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Heat Transfer Research

Publication de 18  numéros par an

ISSN Imprimer: 1064-2285

ISSN En ligne: 2162-6561

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: 1.7 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: 1.4 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: 0.6 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: 0.00072 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: 0.43 SJR: 0.318 SNIP: 0.568 CiteScore™:: 3.5 H-Index: 28

Indexed in

NUMERICAL AND EXPERIMENTAL STUDY OF FLOW AND HEAT TRANSFER IN OUTWARDLY CONVEX CORRUGATED TUBES WITH A TWISTED TAPE INSERT

Volume 49, Numéro 16, 2018, pp. 1605-1628
DOI: 10.1615/HeatTransRes.2018020644
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RÉSUMÉ

This study involves numerical and experimental investigations on flow and heat transfer in an outwardly convex corrugated tube with various structural twisted tape inserts (CT) by using computational fluid dynamics (CFD) methods. The numerical mode is validated by comparing it with experimental data for a smooth tube and corrugated tubes in a developed experimental apparatus. The study also includes a comparison of thermodynamic performances of a CT, a smooth tube with a twisted tape insert (ST), and of a smooth tube to determine their differences. The influence of a twist ratio is considered to analyze thermodynamic regulation and reveal the mechanism operating in CT. The numerical results also agree well with the experimental results on the Nusselt number and friction factor of the corrugated and smooth tubes. The maximum deviations are controlled within ± 6% for Nuc and ± 7.6% for fc. The Nu in the CT exceeds those in the ST and smooth tube by 120-136% and 171-317%, respectively. The friction factor in the CT exceeds those in the ST and plain tube by 148-153% and 476-514%, respectively. The effect of twist ratio in a CT is considered, and the results indicate that the best overall thermal performance (η = 1.97) is obtained with a high twist ratio (y/w = 5). However, the highest thermal performance (Nuc/Nus = 4.78) is obtained with the lowest twist ratio (y/w = 1.25). The contour plots indicate that a potential reason for this can be attributed to the coexistence of the corrugated tubes and tapes that provide a synergetic swirling effect, which efficiently reduces the thermal and velocity boundary layer developments and thus effectively increases the heat transfer performance.

CITÉ PAR
  1. Wei Hongyu, Cong Tao , Jiang Chen , Zhou Wenxue , Bai Bofeng, HEAT TRANSFER ENHANCEMENT OF A PARTIALLY SERRATED TWISTED FINNED TUBE WITH NON-GROOVING ON THE LEEWARD SIDE , Journal of Enhanced Heat Transfer, 29, 4, 2022. Crossref

  2. Naderifar Afshin, Nikian Mohammad, Javaherdeh Kourosh, Borji Mehdi, Numerical investigation of the effect of fins on heat transfer enhancement of a laminar non-Newtonian nanofluid flow through a corrugated channel, Journal of Thermal Analysis and Calorimetry, 147, 17, 2022. Crossref

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