Numerical investigations for flow past two square rods in staggered arrangement through Lattice Boltzmann method
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Abstract
A numerical study for two dimensional (2-D) incompressible flow past over two square rods in staggered arrangement detached with a rectangular control rod is conducted by applying single-relaxation-time lattice Boltzmann method (SRT-LBM). This study is conducted basically to reduce the fluid forces and to suppress the vortex shedding through passive control method under the effect of gap spacing between the rods and Reynolds number. The gap spacing (g = s/D) between the rods is taken as g = 1, 3 and 6 whereas, Reynolds number Re= u∞ D/γ is selected within the range of Re = 80 – 200. First validity of code and effect of computational domain along with effect of uniform inflow velocity is checked by considering upstream, downstream and height of computational domain respectively, at Lu = 7.5d, Ld = 30d and H = 14d. After that the effect of gap spacing and Reynolds number on flow structure mechanism is studied. The acquired results are obtained in terms of vorticity contour visualization, power spectrum analysis of lift coefficients and force statistics. Here, three different types of flow regimes, named as i) Irregular Single Bluff Body (ISBB), ii) Flip Flopping (FF) and iii) Anti Phase Synchronized (APS) flow regimes are observed at different values of gap spacing and Reynolds number. In study of force statistics, the values of mean drag coefficients (Cdmean), root mean square of drag coefficients (Cdrms), root mean square of lift coefficients (Clrms) and strouhal number (St) of two square rods are calculated. The values of mean drag coefficients for rod R1 is greater than that of rod R2. The Cdmean for R2 increases with increment in the values of Reynolds, while as Cdmean for R1 having mixed trend. The maximum value of Cdmean is attained at (g, Re) = (1,80) that is 1.8971 for R1 as compared to R2, where existing flow regime is the Irregular single bluff body (ISBB) flow regime. The largest value of Strouhal number is obtained for R2 at (g, Re) = (6, 150) that is 0.1608 along with Anti phase synchronized (APS) flow regime.
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Fransson JHM, Konieczny P, Alfredsson PH (2004) Flow around a porous rod subject to continuous suction or blowing. Journal of Fluids and Structures 19: 1031-1048. Link: https://bit.ly/3i7TgzJ
Fujisawa N, Asano Y, Arakawa C, Hashimoto T (2005) Computational and experimental study on flow around a rotationally oscillating circular rod in a uniform flow. Journal of Wind Engineering and Industrial Aerodynamics 93: 137-153. Link: https://bit.ly/3vKCFpE
Darekar RM, Sherwin SJ (2001) Flow past a bluff body with a wavy stagnation face. Journal of Fluids and Structure 15: 587-596. Link: https://bit.ly/3ib3Ea8
Williamson CHK (1985) Evolution of a single wake behind a pair of bluff bodies. Journal of Fluid Mechanics 159: 1-18. Link: https://bit.ly/3g2Hy6T
Kawamura T, Takami H, Kuwahara K (1986) Computation of high Reynolds number flow around a circular rod with surface roughness. Fluid Dynamics Research 1: 145. Link: https://bit.ly/3pnZayB
Zdravkovich MM (1987) The effect of interference between circular rods in cross flow. Journal of Fluids and Structures 1: 239-261. Link: https://bit.ly/34AsV5A
Mansingh V, Oosthuizen PH (1990) Effects of splitter plates on the wake flow behind a bluff body. AIAA Journal 28: 778-783. Link: https://bit.ly/2TAgkgt
Park WC, Higuchi H (1998) Numerical investigation of wake flow control by a splitter plate. KSME International Journal 12: 123-131. Link: https://bit.ly/3yTRTe0
Alam MM, Moriya M, Takai K, Sakamoto H (2002) Suppression of fluid forces acting on two square Prisms in a tandem arrangement by passive control of flow. Journal of Fluids and Structures 16: 1073-1092. Link: https://bit.ly/3iare6X
Texier A, Bustamante ASC, David L (2002) Contribution of a short separating plate on the control of the swirling process downstream a half-rod. Experimental Thermal and Fluid Science 26: 565-572.
