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Harimi, S., Marjani, Azam. (1398). Numerical investigation on the effects of six control rods arranged in equilateral triangular configurations on fluid flow and forced convection heat transfer from a circular cylinder. فناوری آموزش, 9(1), 33-45. doi: 10.22061/jcarme.2019.2716.1274
S. Harimi; Azam Marjani. "Numerical investigation on the effects of six control rods arranged in equilateral triangular configurations on fluid flow and forced convection heat transfer from a circular cylinder". فناوری آموزش, 9, 1, 1398, 33-45. doi: 10.22061/jcarme.2019.2716.1274
Harimi, S., Marjani, Azam. (1398). 'Numerical investigation on the effects of six control rods arranged in equilateral triangular configurations on fluid flow and forced convection heat transfer from a circular cylinder', فناوری آموزش, 9(1), pp. 33-45. doi: 10.22061/jcarme.2019.2716.1274
Harimi, S., Marjani, Azam. Numerical investigation on the effects of six control rods arranged in equilateral triangular configurations on fluid flow and forced convection heat transfer from a circular cylinder. فناوری آموزش, 1398; 9(1): 33-45. doi: 10.22061/jcarme.2019.2716.1274

Numerical investigation on the effects of six control rods arranged in equilateral triangular configurations on fluid flow and forced convection heat transfer from a circular cylinder

Journal of Computational & Applied Research in Mechanical Engineering (JCARME)
مقاله 3، دوره 9، شماره 1 - شماره پیاپی 17، مهر 2019، صفحه 33-45    اصل مقاله (1.71 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22061/jcarme.2019.2716.1274
نویسندگان
S. Harimi؛ Azam Marjani*
Department of Chemistry, Arak Branch, Islamic Azad University, Arak, Iran
تاریخ دریافت: 01 تیر 1396،  تاریخ بازنگری: 30 بهمن 1397،  تاریخ پذیرش: 06 اسفند 1397 
چکیده
The present work deals with heat transfer characteristics as well as fluid flow patterns in laminar flow regime for a circular cylinder with six control rods arranged in equilateral triangular geometries. The computations have been carried out by a finite volume approach using the overset grid method. The unsteady flow at Re= 200 and Pr= 0.7 and 7.0 was examined. The effect of the control rods on suppression of the fluid forces applied on a main cylinder has been investigated by numerical solution of the Navier-Stokes equations. Based on the results obtained, the arrangement employed in this study indicated the significant performance in reducing the oscillatory force coefficients of the primary cylinder. Except for some gap ratios, it is indicated that both drag and lift coefficients are much lower than that for a single cylinder. Moreover, forced convection heat transfer was calculated using local and mean Nusselt numbers at the surface of the cylinders. The instantaneous streamlines, the vortices and isothermal contours were presented in order to analyze the temperature field and flow field around the cylinders.
کلیدواژه‌ها
Control rod؛ Equilateral triangular؛ Vortex street؛ heat transfer؛ Overset grid method
مراجع
[1] C. Bartoli, S. Faggiani and D. Rossi, "Forced and mixed convection heat transfer from an array of cylinders to a liquid submerged jet", Revue Generale de Thermique, Vol. 37, pp. 431–439, (1998). 

[2] N. Mahir and Z. Altac, "Numerical investigation of convective heat transfer in unsteady flow past two cylinders in tandem arrangements", International Journal of Heat and Fluid Flow, Vol. 29, pp. 1309–1318, (2008). 

[3] Y. T. Wang, Z. M. Yan and H. M. Wang, "Numerical simulation of low-Reynolds number flows past two tandem cylinders of different diameters", Water Science and Engineering, Vol. 6, No. 4, pp. 433–445, (2013). 

[4] C. H. Kim, "The hydrodynamic interaction between two cylindrical bodies floating in beam seas. Stevens Institute of Technology", Report SIT-OE-72-10, Stevens Institute of Technology, Hoboken, New Jersey, (1972).

[5] T. Igarashi, "Drag reduction of a square prism by flow control using a small rod", Journal of Wind Engineering and Industrial Aerodynamics, Vol. 69–71, pp. 141–153, (1997). 

