A two dimensional hybrid discrete vortex method is used to simulate flow over two unequal square cylinders in side-by-side arrangements at a Reynolds number Re-D = 550. The large cylinder face width is twice that of the small cylinder, giving a ratio of D/d = 2. The normalized transverse spacing of the cylinder centres varied between 0.875 less than or equal to T/D less than or equal to 8. Independent vortex streets are observed in the wake of the two unequal square cylinders at T/D = 8. Proximity interference commences at T/D = 4 with interactions between the two vortex streets. The interaction results in a synchronized vortex shedding at T/D 2.75. At T/D 1.25, the gap flow is predominantly biased towards the small cylinder, due to the shear layer interactions in the small cylinder wake. At T/D = 0.875, the gap flow is weak and vortices are shed from the outer sides of the two square cylinders, forming a single vortex street.
CITATION STYLE
Chiu, A. Y. W., & Ko, N. W. M. (2000). Simulation of Flow over Two Unequal Square Cylinders. In Science and Art Symposium 2000 (pp. 279–284). Springer Netherlands. https://doi.org/10.1007/978-94-011-4177-2_35
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