Dutta S, Panigrahi PK, Muralidha K (2004) Effect of orientation on the wake of a square rod at low Reynolds numbers. Indian Journal of Engineering and Metrological Sciences 11: 447-459. Link: https://bit.ly/3caGzAA
Zhou L, Cheng M, Hung KC (2005) Suppression of fluid force on a square rod by flow control. Journal of Fluid and Structures 21: 51-167. Link: https://bit.ly/2RcB9O6
Agrawal A, Djenidi L, Antonia RA (2006) Investigation of flow around a pair of side-by-side square rods using the Lattice Boltzmann Method. Computers & Fluids 35: 1093-1107. Link: https://bit.ly/3fHogVJ
Shao C, Wang J (2007) Control of mean and fluctuating forces on a circular rod at high Reynolds numbers. Acta Mechanica Sinica 23: 133-143. Link: https://bit.ly/2SOQl4q
Guo Z, Liu H, Luo LS, Xu K (2008) A comparative study of the LBE and GKS methods for 2D near incompressible laminar flows. Journal of Computational Physics 227: 4955-4976. Link: https://bit.ly/2S2AmzM
Turki S (2008) Numerical simulation of passive control on vortex shedding behind square rod using splitter plate. Engineering Applications of Computational Fluid Mechanics 2: 514-524. Link: https://bit.ly/3yY020S
Vikram CK, Gowda YK, Ravindra HV, Gowda CG (2011) Numerical simulation of two dimensional unsteady flow past two square rods. International Journal of Technology Engineering System 2: 355-360. Link: https://bit.ly/2S6Jd3g
Yen SC, Liu JH (2011) Wake flow behind two side-by-side square rods. International Journal of Heat and Fluid Flow 32: 41-51. Link: https://bit.ly/2S2Aq2u
Ali MSM, Doolan CJ, Wheatley V (2011) Low Reynolds number flow over a square rod with a splitter plate. Physics of Fluids 23: 033602. Link: https://bit.ly/3vIiIzV
Perumal DA, Kumar GV, Dass AK (2012) Numerical simulation of viscous flow over a square rod using Lattice Boltzmann Method. Mathematical Physics. Link: https://bit.ly/3uRjg5r
Verma PL, Govardhan M (2011) Flow behind bluff bodies in side-by-side arrangement. Journal of Engineering Science and Technology 6: 745-768. Link: https://bit.ly/3vKla98
Islam SUl, Abbasi WS, Rahman H (2014) Force statistics and wake structure mechanism of flow around a square rod at low Reynolds numbers. International Journal of Mechanical, Aerospace, Industrial and Mechatronics Engineering 8: 1417-1423.
Golani R, Dhiman AK (2014) Fluid flow and heat transfer across a circular rod in the unsteady flow regime. International Journal of Engineering Science 3: 8-19. Link: https://bit.ly/3fHocVQ
Ma Y, Rashidi MM, Yang ZG (2019) Numerical simulation of flow past a square rod with a circular bar upstream and a splitter plate downstream. Journal of Hydrodynamics 31: 949-964. Link: https://bit.ly/2S1QT73
Chauhan MK, Dutta S, More BS, Gandhi BK (2018) Experimental investigation of flow over a square rod with an attached splitter plate at intermediate Reynolds number. Journal of Fluids and Structures 76: 319-335. Link: https://bit.ly/3wOEpyn
Nemati M, Abady ARSN, Toghraie D, Karimipour A (2018) Numerical investigation of the pseudo-potential lattice Boltzmann modeling of liquid–vapor for multi-phase flows. Physica A: Statistical Mechanics and its Applications 489: 65-77. Link: https://bit.ly/3wNPqzY
Jourabian M, Darzi AAR, Toghraie D, Ali Akbari O (2018) Melting process in porous media around two hot cylinders: Numerical study using the lattice Boltzmann method. Physica A: Statistical Mechanics and its Applications 509: 316-335. Link: https://bit.ly/3vKxmXh
Balootaki AA, Karimipour A, Toghraie D (2018) Nano scale lattice Boltzmann method to simulate the mixed convection heat transfer of air in a lid-driven cavity with an endothermic obstacle inside. Physica A: Statistical Mechanics and Its Applications 508: 681-701. Link: https://bit.ly/3g6oAMP
Mohammad AA (2011) Lattice Boltzmann Method: Fundamentals and Engineering Applications with Computer Codes. Springer. Link: https://bit.ly/3uCQeGx
Chen S, Doolen GD (1998) Lattice Boltzmann method for fluid flows. Annual Review of Fluid Mechanics 30: 329-364. Link: https://bit.ly/3iboMNA
Wolf-Gladrow A (2005) Lattice-Gas Cellular Automata and Lattice Boltzmann Models-An introduction, Springer. Link: https://bit.ly/3yVhFi5
Dazhi Y, Renwei ML, Luo LS, Wei S (2003) Viscous flow computations with the method of lattice Boltzmann equation. Progress in Aerospace Sciences 39: 329-367. Link: https://bit.ly/3caqefb
De AK, Dalal A (2006) Numerical simulation of unconfined flow past a triangular rod. International Journal for Numerical Methods in Fluids 52: 801-821. Link: https://bit.ly/3uKnzPL
Gera B, Sharma PK, Singh RK (2010) CFD analysis of 2D unsteady flow around a square rod. International Journal of Applied Engineering Research 1: 602-610. Link: https://bit.ly/3uFHmj9
Okajima (1982) Strouhal numbers of rectangular rods. Journal of Fluid Mechanics 123: 379-398. Link: https://bit.ly/3wUyOXt
Norberg C (1993) Flow around rectangular rods: Pressure forces and wake frequencies. Journal of Wind Engineering and Industrial Aerodynamics 49: 187-196. Link: https://bit.ly/3uKo1NX
Davis RWM, Moore EF (1982) A numerical study of vortex shedding from rectangles. Journal of Fluid Mechanics 116: 475-506. Link: https://bit.ly/3fJMwXs
Robichuax J, Balachandar S, Vanka SP (1999) Three-dimensional floquet instability of the wake of a square rod. Physics of Fluids 11: 560-578. Link: https://bit.ly/3wPL7UJ
Dutta S, Oanigrahi PK, Muralidhar K (2008) Effect of orientation on the wake of a square rod at low Reynolds numbers. Journal of Engineering Mechanics 134: 447-459.