[6] C. Dalton, Y. Xu and J. C. Owen, "The suppression of lift on a circular cylinder due to vortex shedding at moderate Reynolds numbers", Journal of Fluids and Structures, Vol. 15, No. 3, pp. 617-628, (2001). 

[7] M. M. Alam, H. Sakamoto and M. Moriya, "Reduction of fluid forces acting on a single circular cylinder and two circular cylinders by using tripping rods", Journal of Fluids and Structures, Vol. 18, pp. 347–366, (2003). 

[8] Z. Huang, J. A. Olson, R. J. Kerekes and S. I. Green, "Numerical simulation of the flow around rows of cylinders", Computers & Fluids, Vol.  35, pp. 485–491, (2006). 

[9] B. S. Carmo, S. J. Sherwin, P. W. Bearman and R. H. J. Willden, "Flow-induced vibration of a circular cylinder subjected to wake interference at low Reynolds number", Journal of Fluids and Structures, Vol. 27, pp. 503–522, (2011). 

[10] L. Lu, M. M. Liu, B. Teng, Z. D. Cui, G. Q. Tang, M. Zhao and L. Cheng, "Numerical investigation of fluid flow past circular cylinder with multiple control rods", Journal of Fluids and Structures, Vol. 48, pp. 235–259 (2014). 

[11] H. Wu, D. P. Sun, L. Lu, B. Teng, G. Q. Tang and J. N. Song, "Experimental investigation on the suppression of vortex-induced vibration of long flexible riser by multiple control rods", Journal of Fluids and Structures, Vol. 30, pp. 115–132, (2012). 

[12] H. Zhu and J. Yao, "Numerical evaluation of passive control of VIV by small control rods", Applied Ocean Research, Vol. 51, pp. 93–116, (2015). 

[13] S. Harimi, A. Marjani, and S. Moradi, "Numerical simulation of fluid flow and forced convection heat transfer around a circular cylinder with control rods located in equilateral triangular arrangement", Journal of mechanical science and technology, Vol. 30, No. 90, pp. 4239-4246 (2016). 

[14] H. S. Tang, S. C. Jones and F. Sotiropoulos, "An overset-grid method for 3D unsteady incompressible flows", Journal of Computational Physics, Vol. 191, pp. 567–600, (2003). 

[15] J. Cai, H. M. Tsai and F. Liu, "Numerical simulation of vertical flows in the near field of jets from notched circular nozzles", Computers & Fluids, Vol. 39, pp. 539–552 (2010). 

[16] C. M. Rhie and W. L. Chow, "Numerical study of the turbulent flow past an airfoil with trailing edge separation", AIAA Journal, Vol. 21, No. 11, pp. 1525–1532, (1983).

[17] M. Braza, P. Chassaing, and H.   HaMinh, "Numerical study and physical analysis of the pressure and velocity fields in the near wake of a circular cylinder", Journal of Fluid Mechanics, Vol. 165, pp. 79–130, (1986). 

[18] C. H. K. Williamson, "2-D and3-D aspects of the wake of a cylinder and their relation to wake computations", American Mathematical Society, Lectures in Applied Mathematics (1991).

[19] S. W. Churchill, M. J. Bernstein, "A correlating equation for forced convection from gases and liquids to a circular cylinder in cross flow", Journal of Heat Transfer, Vol. 99, pp. 300–306 (1977). 

[20] R. Hilpert, Geb. Forsch, Ingenieurwes, Vol. 4, pp. 215 (1933).

[21] J. W. He, R. Glowinski, R. Metcalfe, A. Nordlander, and J. Periaux, "Active control and drag optimization for flow past a circular cylinder I: oscillatory cylinder rotation", Journal of Compuational Physics, Vol. 163, pp. 83–117 (2000). 

[22] M. Zhao, L. Cheng, B. Teng and D. F. Liang, "Numerical simulation of viscous flow past two circular cylinders of different diameters", Applied Ocean Research, Vol. 27, pp. 39–55 (2005). 

[23] S. Sarkar, A. Dalal and G. Biswas, "Mixed convective heat transfer from two identical square cylinders in cross flow at Re =100", International Journal of Heat and Mass Transfer, Vol. 53, pp. 2628–2642 (2010). 

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