Numerical Analysis of Flow Past Over Square Rods Using Control Rod at Distinct Gap Spacing

Raheela Manzoor; Shazia Kasoom; Asma Naeem; Noreen Nadeem; Goher Aziz

Authors

Raheela Manzoor Mathematics Department, SBK Women’s University Quetta, 44000 Pakistan
Shazia Kasoom Mathematics Department, Air University, Islamabad.
Asma Naeem Mathematics Department, SBK Women’s University Quetta, 44000 Pakistan
Noreen Nadeem Mathematics Department, SBK Women’s University Quetta, 44000 Pakistan
Goher Aziz Mathematics Department, SBK Women’s University Quetta, 44000 Pakistan

Keywords:

Reynolds number, Control rods, Lattice Boltzmann method, Vortex Shedding, Energy Spectrum, Cdmean.

Abstract

The influence of Reynolds number and gap spacing on flow via two detachable square rods with a small control rod in between is examined using two-dimensional numerical simulations. The range of gap spacing is determined by taking Re = 80–200 and g = 0.50–6.0. First, the impact of the computational domain and the accuracy of the grid points are analyzed. Among these are crucial flow modes, fully formed two rows of vortex shedding flows, fully developed regular and irregular vortex shedding flows, consistent flow, and shear layer reattachment. For every combination of (Re, g), the Cdmean of the C1 rod is higher than the Cdmean of the C2 rod. Additionally, push causes Cdmean2 values to be negative between g = 0.50 and 2.0. The value of Cdmean that is larger is 1.3907 (Re, g) = (150, 3.0). Furthermore, for (Re, g) = (200, 3.0) and (200, 1.50), respectively, for C1 and C2, the greatest percentage decrease in Cdmean is 19.3% and 120.3%, respectively.

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