Library Subscription: Guest
Journal of Flow Visualization and Image Processing

Published 4 issues per year

ISSN Print: 1065-3090

ISSN Online: 1940-4336

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: 0.6 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: 0.00013 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: 0.14 SJR: 0.201 SNIP: 0.313 CiteScore™:: 1.2 H-Index: 13

Indexed in

NONINTRUSIVE EXPERIMENTAL STUDY OF NATURAL CONVECTION IN AN OPEN SQUARE CAVITY AT DIFFERENT INCLINATIONS

Volume 27, Issue 3, 2020, pp. 333-357
DOI: 10.1615/JFlowVisImageProc.2020031075
Get accessGet access

ABSTRACT

In this paper, a natural convection study of an open square cavity is carried out in order to understand the heat transfer and the fluid flow inside the cavity. The rectangular cavity considered in this work has a square cross section and is made of two adiabatic walls and an isothermal wall. The thermally active wall is maintained at a relatively higher temperature than the ambient temperature. Experiments are performed for three different Rayleigh numbers for five different inclinations (from side wall open to top wall open) with air (Pr = 0.71) as the working fluid. A nonintrusive optical technique (Mach-Zehnder interferometer) is employed to capture the depth-averaged two-dimensional steady-state temperature field in the cavity. In addition to that, smoke visualization is also carried out to see the flow behavior inside the cavity. The physics of fluid flow has been discussed with the help of interferograms, corresponding two-dimensional temperature field, and smoke visualization results. The losses due to natural convection at different orientations have been quantified and are presented in terms of Nusselt numbers on the thermally active wall. The average heat transfer rates on the thermally active wall are found to be dependent on the orientation of the cavity. As the cavity is rotated such that the open face moves from the side to top, it is noted that the average Nusselt number decreases. However, when the opening of the cavity is at the top, there is a sudden increment in heat transfer due to Rayleigh-Benard convection in the cavity. The experimentally obtained average Nusselt numbers have been compared with those obtained by numerical simulations and good agreement between these two results is seen. The study reveals that higher driving potential for the higher angle of inclination led to higher heat transfer.

REFERENCES
  1. Cha, S.S. and Choi, K.J., An Interferometric Investigation of Open-Cavity Natural-Convection Heat Transfer, Exp. Heat Transf., vol. 2, no. 1, pp. 27-40, 1989.

  2. Chakroun, W., Elsayed, M.M., and Al-Fahed, S.F., Experimental Measurements of Heat Transfer Coefficient in a Partially/Fully Opened Tilted Cavity, J. Solar Energy Eng., vol. 119, no. 4, pp. 298-303, 1997.

  3. Chan, Y.L. and Tien, C.L., A Numerical Study of Two-Dimensional Laminar Natural Convection in Shallow Open Cavities, Int. Commun. Heat Mass Transf., vol. 28, no. 3, pp. 603-612, 1985a.

  4. Chan, Y.L. and Tien, C.L., A Numerical Study of Two-Dimensional Natural Convection in Square Open Cavities, Numer. Heat Transf., vol. 8, no. 1, pp. 65-80, 1985b.

  5. Hess, C.F. and Henze, R.H., Experimental Investigation of Natural Convection Losses from Open Cavities, J. Heat Transf., vol. 106, no. 2, pp. 333-338, 1984.

  6. Hinojosa, J.F., Alvarez, G., and Estrada, C.A., Three-Dimensional Numerical Simulation of the Natural Convection in an Open Tilted Cubic Cavity, RevistaMexicana Fisica, vol. 52, no. 2, pp. 111-119, 2006.

  7. Juarez, J.O. Hinojosa, J.F. Xaman, J.P., and Tello, M.P., Numerical Study of Natural Convection in an Open Cavity Considering Temperature-Dependent Fluid Properties, Int. J. Therm. Sci., vol. 50, no. 11, pp. 2184-2197, 2011.

  8. Khanafer, K. and Vafai, K., Effective Boundary Conditions for Buoyancy-Driven Flows and Heat Transfer in Fully Open-Ended Two-Dimensional Enclosures, Int. J. Heat Mass Transf., vol. 45, no. 12, pp. 2527-2538, 2002.

  9. Mishra, D., Muralidhar, K., and Munshi, P., Performance Evaluation of Fringe Thinning Algorithms for Interferometric Tomography, Optics Lasers Eng., vol. 30, nos. 3-4, pp. 229-249, 1998.

  10. Miyamoto, M., Kuehn, T.H., Goldstein, R.J., and Katoh, Y., Two-Dimensional Laminar Natural Convection Heat Transfer from a Fully or Partially Open Square Cavity, Numer. Heat Transf., vol. 15, no. 4, pp. 411-430, 1989.

  11. Mohamad, A.A., Natural Convection in Open Cavities and Slots, Numer. Heat Transf., Part A: Appl., vol. 27, no. 6, pp. 705-716, 1995.

  12. Montiel-Gonzalez, M. Hinojosa, J.F., Villafan-Vidales, H.I., Bautista-Orozco, A., and Estrada, C.A., Theoretical and Experimental Study of Natural Convection with Surface Thermal Radiation in a Side Open Cavity, Appl. Therm. Eng., vol. 75, pp. 1176-1186, 2015.

  13. Penot, F., Numerical Calculation of Two-Dimensional Natural Convection in Isothermal Open Cavities, Numer. Heat Transf., vol. 5, no. 4, pp. 421-437, 1982.

  14. Prakash, M., Kedare, S.B., and Nayak, J.K., Numerical Study of Natural Convection Loss from Open Cavities, Int. J. Therm. Sci., vol. 51, pp. 23-30, 2012.

  15. Quere, P.Le., Humphrey, J.A.C., and Sherman, F.S., Numerical Calculation of Thermally Driven Two-Dimensional Unsteady Laminar Flow in Cavities of Rectangular Cross Section, Numer. Heat Transf., vol. 4, no. 3, pp. 249-283, 1981.

  16. Showole, R.A. and Tarasuk, J.D., Experimental and Numerical Studies of Natural Convection with Flow Separation in Upward-Facing Inclined Open Cavities, J. Heat Transf., vol. 115, no. 3, pp. 592-605, 1993.

CITED BY
  1. Liu Yang, Free convection and heat transfer characteristics in differentially heated finned cavities with inclination, International Journal of Thermal Sciences, 182, 2022. Crossref

Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections Prices and Subscription Policies Begell House Contact Us Language English 中文 Русский Português German French Spain