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Interfacial mechanism of hydrogel with controllable thickness for stable drag reduction
Surface wettability plays a significant role in reducing solid-liquid frictional resistance, especially the superhydrophilic/hydrophilic interface...
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Drag Reduction by Complex Mixtures in Turbulent Pipe Flows
The drag reduction of high molecular polymer solutions is well known as the Toms effect. The drag reduction can be divided into two types: Type A and...
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Platooning and Base Flaps for Drag Reduction of Trucks
Experimental investigations on generic truck models were carried out on the combined drag reducing effects of platooning and base flaps. A towing...
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Aerodynamic Drag Reduction of 3D Printed Bus Model and Substantiation Using Wind Tunnel
The improvement of fuel efficiency in intercity/interstate buses is very much essential to enhance the performance of the buses. Various add-on...
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A novel bionic Coleoptera pantograph deflector for aerodynamic drag reduction of a high-speed train
As an important source of train aerodynamic drag, the pantograph area is a key region which takes up about 10% contribution of the total. Thus,...
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CFD Analysis of Drag Reduction System (DRS) in Cars
The rear wing of a racing car plays a crucial role in generating down force, a key factor for achieving optimal turning speeds. High-speed vehicles,...
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Experimental investigation of yaw-angle effects on drag reduction rate for trapezoidal riblets
Effects of the yaw angle on the drag reduction rate of riblets were investigated experimentally for trapezoidal riblets with ridge angle of
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Drag reduction via polymer solute: 3D numerical simulations of pipe flow
The mechanism of drag reduction via polymer additives is long debated in the literature. This journal published a paper (Volokh in Acta Mech...
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Turbulent Drag Reduction by Travelling Waves of Spanwise Lorentz Force
Travelling waves induced by spanwise Lorentz force for skin-friction drag reduction are studied in the present work using direct numerical...
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Recent Advancements in Fluid Dynamics: Drag Reduction, Lift Generation, Computational Fluid Dynamics, Turbulence Modelling, and Multiphase Flow
By improving the understanding of fluid behaviour and allowing the development of cutting-edge technologies that enhance fluid-related processes in...
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Analysis of Wet Clutch Drag Torque and Optimization of Drag Torque Reduction Measures
The reduction of drag torque is an important issue in terms of improving transmission efficiency. When the wet clutch is in the disengaged state,...
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Drag reduction for flow past a square cylinder through corner chamfering
This study investigates the unsteady incompressible flow around a square cylinder with different chamfer ratios (CRs) using a commercial finite...
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Impact of Reynolds Number on the Drag Reduction Mechanism of Spanwise Travelling Surface Waves
The mechanism that provokes friction drag reduction in a turbulent boundary layer flow which is actively controlled by spanwise travelling...
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Drag reduction using longitudinal vortices on a flat-back Ahmed body
The paper presents different cavity wall designs at the rear of a flat-back Ahmed body to achieve drag reduction. The wake balance is assessed using...
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Drag Reduction in Turbulent Compressible Channel Flows Using Spanwise Velocity Waves
Numerical simulations in compressible turbulent channel flows are carried out by applying the active control technique of spanwise velocity waves...
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Eco-friendly polysaccharide coatings for antifouling and drag-reduction and potential application for marine devices
Traditional antifouling agents usually have a certain toxic effect on marine environments and non-target organisms. In this study, Dictyophora...
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Bionics-Inspired Structure Boosts Drag and Noise Reduction of Rotating Machinery
As a global concern, environmental protection and energy conservation have attracted significant attention. Due to the large carbon emission of...
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Hydrodynamic Analysis of Submarine Profiles for Drag Reduction
In the present investigation, the hydrodynamic analysis was performed to assess possible methods for minimising submarine drag. Drag Reduction (DR)...
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On the drag reduction mechanism of hypersonic turbulent boundary layers subject to heated wall blowing
Turbulence drag reduction is of great significance for the range increase of hypersonic flight vehicles. The proposed velocity-temperature coupling...
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Stepped aerospike for enhanced drag reduction using multiple intermediate shocks
Drag reduction using aerospikes has been explored extensively due to the consequences associated with the range, manoeuvrability, and structural...
