Flow around a flat tube is studied numerically. Reynolds number is defined base on equivalent circular tube and it is varied in range of 100 to 300. Equations are solved by using finite volume method and results are presented in form of drag and lift coefficient. Results show that drag coefficient of flat tube is up to 66% lower than circular tube with equivalent diameter. In addition, by increasing *l<\/em>\/D from 1 to 2, the drag coefficient of flat tube is decreased about 14-27%.<\/p>\r\n","references":"[1]\tA. Zukauskas, J. Ziugzda, Heat transfer of a cylinder in crossflow, Hemisphere Publishing Corp., Washington, DC., 1985.\r\n[2]\tM. Zdravkovich, Flow around circular cylinders, vol. 1. Fundamentals, Oxford University Press, 1997.\r\n[3]\tL. Rocha, F. Saboya, J. Vargas, \"A comparative study of elliptical and circular sections in one-and two-row tubes and plate fin heat exchangers,\u201d Int. J. Heat Fluid Flow, vol. 18, 1997, pp. 247-252.\r\n[4]\t A. Safwat Wilson, M. Khalil Bassiouny, \"Modeling of heat transfer for flow across tube banks,\u201d Chem. Eng. Process. Process Intensif., vol. 39, 2000, pp. 1-14.\r\n[5]\tA. Nouri-Borujerdi, A. Lavasani, \"Flow Visualization Around a Non-Circular Tube,\u201d International Journal of Engineering Transactions B: Applications, vol. 19, 2006, pp. 73.\r\n[6]\tA. Nouri-Borujerdi, A. Lavasani, \"Drag of a single noncircular cylinder,\u201d Proc. 18th Int. Symp. Transport Phenomena, 2007, pp. 27-30.\r\n[7]\tA. Nouri-Borujerdi, A.M. Lavasani, \"Pressure Loss and Heat Transfer Characterization of a Cam-Shaped Cylinder at Different Orientations,\u201d ASME Journal of Heat Transfer, vol. 130, 2008, pp. 124503-124503.\r\n[8]\tA. Nouri-Borujerdi, A. Lavasani, \"Experimental study of forced convection heat transfer from a cam shaped tube in cross flows,\u201d Int. J. Heat Mass Transfer, vol. 50, 2007, pp. 2605-2611.\r\n[9]\tA.M.A. Lavasani, \"The Effect of Angle of Attack on Pressure Drag from a Cam Shaped Tube,\u201d World Academy of Science, Engineering and Technology, vol. 5, 2011, pp. 204-208.\r\n[10]\tA.M.A. Lavasani, H. Bayat, \"Heat Transfer from Two Cam Shaped Cylinders in Tandem Arrangement,\u201d World Academy of Science, Engineering and Technology, International Science Index 61, 6(1), 2012, pp. 1095 - 1098.\r\n[11]\tA.M.A. Lavasani, H. Bayat, \"Heat Transfer from Two Cam Shaped Cylinders in Side-by-Side Arrangement,\u201d World Academy of Science, Engineering and Technology, International Science Index 67, 6(7), 2012, pp. 1008 - 1011.\r\n[12]\tA.M.A. Lavasani, H. Bayat, \"Flow around Two Cam Shaped Cylinders in Tandem Arrangement,\u201d World Academy of Science, Engineering and Technology, International Science Index 67, 6(7) 2012, pp. 1079 - 1082.\r\n[13]\tA. Mirabdolah Lavasani, H. Bayat, T. Maarefdoost, \"Experimental Study of Convective Heat Transfer from In-Line Cam Shaped Tube Bank in Crossflow,\u201d Appl. Therm. Eng., vol. 65, 2014, pp. 85\u201393.\r\n[14]\tH. Bayat, A. Mirabdolah Lavasani, T. Maarefdoost, \"Experimental Study of Thermal-Hydraulic Performance of Cam-Shaped Tube bundle with Staggered Arrangement,\u201d Energy Conversion and Management, vol. 85, 2014, pp. 470-476.\r\n[15]\tH.M. Bahaidarah, N. Anand, H. Chen, \"A numerical study of fluid flow and heat transfer over a bank of flat tubes,\u201d Numerical Heat Transfer, Part A: Applications, vol. 48, 2005, pp. 359-385.\r\n[16]\tN. Benarji, C. Balaji, S. Venkateshan, \"Unsteady fluid flow and heat transfer over a bank of flat tubes,\u201d Heat and mass transfer, vol. 44, 2008, pp. 445-461.\r\n[17]\tS. Patankar, Numerical heat transfer and fluid flow, CRC Press, 1980.\r\n[18]\tJ. Meneghini, F. Saltara, C. Siqueira, J. Ferrari Jr, \"Numerical simulation of flow interference between two circular cylinders in tandem and side-by-side arrangements,\u201d Journal of fluids and structures, vol. 15, 2001, pp. 327-350.\r\n[19]\tH. Ding, C. Shu, K. Yeo, D. Xu, \"Numerical simulation of flows around two circular cylinders by mesh\u2010free least square\u2010based finite difference methods,\u201d International journal for numerical methods in fluids, vol. 53, 2007, pp. 305-332.\r\n[20]\tN. Mah\u00edr, Z. Alta\u00e7, \"Numerical investigation of convective heat transfer in unsteady flow past two cylinders in tandem arrangements,\u201d International Journal of Heat and Fluid Flow, vol. 29, 2008, pp. 1309-1318.\r\n[21]\tC. Williamson, \"Oblique and parallel modes of vortex shedding in the wake of a circular cylinder at low Reynolds numbers,\u201d Journal of Fluid Mechanics, vol. 206, 1989, pp. 579-627.\r\n","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 92, 2014"}*