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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

Blockage Effects in Natural Convection in Differentially Heated Enclosures

Volume 8, Issue 1, 2001, pp. 55-72
DOI: 10.1615/JEnhHeatTransf.v8.i1.50
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ABSTRACT

Natural convection in a differentially heated enclosure filled with discrete solid objects is analyzed numerically. The effect of six square shaped solid objects on the natural convection in a rectangular enclosure of aspect ratio 2 is addressed for different solid geometrical arrangements and thermal conductivities. The investigation is performed for Ra = 1 × 105 and 1 × 107 for thermal conductivity ratio between the solid bodies and the fluid (kr) of 0.1, 1.0, 10 and 100. The problem aims to clarify the boundary effects associated with the location, size and the thermal conductivities of the solid objects. It is known that natural convection in porous media is highly affected by the boundary phenomena when high permeability is considered. Also, the problem has importance in understanding the thermal equilibrium between the solid and the fluid in permeable media, as well as other applications in which obstacles are unavoidable. It is found that placing the solid bodies near to the walls reduce the rate of heat transfer due to the blockage effects. But, placing low conductor bodies far from the boundary layer region may enhance the rate of heat transfer compared with enclosures without obstacles. Also, compared with low conductivity bodies, it is found that placing high conductor bodies within the boundary layer enhances the rate of heat transfer. As expected, it is shown that Prandtl number has a weak influence on the predictions for Pr ≥ 0.71.

CITED BY
  1. Jamalud-Din Sherifull-Din, Rees D. Andrew S., Reddy B. V. K., Narasimhan Arunn, Prediction of natural convection flow using network model and numerical simulations inside enclosure with distributed solid blocks, Heat and Mass Transfer, 46, 3, 2010. Crossref

  2. MERRIKH A.A., LAGE J.L., FROM CONTINUUM TO POROUS–CONTINUUM: THE VISUAL RESOLUTION IMPACT ON MODELING NATURAL CONVECTION IN HETEROGENEOUS MEDIA, in Transport Phenomena in Porous Media III, 2005. Crossref

  3. Narasimhan Arunn, Reddy B. V. K., Natural Convection Inside a Bidisperse Porous Medium Enclosure, Journal of Heat Transfer, 132, 1, 2010. Crossref

  4. Miansari Mehdi, Gorji M, Ganji D. D., Hooman Kamel, Comparison between continuum and porous continuum models in studying natural convection in porous cavity with random distribution of solid obstacles, International Journal of Numerical Methods for Heat & Fluid Flow, 25, 3, 2015. Crossref

  5. References, in Turbulence in Porous Media, 2012. Crossref

  6. Datta Priyankan, Mahapatra Pallab Sinha, Ghosh Koushik, Manna Nirmal K., Sen Swarnendu, Heat Transfer and Entropy Generation in a Porous Square Enclosure in Presence of an Adiabatic Block, Transport in Porous Media, 111, 2, 2016. Crossref

  7. Bhave Prasad, Narasimhan Arunn, Rees D.A.S., Natural convection heat transfer enhancement using adiabatic block: Optimal block size and Prandtl number effect, International Journal of Heat and Mass Transfer, 49, 21-22, 2006. Crossref

  8. Lage J.L., Junqueira S.L.M., De Lai F.C., Franco A.T., Aspect ratio effect on the prediction of boundary layer interference in steady natural convection inside heterogeneous enclosures, International Journal of Heat and Mass Transfer, 92, 2016. Crossref

  9. Braga Edimilson J., de Lemos Marcelo J.S., Heat transfer in enclosures having a fixed amount of solid material simulated with heterogeneous and homogeneous models, International Journal of Heat and Mass Transfer, 48, 23-24, 2005. Crossref

  10. Roslan R., Saleh H., Hashim I., Natural Convection in a Differentially Heated Square Enclosure with a Solid Polygon, The Scientific World Journal, 2014, 2014. Crossref

  11. References, in Turbulence in Porous Media, 2006. Crossref

  12. Merrikh Ali A., Lage José L., Natural convection in an enclosure with disconnected and conducting solid blocks, International Journal of Heat and Mass Transfer, 48, 7, 2005. Crossref

