Results 11 to 20 of about 3,774 (202)
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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Climate Impact Mitigation Potential of Novel Aircraft Features
Aerospace, 2022 This work presents a transpacific airliner designed for minimal climate impact, incorporating several novel design features. These include open rotor engines, sustainable aviation fuels, natural laminar flow airfoils, and riblets.
Nils M. Barner +4 more
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Microshape Control, Riblets, and Drag Minimization [PDF]
SIAM Journal on Applied Mathematics, 2013 Relying on the rugosity effect, we analyse the drag minimization problem in relation to the microstructure of the surface of a given obstacle. We construct a mathematical framework for the optimization problem, prove the existence of an optimal solution by $\Gamma$-convergence arguments, and analyze the stability of the drag with respect to the ...
Bucur, Dorin, Bonnivard, Matthieu
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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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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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Drag reduction within radial turbine rotor passages using riblets [PDF]
, 2018 In this paper, reducing the friction losses in a radial inflow turbine rotor surface by adding engineered features (riblets) is explored. Initially, computational fluid dynamics analysis was used to study the operating mechanism of riblets and to test ...
Khader, M. A., Sayma, A. I.
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Shark-Skin-Inspired Micro-Riblets Forming Mechanism of TC17 Titanium Alloy With Belt Grinding
IEEE Access, 2019 Belt grinding could improve the surface integrity of titanium alloys, but it is difficult to achieve breakthroughs in the grinding mechanism due to the lack of grinding mechanism of titanium alloy microriblets structure.
Guijian Xiao, Y. He, Y. Huang, Q. Li
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The Replication of Micro-Riblets on Ship Hulls for Drag Reduction Applications
International Journal of Technology, 2015 Desired higher ship speeds can be achieved using many performance enhancement techniques. One of the techniques is drag reduction of ships’ hulls by imbuing their surfaces with hydrophobic properties This paper presents an alternative method of ...
Sugeng Supriadi +3 more
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