{"title":"Heat Transfer Characteristics and Fluid Flow past Staggered Flat-Tube Bank Using CFD","authors":"Zeinab Sayed Abdel-Rehim","volume":82,"journal":"International Journal of Mechanical and Mechatronics Engineering","pagesStart":1917,"pagesEnd":1924,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/16948","abstract":"
A computational fluid dynamic (CFD-Fluent 6.2) for two-dimensional fluid flow is applied to predict the pressure drop and heat transfer characteristics of laminar and turbulent flow past staggered flat-tube bank. Effect of aspect ratio ((H\/D)\/(L\/D)) on pressure drop, temperature, and velocity contour for laminar and turbulent flow over staggered flat-tube bank is studied. The theoretical results of the present models are compared with previously published experimental data of different authors. Satisfactory agreement is demonstrated. Also, the comparison between the present study and others analytical methods for the Re number with Nu number is done. The results show as the Reynolds number increases the maximum velocity in the passage between the upper and lower tubes increases. The comparisons show a fair agreement especially in the turbulent flow region. The good agreement of the data of this work with these recommended analytical methods validates the current study.<\/p>\r\n","references":"[1] Wang, Y. Q., \u201cLaminar flow through a staggered tube bank\u201d, Journal of \r\nThermo-physics and Heat Transfer, 18: 4, 2004, pp. 557\u2013559. \r\n[2] Zhukauskas A., \u201cConvective heat transfer in cross flow\u201d, Handbook of \r\nsingle-phase convective heat transfer, Wiley & Sons, New York, 1987. \r\n[3] Zdravistch F., C. Fletcher, M. Behnia, \u201cNumerical laminar and turbulent \r\nfluid flow and heat transfer predictions in tube banks\u201d, Int. J. Num. \r\nMeth. Heat Fluid Flow 5: 8, 1995, pp. 717\u2013733. \r\n[4] Wang, Y. Q., Penner, L. A., and Ormiston, S. J., \u201cAnalysis of laminar \r\nforced convection of air for cross flow in banks of staggered tubes\u201d, \r\nNumerical Heat Transfer, Part A, Applications, 38: 8, 2000, pp. 819\u2013\r\n845. \r\n[5] Hausen H., \u201cHeat Transfer from Tubes in Counter Flow, Parallel Flow \r\nand Cross Flow\u201d, McGraw H. -Hill, USA, 1983, p. 54. \r\n[6] Hilpert, R., W rmeabgabe Von geheizten Dr hten und Rohren, Forsch. \r\nGeb. Ingenieurwes, 4, 1933, pp. 215-224. \r\n[7] Pope, S. B., \u201cTurbulent flows\u201d, Cambridge University Press: \r\nCambridge, 2000. \r\n[8] Launder B. E. and Sharma B. I., \u201cApplication of the energy-dissipation \r\nmodel of turbulence to the calculation of flow near a spinning disc\u201d, \r\nLetters in Heat and Mass Transfer, 1, 1974, pp. 131-138. \r\n[9] Benarji N., C. Balaji, S. P. Venkateshan, \u201cUnsteady fluid flow and heat \r\ntransfer over a bank of flat tubes\u201d, Heat Mass Transfer, 2008. \r\n[10] Zhukauskas A. \u201cHeat transfer from tubes in cross flow\u201d, Advances in \r\nHeat Transfer, 8, 1972, pp. 93-160. \r\n[11] Bahaidarah HMS, Anand NK, Chen HC, \u201cA numerical study of fluid \r\nflow and heat transfer over a bank of flat tubes\u201d, Heat Transfer Part A \r\n48, 2005, pp. 359\u2013385. \r\n[12] Schmidt Th., \u201cIn Heat transfer of finned tube bundles in cross flow\u201d, \r\neds. Zukauskas A., and Hewitt, G., p. 172, Hemisphere Publishing, \r\nWashington, D.C., 1988. \r\n[13] Yudin V. F., and Tochtarova, L. S., \u201cIn Heat transfer of finned tube \r\nbundles in cross flow\u201d, eds. Zukauskas A., and Hewitt, G., p. 173, \r\nHemisphere Publishing, Washington, D.C., 1988. \r\n[14] Gnielinski V., W rme bergang bei Querstr mung durch einzelne \r\nRohrreihen und Rohrb ndel, VDI-W rmeatlas, 2. Auflage, Abschnitt \r\nGe, 1974. ","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 82, 2013"}