  13. Junqueira Silvio L. M., De Lai Fernando C., Franco Admilson T., Lage José L., Numerical Investigation of Natural Convection in Heterogeneous Rectangular Enclosures, Heat Transfer Engineering, 34, 5-6, 2013. Crossref

  14. Braga Edimilson J., de Lemos Marcelo J.S., Laminar natural convection in cavities filled with circular and square rods, International Communications in Heat and Mass Transfer, 32, 10, 2005. Crossref

  15. Hooman K., Merrikh A. A., Theoretical Analysis of Natural Convection in an Enclosure Filled with Disconnected Conducting Square Solid Blocks, Transport in Porous Media, 85, 2, 2010. Crossref

  16. Mahapatra Pallab S., De Somnath, Ghosh Koushik, Manna Nirmal K., Mukhopadhyay Achintya, Heat Transfer Enhancement and Entropy Generation in a Square Enclosure in the Presence of Adiabatic and Isothermal Blocks, Numerical Heat Transfer, Part A: Applications, 64, 7, 2013. Crossref

  17. 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, Heberlein J.V.R, Davidson J.H, Bischof J, Kulacki F.A, Kortshagen U, Garrick S, Heat transfer––a review of 2001 literature, International Journal of Heat and Mass Transfer, 46, 11, 2003. Crossref

  18. Imani Gholamreza, Hooman Kamel, Lattice Boltzmann Pore Scale Simulation of Natural Convection in a Differentially Heated Enclosure Filled with a Detached or Attached Bidisperse Porous Medium, Transport in Porous Media, 116, 1, 2017. Crossref

  19. Lima Thiago Parente, Ganzarolli Marcelo Moreira, A heatline approach on the analysis of the heat transfer enhancement in a square enclosure with an internal conducting solid body, International Journal of Thermal Sciences, 105, 2016. Crossref

  20. Hu Jiang-Tao, Ren Xiu-Hong, Liu Di, Zhao Fu-Yun, Wang Han-Qing, Conjugate natural convection inside a vertical enclosure with solid obstacles of unique volume and multiple morphologies, International Journal of Heat and Mass Transfer, 95, 2016. Crossref

  21. de Lemos Marcelo J. S., Braga Edimilson J., Use of porous-continuum and continuum models for determining the permeability of porous cavities under turbulent free convection, Numerical Heat Transfer, Part B: Fundamentals, 73, 2, 2018. Crossref

  22. Qiu Hongtao, Lage José L., Junqueira Silvio L. M., Franco Admilson T., Predicting the Nusselt Number of Heterogeneous (Porous) Enclosures Using a Generic Form of the Berkovsky–Polevikov Correlations, Journal of Heat Transfer, 135, 8, 2013. Crossref

  23. Moussa Mirehei S., Lage José L., The Rayleigh Number Effect on the Periodic Heating of an Enclosure Filled With a Fluid and Discrete Solid Blocks, Journal of Heat Transfer, 140, 10, 2018. Crossref

  24. Bartlett S. J., Yung Y. L., Convective flow in the presence of a small obstacle: Symmetry breaking, attractors, hysteresis, and information, Physical Review E, 99, 3, 2019. Crossref

  25. Karki Pawan, Yadav Ajay Kumar, Arumuga Perumal D., Study of Adiabatic Obstacles on Natural Convection in a Square Cavity Using Lattice Boltzmann Method, Journal of Thermal Science and Engineering Applications, 11, 3, 2019. Crossref

  26. Santos Paulo R.M., Lugarini Alan, Junqueira Silvio L.M., Franco Admilson T., Natural convection of a viscoplastic fluid in an enclosure filled with solid obstacles, International Journal of Thermal Sciences, 166, 2021. Crossref

  27. Hu Jiang-Tao, Mei Shuo-Jun, Liu Di, Zhao Fu-Yun, Wang Han-Qing, Hydromagnetic double diffusive moisture convection from an inclined enclosure inserted with multiple heat-generating electronic modules, International Journal of Thermal Sciences, 159, 2021. Crossref

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