Kontrol Çubukları Kullanarak Yan Yana Kare Prizmalar Etrafındaki Akış Kontrolü

Mehmet Seyhan; Mustafa Sarıoğlu

doi:10.35414/akufemubid.601054

Araştırma Makalesi

Control of flow around Side by Side Square Prisms Using Control Rods

Yıl 2020, , 543 - 550, 30.06.2020

Mehmet Seyhan , Mustafa Sarıoğlu

https://doi.org/10.35414/akufemubid.601054

Öz

Flow characteristics around side by side square prisms with control rods are numerically investigated at different gap ratios (g*) changing between 0.5 and 6 for Re = 73. Four different flow patterns, which are single street mode, irregular street mode, regular street mode and two street mode, are identified based on the gap ratio. Maximum drag reduction (%52) is obtained at g* = 6. The mean lift coefficient has a symmetric variation between these gap ratios for the upper and lower square prisms. It can be concluded that the control rod is an effective flow control method in terms of drag reduction.

Anahtar Kelimeler

Control rod, Square prism, Side by side, Drag coefficient

Kaynakça

Akansu, Y.E., Karakaya, F., and Şanlısoy, A., 2013. Active Control of Flow around NACA 0015 Airfoil by Using DBD Plasma Actuator. In: EPJ Web of Conferences. EDP Sciences, 1008.
Akansu, Y.E., Ozmert, M., and Firat, E., 2011. The effect of attack angle to vortex shedding phenomenon of flow around a square prism with a flow control rod. ISI BILIMI VE TEKNIGI DERGISI-JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY, 31 (1), 109–120.Alam, M.M. and Zhou, Y., 2013. Intrinsic features of flow around two side-by-side square cylinders. Physics of Fluids, 25 (8), 085106.
Bearman, P.W. and Harvey, J.K., 1993. Control of circular cylinder flow by the use of dimples. AIAA journal, 31 (10), 1753–1756.
Burattini, P. and Agrawal, A., 2013. Wake interaction between two side-by-side square cylinders in channel flow. Computers & Fluids, 77, 134–142.
Chatterjee, D. and Amiroudine, S., 2010. Two-dimensional mixed convection heat transfer from confined tandem square cylinders in cross-flow at low Reynolds numbers. International Communications in Heat and Mass Transfer, 37 (1), 7–16.
Durga Prasad, A.V.V.S. and Dhiman, A.K., 2014. CFD Analysis of Momentum and Heat Transfer Around a Pair of Square Cylinders in Side-by-Side Arrangement. Heat Transfer Engineering, 35 (4), 398–411.
Fırat, E., Akansu, Y.E., and Akilli, H., 2015. Flow past a square prism with an upstream control rod at incidence to uniform stream. Ocean Engineering, 108, 504–518.
Gad-el-Hak, M., 1996. Modern developments in flow control. Applied Mechanics Reviews, 49 (7), 365–379.
Hu, J.C. and Zhou, Y., 2008. Flow structure behind two staggered circular cylinders. Part 1. Downstream evolution and classification. Journal of Fluid Mechanics, 607 (2008), 51–80.
Igarashi, T., 1997. Drag reduction of a square prism by flow control using a small rod. Journal of Wind Engineering and Industrial Aerodynamics, 69, 141–153.
Inoue, O., Iwakami, W., and Hatakeyama, N., 2006. Aeolian tones radiated from flow past two square cylinders in a side-by-side arrangement. Physics of Fluids, 18 (4).
Kang, S., 2003. Characteristics of flow over two circular cylinders in a side-by-side arrangement at low Reynolds numbers. Physics of Fluids, 15 (9), 2486–2498.
Khanduri, A.C., Stathopoulos, T., and Bédard, C., 1998. Wind-induced interference effects on buildings — a review of the state-of-the-art. Engineering Structures, 20 (7), 617–630.
Kondo, N., Nishimura, T., and Yamada, S., 1996. Third-order upwind finite element simulation of flow around two square cylinders. International Journal of Computational Fluid Dynamics, 7 (1–2), 143–153.
Li, Z., Navon, I.M., Hussaini, M.Y., and Le Dimet, F.X., 2003. Optimal control of cylinder wakes via suction and blowing. Computers and Fluids, 32 (2), 149–171.
Mansingh, V. and Oosthuizen, P.H., 1990. Effects of splitter plates on the wake flow behind a bluff body. AIAA journal, 28 (5), 778–783.
Mizushima, J. and Hatsuda, G., 2014. Nonlinear interactions between the two wakes behind a pair of square cylinders. J. Fluid Mech., 759, 295–320.
Müller-Vahl, H.F., Strangfeld, C., Nayeri, C.N., Paschereit, C.O., and Greenblatt, D., 2015. Control of Thick Airfoil, Deep Dynamic Stall Using Steady Blowing. AIAA Journal, 53 (2), 277–295.Roth, J.R., 2003. Aerodynamic flow acceleration using paraelectric and peristaltic electrohydrodynamic effects of a one atmosphere uniform glow discharge plasma. Physics of Plasmas (1994-present), 10 (5), 2117–2126.
Sarioglu, M., Akansu, Y.E., and Yavuz, T., 2005. Control of the flow around square cylinders at incidence by using a rod. AIAA journal, 43 (7), 1419–1426.
Sarioglu, M., Akansu, Y.E., and Yavuz, T., 2006. Flow around a rotatable square cylinder-plate body. AIAA journal, 44 (5), 1065–1072.
Sohankar, A. and Etminan, A., 2009. Forced‐convection heat transfer from tandem square cylinders in cross flow at low Reynolds numbers. International Journal for Numerical Methods in Fluids, 60 (7), 733–751.
Yen, S.C. and Liu, J.H., 2011. Wake flow behind two side-by-side square cylinders. International Journal of Heat and Fluid Flow, 32 (1), 41–51.
Zhang, Y.Y., Huang, D.G., Sun, X.J., and Wu, G.Q., 2010. Exploration in optimal design of an airfoil with a leading edge rotating cylinder. Journal of Thermal Science, 19 (4), 318–325.
Zhao, M., 2013. Flow induced vibration of two rigidly coupled circular cylinders in tandem and side-by-side arrangements at a low reynolds number of 150. Physics of Fluids, 25 (12).
Zhou, Y., Feng, S.X., Alam, M.M., and Bai, H.L., 2009. Reynolds number effect on the wake of two staggered cylinders. Physics of Fluids, 21 (12), 125105.