oval Tube Heat Exchangers With Vortex Generators, Heat Transfer Engineering, 29, 7, 2008. Crossref

  7. Zeeshan Mohd, Nath Sujit, Bhanja Dipankar, Numerical investigation to predict optimum attack angle combination of longitudinal vortex generators in compact heat exchangers for thermo-hydraulic heightened performance, Sādhanā, 44, 12, 2019. Crossref

  8. Zeeshan Mohd, Nath Sujit, Bhanja Dipankar, Determination of optimum winglet height of longitudinal vortex generators for the best thermo-hydraulic performance of compact heat exchangers, Journal of Mechanical Science and Technology, 33, 9, 2019. Crossref

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