Drag Reduction through Attachment Line Control
Influence of Attachment Line Flow on Form Drag
... Figure 3.23: The blurred image of the side view of the probe support and wind tunnel model obtained from the dual magnification phase set-up shown in figure 3.19 However, near-wall alignment on the actual experimental ...
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Drag Reduction by Laminar Flow Control
... and attachment line instability can be controlled by passive means as shown in the LamAiR (Laminar Aircraft Research) project, the second part of this paper focusses on controlling 2D ...
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Turbulent drag reduction through oscillating discs
... other drag reduction ...feedback control systems studied by Yoshino et ...comparable drag-reduction values for even larger oscillation periods and diameters, which are denoted by the ...
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Turbulent drag reduction through wall-forcing methods
... of control on the different statistics and here more particularly the Reynolds-shear ...skin-friction drag-reduction coefficient through the FIK ...dominating control method behaviour. ...
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Transonic Drag Reduction Through Trailing-Edge Blowing on the FAST-MAC Circulation Control Model
... circulation control semispan model was completed in the National Transonic Facility at the NASA Langley Research Center where the model was configured for transonic testing of the cruise configuration with 0 ◦ ...
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Drag Reduction 103 Techniques for Increasing Europa Performance Through Drag Reduction By Bud Yerly Custom Flight Creations, Inc.
... Reinforce all your wheel pant attachment points and install bulkheads inside the pants for strength and support. Normally a metal washer floxed and glassed in is enough. Reinforce the wheel opening with extra ...
Drag reduction via turbulent boundary layer flow control
... skin-friction drag reduction through passive and active flow control is still at an early stage in its devel- ...body-force control strate- gies have been shown to give drag ...
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Toward Understanding Underlying Mechanisms of Drag Reduction in Turbulent Flow Control
... WORK Through direct numerical simulations in a channel flow (plane Poiseuille) geometry, the underlying drag-reduction mechanisms of three flow-control strategies, namely polymer additives, ...
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Noise Reduction Through Circulation Control
... The conventional wing had the same general shape as the CCW over most of the chord. However, its trailing edge was altered with a cut-out for a stowed flap. A single-slotted Fowler flap was attached. Two different flaps ...
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Quantitative comparison of 2D and 3D shock control bumps for drag reduction on transonic wings
... shock control bumps on an infinite unswept natural laminar flow wing are investigated by adopting an optimization enhanced parametric study ...explored through a series of design optimization and their ...
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Turbulent Drag Reduction by Spanwise Wall Oscillations
... a control scheme of drag ...walls through boundary conditions for the spanwise and streamwise (for the case of inclination cycle) velocity ...on drag reduction at a Reynolds number of ...
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Skin-Friction Drag Reduction in a Turbulent Channel Flow based on Wall Shear-Free Control
... and control surfaces) through the wall region, similar to previous studies for turbulent flows with ...shear-free control at the ...documented through quadrant analysis, instantaneous view of ...
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Review of Research on Vehicles Aerodynamic Drag Reduction Methods
... flow control with air jets A large contribution to the aerodynamic drag of a vehicle arises from the failure to fully recover pressure in the wake region, especially on square back ...achieved ...
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Turbulent skin friction drag reduction control by spanwise motion
... actively control turbulent boundary layer for the tur- bulent skin-friction drag reduction with Direct Numerical ...understand drag reduction mechanism in simple spanwise wall ...
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Effectiveness of active flow control for turbulent skin friction drag reduction
... opposition control method proposed by Choi et al ...suction control input were considered ...active control for skin friction drag ...substantial drag reduction was achieved for ...
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Reduction Of Drag Forces Of An Aircraft
... passing through air or another fluid encountering resistance had been known since the time of ...the drag forces by ...reduced drag effects and a retractable ...the reduction of drag ...
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Spatially distributed control for optimal drag reduction of the flow past a circular cylinder
... natural drag reduction at low Reynolds numbers, we performed complementary simulations at Re = 300 with a cylinder span of L = 4D, thus matching the wavelengths of modes A and ...a drag coefficient of ...
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Review on Aerodynamic Drag Reduction of Vehicles
... underbody drag reduction devices like undercover, under- fin, and side air dam on the actual shape of a sedan-type vehicle [53], among these underbody has the ability to reduce the aerodynamic drag ...
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Drag Reduction in Oil-water Flows
... phase, drag reduction of 80 % was found in single phase water flows and 52 % in oil-water ...flows. Drag reduction was found to increase with increasing water and oil velocities and then began ...
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Linear feedback control for form-drag reduction on bluff bodies with a blunt trailing edge
... Linear control theory offers a great array of optimization ...and control strategy used in this thesis offers rich opportunities for control in a practical, real-world ...
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