Numerical study of the effects of aspect ratio and Reynolds number on the flow over a rectangular cylinder with rounded corners

Ocean Engineering, Journal Year: 2024, Volume and Issue: 297, P. 117115 - 117115

Published: Feb. 16, 2024

Language: Английский

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Gap ratio effect on the nearstream behavior of a confined jet flow

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(2)

Published: Feb. 1, 2025

This work investigated the near stream behavior of a confined jet flow when passive rings were placed at nozzle exit plane different gap ratios (β). β is (da) between ring and inner wall, normalized by thickness (drc) ranged from 0.2≤da/drc≤1.0. The results show that shedding vortices behind depends strongly on β. suppression was complete partially β=0.2 0.6, respectively, but negligible β=1.0. vortex associated with deflection due to delayed separation. normal Reynolds stress Uu center 1.255m2s−2 3.083e−5m2s−2 increase in across small values enhanced momentum transfer fluid layers. sustained surface against an adverse pressure gradient generally suppressed spread. However, mean velocity spread only correlated because negative forcing shear layer coherent structure wake local. At 0.3 diameter downstream origin, became independent decay vortices.

Language: Английский

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Efficiency and accuracy of the immersed boundary method in offshore structures: Effects of patterns of cross-flow and in-line finite protrusions

Ocean Engineering, Journal Year: 2024, Volume and Issue: 313, P. 119404 - 119404

Published: Oct. 9, 2024

Language: Английский

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