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Journal of Enhanced Heat Transfer
Главный редактор: Zhixiong Guo (open in a new tab)
Founding Advisory Editor: Arthur E. Bergles (open in a new tab)
Редактор-основатель: Ralph L. Webb (open in a new tab)

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ISSN Печать: 1065-5131

ISSN Онлайн: 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

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A Numerical Study on Fluid Flow and Heat Transfer Performance of Internally Roughened Tubes with Dimples

Том 16, Выпуск 3, 2009, pp. 267-285
DOI: 10.1615/JEnhHeatTransf.v16.i3.40
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Краткое описание

In this paper, 3D numerical simulations are conducted in heat transfer enhanced tubes with internally roughened dimples in the range of Re = 2000 to 11,000. The fluid flow and heat transfer characteristics are fully understood by the local and overall friction factors, Nusselt number, and Colburn j factor. The local mean friction factor has a periodic change due to the periodic dimple distribution, the eddy zone and high-pressure region of every dimple greatly influence the working fluid for heat transfer enhancement. In this numerical simulation, five samples are employed to study the detailed heat transfer characteristics. The results show that the dimpled tube is a new kind of heat transfer enhanced tube with the excellent heat transfer performance and low resistance. It is found that the effects of dimples on the heat transfer performance can be well described by the field synergy principle. The effect of different dimple arrangements is very little, which is always within 2%. But the effect of dimple size on heat transfer and fluid flow performance is very significant, thus there exists a tube with an optimum dimple size among the tubes investigated in this paper. By integrated performance evaluation of NUF0/NU0F, a maximum of about 60% heat transfer enhancement with the same friction penalty can be gained by the optimal dimpled tube.

ЦИТИРОВАНО В
  1. Huang Z., Yu G.L., Li Z.Y., Tao W.Q., Numerical Study on Heat Transfer Enhancement in a Receiver Tube of Parabolic Trough Solar Collector with Dimples, Protrusions and Helical Fins, Energy Procedia, 69, 2015. Crossref

  2. Huang Zhen, Li Zeng-Yao, Yu Guang-Lei, Tao Wen-Quan, Numerical investigations on fully-developed mixed turbulent convection in dimpled parabolic trough receiver tubes, Applied Thermal Engineering, 114, 2017. Crossref

  3. Sobhani M., Behzadmehr A., Investigation of thermo-fluid behavior of mixed convection heat transfer of different dimples-protrusions wall patterns to heat transfer enhancement, Heat and Mass Transfer, 54, 11, 2018. Crossref

  4. Zhang Liang, Xie Shuai, Liang Zheng, Zhang Jie, Wang Yulin, Chen Wei, Kong Chunyan, Numerical investigation of flow and heat transfer in enhanced tube with slot dimples, Heat and Mass Transfer, 55, 12, 2019. Crossref

  5. Saha Sujoy Kumar, Ranjan Hrishiraj, Emani Madhu Sruthi, Bharti Anand Kumar, Numerical Simulation of Integral Roughness, Laminar Flow in Tubes with Roughness and Reynolds Analogy for Heat and Momentum Transfer, in Insert Devices and Integral Roughness in Heat Transfer Enhancement, 2020. Crossref

  6. Deymi-Dashtebayaz Mahdi, Akhoundi Mahla, Ebrahimi-Moghadam Amir, Arabkoohsar Ahmad, Jabari Moghadam Ali, Farzaneh-Gord Mahmood, Thermo-hydraulic analysis and optimization of CuO/water nanofluid inside helically dimpled heat exchangers, Journal of Thermal Analysis and Calorimetry, 143, 6, 2021. Crossref

  7. Sabir Rizwan, Khan Muhammad Mahabat, Sheikh Nadeem Ahmed, Ahad Inam Ul, Brabazon Dermot, Assessment of thermo-hydraulic performance of inward dimpled tubes with variation in angular orientations, Applied Thermal Engineering, 170, 2020. Crossref

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