Boundary Layer Local Deformation: Active Flow Control
Hot-Film and Hot-Wire Anemometry for a Boundary Layer Active Flow Control Test
... Unsteady active flow control (AFC) has been used experimentally for many years to minimize “bluff-body” ...A boundary layer wind tunnel was constructed with a 1ft-x-3ft test section and ...
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Drag reduction via turbulent boundary layer flow control
... and active flow control is still at an early stage in its devel- ...body-force control strate- gies have been shown to give drag reductions in both nu- merical and experimental ...
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Active control of Boundary Layer Separation & Flow Distortion in Adverse Pressure Gradient Flows via Supersonic Microjets
... reverse flow. This reverse flow zone corresponds to the dark blue velocity contours ...this flow field, roughly indicated by the box in ...reverse flow, close to the ramp surface, is clearly ...
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Active control of a separated turbulent boundary layer in adverse pressure gradient
... Abstract Flow control allows to suppress boundary layers separation, which largely dete- riorates the performances of machineries which interact with uid (aircraft, cars, turbomachineries, ...on ...
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Streamwise Evolution of Turbulent Boundary Layer Response to Active Control Actuator
... Figure 1. Schematic of experimental set-up with picture of plasma-based ALSSA. III. Data Reduction The data reduction for the experiment started with converting the measured voltages from the hot wire probe into ...
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Transition Control in a Three-dimensional Boundary-layer Flow Using Plasma Actuators
... The e ffect of the forcing on the mean flow is shown in figure 5(a). Note that the decrease in the shape factor (H 12 = δ 1 /δ 2 , δ 2 - momentum loss thickness) and the maximum CF velocity starting at x ≈ 3.2 for ...
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Flow control over a circular cylinder using virtual moving surface boundary-layer control
... the flow field in the near wake of the circular cylinder was investigated using a time-resolved PIV system from ...the flow field around the plasma actuator and the near wake of the ...The flow field ...
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Power efficiency of the active boundary layer control around the hump by a slotted synthetic jet generator
... jet boundary layer control is an effective method that uses an unsteady blowing of the fluid flow into the boundary layer and its periodic suction from the close ...to ...
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On the core flow and turbulent boundary layer in a curved duct
... arbitrary control volume defining a fluid particle must move with the local fluid velocity, and its size must be small enough so th at the thermodynamic properties are invariant inside, but large enough to ...
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ACTIVE FLOW CONTROL TECHNOLOGY
... to active flow control that are not achievable by passive ...First, active flow control technology leverages and controls a natural stability of the flow to attain a large ...
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Enabling Micro Synthetic Jet Actuators in Boundary Layer Separation Control Using Flow Instability
... I d = ∫ 0 δ u ′ dy (2) Where I d is the intensity of disturbance, u’ is the fluctuating velocity defined in Eq. (1), y is normal-to-wall direction and δ is the local boundary layer thickness. Figure ...
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Numerical Analysis of Electromagnetic Control of the Boundary Layer Flow on a Ship Hull
... electromagnetic control of turbulent boundary layer on a ship hull is numerically ...of boundary layer on stern so that produce wall parallel Lorentz forces in streamwise direction as ...
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Plasma Actuator with Two Mesh Electrodes to Control the Flow Boundary Layer
... Numerous experimental studies carried out by the pioneers of aviation helped to gain the experience and skills necessary for the construc- tion of aircrafts. The structural solutions relat- ed to the airfoil can be ...
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Flow Modification over Rotor Blade with Boundary Layer Control Technique
... these flow is retarded and undergoes various types of losses which reduces performance therefore BL control is necessary to achieve desire ...BL control refers to the controlling behaviour of fluid ...
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Effects of Boundary Layer Flow Control Using Plasma Actuator Discharges
... B. Boundary Layer Pitot Probe The pitot probe used for the boundary layer traces was connected to the total pressure side of a pressure transducer using rubber ...the flow corresponding ...
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Boundary Layer Flow Control by an Array of Ramp-Shaped Vortex Generators
... the flow field is captured by the mean velocity distributions in Figures 8 to 11, for VG-u spacing (s/w) of 0, ...the flow visualization, the velocity defects are closer together for smaller spacing ...the ...
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Effects of Hybrid Flow Control on a Normal Shock Boundary-Layer Interaction
... hybrid flow control for controlling normal shock induced separated ...the flow control ...increased flow-turning angle, common in the design of integrated inlets, a bump was ...hybrid ...
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Local heat transfer on a finite width surface with laminar boundary layer flow
... laminar boundary layer, the conduction solution for analogous boundary conditions re- sults a good correlation for Nu over the whole surface of a finite width flat ...laminar flow regime using ...
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Experimental Investigation of Normal Shock Boundary-Layer Interaction with Hybrid Flow Control
... these flow features on one-half of the micro-ramp. Figure 1: Micro-ramp flow features schematic Past research efforts 4,5,6 have studied only micro-ramps as the flow control ...hybrid ...
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Data Link Layer. Flow Control. Flow Control
... n Frames have 1-bit sequence numbers (SN = 0 or 1) n Receiver sends an ACK (1-SN) if frame SN is correctly. received[r] ...
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