Results 1 to 10 of about 284,390 (182)
A drag model for the gas-solid vortex unit
Powder Technology, 2017 Abstract A drag model for the Gas-Solid Vortex Unit is presented. A large set of experimental data, obtained using static gauge pressure measurements, Particle Image Velocimetry and Digital Image Analysis in different GSVU geometries is used to estimate the model parameters with regression analysis.
Geraldine Heynderickx +2 more
exaly +3 more sources
Numerical Investigation on Drag Reduction Mechanisms of Biomimetic Microstructure Surfaces [PDF]
BiomimeticsBiomimetic microstructured surfaces offer a promising passive strategy for drag reduction in marine and aerospace applications. This study employs computational fluid dynamics (CFD) simulations to systematically investigate the drag reduction performance
Jiangpeng Liu +4 more
doaj +2 more sources
Scour process, flow dynamics, hydrodynamic forces, around a series of repelling spur dikes [PDF]
Scientific ReportsThis experimental study examined the turbulence effects around spur dikes on scour dynamics under clear-water conditions. An experiment was conducted in a straight rectangular flume of length, width, and flow depth: 15, 0.91, and 0.70 m, wherein ...
Sandeep Kumar +2 more
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Parametric sweep assessment of cross-slit cylinders for passive drag reduction and wake modification [PDF]
Scientific ReportsThis paper presents a detailed numerical investigation and parametric sweep assessment of cross-slit (CS) cylindrical configurations aimed at passive drag reduction and wake modification in low to transitional Reynolds number regimes relevant to marine ...
G. Madhan Kumar +2 more
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Three-dimensional large eddy simulation of hydrodynamics in multi-pier tandem bridge systems [PDF]
Scientific ReportsThe wake flow generated by tandem bridge piers significantly interferes with downstream flow fields, resulting in complex hydrodynamic interactions that impact structural safety and durability.
Weiqun Liang +4 more
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Numerical and Experimental Enhancement of the Aerodynamic Performance of a Road Vehicle using Passive Flow Control [PDF]
Journal of Applied Fluid Mechanics, 2023 This study focused on reducing the drag force of a road vehicle using passive flow control. The aerodynamic performance of the model vehicle was improved by applying originally designed vortex generators.
C. Bayindirli
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Numerical Study of Combined Drag Reduction Bases on Vortex Generators and Riblets for the Ahmed Body using IDDES Methodology [PDF]
Journal of Applied Fluid Mechanics, 2022 The flow fields around vehicle drag reduction devices are three-dimensional, complicated, and unsteady. Meanwhile, the small scale of the drag reduction device brings more challenges to the simulation. An Improved Delayed Detached Eddy Simulation (IDDES)
X. Yang, Y. Hu, Z. Gong, J. Jian, Z. Liu
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Nihon Kikai Gakkai ronbunshu, 2021 The effects of the configurations and structural parameters of the cylinder blade wind turbine driven by the steady lift force of the longitudinal vortex on its rotation and drag force characteristics were investigated.
Kasumi SAKAMOTO +2 more
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Effect of NACA0012 Airfoil Pitching Oscillation on Flow Past a Cylinder
Energies, 2021 The flow past a cylinder is a classical problem in flow physics. In a certain range of Reynolds number, there will be Karman vortex street phenomenon in the wake of a cylinder, which will greatly increase the pressure drag of the cylinder. By controlling
Rong Han +3 more
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AIP Advances, 2022 Incompressible viscous flow past an ellipsoid of different aspect ratios (ARs, the ratio of the vertical to the horizontal axis of the ellipsoid, is ranged from 0.5 to 2) at a Reynolds number of 300 is investigated numerically by a finite volume method ...
Junwei Li, Benmou Zhou
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