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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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CFD-Based Lift and Drag Estimations of a Novel Flight-Style AUV with Bow-Wings: Insights from Drag Polar Curves and Thrust Estimations
To achieve hydrodynamic design excellence in Autonomous Underwater Vehicles (AUVs) largely depends on the accurate prediction of lift and drag...
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Drag coefficient on particle agglomerates: a CFD study with experimental validation
The formation of irregularly shaped particle agglomerates is a recurring phenomenon observed in equipment with particle-laden flows, which directly...
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Drag on a plate perpendicular to the flow of an elasto-viscoplastic fluid
The flow with no inertia of an elasto-viscoplastic fluid around a plate perpendicular to the flow direction was considered. Firstly, experiments were...
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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 reducing nose fairings for existing freight train locomotives
At cruising speed, one of the most significant contributing factors to train fuel consumption is aerodynamic drag, and the leading locomotive...
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Steady Bi-dimensional Crossflow Plasma Jets in Turbulent Channel Flows
In this study, the possibility of reducing the friction drag exerted by turbulent flows by means of wall-mounted plasma actuators is experimentally...
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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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Drag Assessment for Boundary Layer Control Schemes with Mass Injection
The present study considers uniform blowing in turbulent boundary layers as active flow control scheme for drag reduction on airfoils. The focus lies...
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Aerodynamic drag of axisymmetric models with different boattail angles under subsonic and supersonic flow conditions
This study examines the drag trend and flow behavior of axisymmetric models with conical boattails under subsonic and supersonic conditions by using...
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Research on active flow control to reduce aerodynamic drag of mira notchback model
The lattice Boltzmann method, combined with the boundary layer model and the very large eddy simulation method, was used to simulate the MIRA...
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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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A volume of fluid simulation of the steady deformation and the drag of a single droplet in a flowing gas
A method is proposed to investigate the steady deformation and the drag of a single droplet in a flowing gas at a high Reynolds number. The volume of...
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Towards adaptive drag reduction of a flat-back 3D bluff body in variable pitch and crosswind by flow orientation at the base separation
The sensitivity of the drag to the rear design of a flat-back body is investigated under different body attitudes defined by the pitch (
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A methodology for data-driven modeling and prediction of the drag losses of wet clutches
In wet clutches, load-independent drag losses occur in the disengaged state and under differential speed due to fluid shearing. The drag torque of...
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Accelerometers and Drag-Free Control
The purpose of an accelerometer is to measure non-gravitational specific forces, whereas a drag-free system aims at reducing non-gravitational forces...
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Air Lubrication on a Flat Plate in a Steady Water Stream
Air injection underneath the surface of objects immersed in water is known to effect drag reduction benefits (Ceccio in Annu Rev Fluid Mech...
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Free fall drag estimation of small-scale multirotor unmanned aircraft systems using computational fluid dynamics and wind tunnel experiments
New European Union (EU) regulations for UAS operations require an operational risk analysis, which includes an estimation of the potential danger of...
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The drag characteristics prediction of multi-plate frictional wet clutches in vehicle transmissions
The multi-plate frictional wet clutch is one of the most important components in automatic transmissions. With the increasing of the rotational...
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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...
