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Journal of Enhanced Heat Transfer

Published 8 issues per year

ISSN Print: 1065-5131

ISSN Online: 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

Distributions of Local Heat Transfer Coefficient on Surfaces with Solid and Perforated Ribs

Volume 5, Issue 1, 1998, pp. 9-21
DOI: 10.1615/JEnhHeatTransf.v5.i1.20
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ABSTRACT

In this experimental investigation, the variations of the local heat transfer coefficient in rib-roughened turbine blade internal cooling passages are examined. Using liquid crystal thermometry, the detailed local heat transfer distributions are determined for turbulent flows through a long, straight, square test channel model with ribs of various configurations, including perforated ribs, on two opposite walls.
Angled and V-shaped solid ribs enhance more heat transfer than transverse solid ribs. Angled solid ribs cause very large spanwise variations of the local heat transfer distribution. With the highest overall heat transfer and relatively small spanwise heat transfer variation, V-shaped ribs are recommended for internal cooling of gas turbine blades. Perforated ribs enhance less heat transfer than solid ribs, because the jet streams leaving the holes interrupt and weaken flow reattachment on the wall downstream of a rib. Increasing the size or the number of holes, or the total hole area, lowers the overall heat transfer. The lower pressure drop caused by perforated ribs reduces the required pumping power, but does not improve the thermal performance.

CITED BY
  1. Ahn H. S., Lee S. W., Lau S. C., Banerjee D., Mass (Heat) Transfer Downstream of Blockages With Round and Elongated Holes in a Rectangular Channel, Journal of Heat Transfer, 129, 12, 2007. Crossref

  2. Jia R. , Sunde´n B. , Faghri M. , Computational Analysis of Heat Transfer Enhancement in Square Ducts With V-Shaped Ribs: Turbine Blade Cooling , Journal of Heat Transfer, 127, 4, 2005. Crossref

  3. Dabiri Dana, Digital particle image thermometry/velocimetry: a review, Experiments in Fluids, 46, 2, 2009. Crossref

  4. Moon S. W. , Lau S. C. , Heat Transfer Between Blockages With Holes in a Rectangular Channel , Journal of Heat Transfer, 125, 4, 2003. Crossref

  5. Lau S. C., Cervantes J., Han J. C., Rudolph R. J., Internal Cooling Near Trailing Edge of a Gas Turbine Airfoil With Cooling Airflow Through Blockages With Holes, Journal of Turbomachinery, 130, 3, 2008. Crossref

  6. Lau S.C., Cervantes J., Han J.C., Rudolph R.J., Flannery K., Measurements of wall heat (mass) transfer for flow through blockages with round and square holes in a wide rectangular channel, International Journal of Heat and Mass Transfer, 46, 21, 2003. Crossref

  7. Goldstein R.J, Eckert E.R.G, Ibele W.E, Patankar S.V, Simon T.W, Kuehn T.H, Strykowski P.J, Tamma K.K, Bar-Cohen A, Heberlein J.V.R, Davidson J.H, Bischof J, Kulacki F.A, Kortshagen U, Garrick S, Heat transfer: a review of 1998 literature, International Journal of Heat and Mass Transfer, 44, 2, 2001. Crossref

  8. Superposition Method in One-Dimensional Transient Heat Conduction Problems, in Solving Direct and Inverse Heat Conduction Problems, 2006. Crossref

  9. Zheng Daren, Wang Xinjun, Yuan Qi, The flow and heat transfer characteristics in a rectangular channel with convergent and divergent slit ribs, International Journal of Heat and Mass Transfer, 141, 2019. Crossref

  10. Ye Yi, Li Xueying, Ren Jing, Jiang Hongde, Split of heat transfer regions and flow characteristics of perforated blockages with inclined holes for trailing edge cooling, Numerical Heat Transfer, Part A: Applications, 75, 1, 2019. Crossref

  11. Kowalewski Tomasz, Ligrani Phillip, Dreizler Andreas, Schulz Christof, Fey Uwe, Temperature and Heat Flux, in Springer Handbook of Experimental Fluid Mechanics, 2007. Crossref

  12. Ali Md Shaukat, Tariq Andallib, Gandhi B. K., Role of Chamfering Angles and Flow Through Slit on Heat Transfer Augmentation Behind a Surface-Mounted Rib, Journal of Heat Transfer, 138, 11, 2016. Crossref

  13. Liu Jian, Hussain Safeer, Wang Wei, Xie Gongnan, Sundén Bengt, Experimental and numerical investigations of heat transfer and fluid flow in a rectangular channel with perforated ribs, International Communications in Heat and Mass Transfer, 121, 2021. Crossref

  14. Nonino C., Comini G., Convective heat transfer in ribbed square channels, International Journal of Numerical Methods for Heat & Fluid Flow, 12, 5, 2002. Crossref

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