A metallic anti-biofouling surface with a hierarchical topography containing nanostructures on curved micro-riblets [PDF]
Microsystems & Nanoengineering, 2022 Metallic surface finishes have been used in the anti-biofouling, but it is very difficult to produce surfaces with hierarchically ordered structures. In the present study, anti-biofouling metallic surfaces with nanostructures superimposed on curved micro-
Taekyung Kim +4 more
doaj +2 more sources
CFD-driven neural network and SVM models for airfoil aerodynamic enhancement with bio-inspired riblets and plasma actuation [PDF]
Scientific ReportsEnhancing the airfoil performance using advanced flow control techniques is an important challenge in the aerospace and automotive industries. In this article a hybrid computational and artificial intelligence (AI) approach is developed for aerodynamic ...
Kailam Vijayakumar Karthikeyan +4 more
doaj +2 more sources
Additive Manufacturing of Organic Electrochemical Transistors: Methods, Device Architectures, and Emerging Applications [PDF]
Small, Volume 21, Issue 11, March 19, 2025.Organic electrochemical transistors (OECTs) are essential for bioelectronics, neuromorphics, and flexible electronics. This review examines additive manufacturing advances for OECTs, covering printing techniques, device architectures, and applications including biochemical sensing, neuromorphic, green bio‐electronics, self‐healable, and 4D electronics.
Roberto Granelli +2 more
wiley +2 more sources
Drag Reduction Performance of Triangular (V-groove) Riblets with Different Adjacent Height Ratios [PDF]
Journal of Applied Fluid Mechanics, 2023 Surface structure is used to interfere with the turbulent boundary layer in the groove drag reduction, which is important to the endurance and stability of high-speed and ultrahigh-speed aircraft.
Z. M. Liu +7 more
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Numerical Evaluation of Riblet Drag Reduction on a MALE UAV
Aerospace, 2022 Flow control methods for aerodynamic drag reduction have been a field of interest to aircraft designers, who seek to minimize fuel consumption and increase the aircraft’s aerodynamic performance.
Chris Bliamis +3 more
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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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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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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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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
openaire +2 more sources
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
doaj +1 more source