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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Riblet Drag Reduction Modeling and Simulation
Fluids, 2022 One of the most interesting passive drag reduction techniques is based on the use of riblets or streamwise grooved surfaces. Detailed flow features inside the grooves can be numerically detected only by Direct Numerical Simulations (DNS), still ...
Benedetto Mele
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Bio-inspired Surface Texture Fluid Drag Reduction using Large Eddy Simulation [PDF]
Journal of Applied Fluid Mechanics, 2023 Skin friction drag can be reduced through the application of bio-inspired riblet surfaces. Numerical simulations were performed using Large Eddy Simulation (LES) to investigate the effect of using riblets on reducing skin friction drag.
S. Hijazi, E. Tolouei
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Turbulent structure effects due to ordered surface roughness
Alexandria Engineering Journal, 2020 The effects of ordered surface feature in the form of converging-diverging riblets are investigated experimentally on an airfoil. Riblet sheets are applied onto the surface of NACA 0026 airfoil at a yaw angle of α=0°,±10°, Riblet height of h = 1 mm, and ...
Zambri Harun +3 more
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International Journal of Thermofluids, 2021 Turbulence and heat transfer are two critical factors in the chain of world energy consumption. Hence, development of more efficient energy transfer techniques in engineering applications through control and optimization of the thermal turbulent boundary
Shima Soleimani, Steven Eckels
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Modeling Surface Riblets Skin Friction Reduction Effect with the Use of Computational Fluid Dynamics
Chemical Engineering Transactions, 2020 Towards the minimization of fuel consumption and aicraft emissions reduction, many disruptive technologies have been proposed in aviation industry regarding the improvement of aircraft aerodynamic performance.
Chris Bliamis +3 more
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Study on Riblet Drag Reduction Considering the Effect of Sweep Angle
Energies, 2019 This study computationally evaluates the riblet drag reduction effect considering the effect of sweep angle. An implicit large eddy simulation is performed on a channel flow and an infinite swept wing.
Yufei Zhang, Yuhui Yin
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Numerical simulation of turbulent channel flow with particle-adhered riblet surfaces
Journal of Fluid Science and Technology, 2023 Numerical simulations of particle laden and fully developed turbulent channel flows with rectangular riblet were performed to investigate the influence of particle adhesion on the drag reduction effect.
Chikara SHIMIZU +2 more
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Efficient Direct Numerical Simulations of Straight and Sinusoidal Riblets in Turbulent Channel Flows [PDF]
, 2023 LAUREA MAGISTRALENella presente tesi viene presentato un codice di simulazione numerica diretta (DNS) a differenze finite progettato per valutare la riduzione della resistenza di attrito turbolento generata da riblets di forma arbitraria.
CIPELLI, STEFANO
core
Flow structures and wall parameters on rotating riblet disks and their effects on drag reduction
Alexandria Engineering Journal, 2022 The demand of energy saving and loss mitigation in modern industry gives rise to drag reduction techniques such as micro groove/riblet ever since the last century.
Tong Liang +3 more
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