Testing the airfoil for a step change of the ATEF from = -3.0 to +1.8 showed that the obtainable cl was 0.10 to 0.13 in the linear part of the lift curve. The steady state tests showed that deflecting the ATEF towards the pressure side (positive ) translated the lift curve to higher lift values and deflecting the ATEF towards the suction side (negative ) translated the lift curve to lower lift values. Steady state and dynamic tests were carried out with prescribed deflections of the ATEF. The airfoil was tested at Re = 1.66 × 106. The ATEF was 9% of the total chord, made of piezo electric actuators attached to the trailing edge of a non-deformable airfoil and actuated using an (electric) amplifier. Copyright © 2009 John Wiley & Sons, Ltd.ĪB - A wind tunnel test of the wind turbine airfoil Risø-B1-18 equipped with an Active Trailing Edge Flap (ATEF) was carried out. Testing the ability of the ATEF to cancel out the load variations for an airfoil in sinusoidal pitch motion of AOA = ☐.7 showed that it was possible to reduce the amplitude with around 80% from cl = 0.148 to cl = 0.032. Modeling the step response with an indicial function formulation showed that the time constant in the step change and in sinusoidal deflections in dimensionless terms was T0* = 0.6. N2 - A wind tunnel test of the wind turbine airfoil Risø-B1-18 equipped with an Active Trailing Edge Flap (ATEF) was carried out. T1 - Wind tunnel test on airfoil Riso-B1-18 with an Active Trailing Edge Flap Copyright © 2009 John Wiley & Sons, Ltd.Ībstract = "A wind tunnel test of the wind turbine airfoil Ris 2009 John Wiley & Sons, Ltd.", Publication Date: Research Org.: Solar Energy Research Inst., Golden, CO (United States) Sponsoring Org.: USDOE USDOE, Washington, DC (United States) OSTI Identifier: 5639513 Report Number(s): SERI-TP-257-4400 CONF-8405153-6 ON: DE91002198 DOE Contract Number: AC02-83CH10093 AC04-76DP03533 Resource Type: Conference Resource Relation: Conference: Horizontal-axis wind turbine technology conference, Cleveland, OH (United States), 8- Country of Publication: United States Language: English Subject: 17 WIND ENERGY 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE AIRFOILS TESTING AERODYNAMICS ASPECT RATIO COMPARATIVE EVALUATIONS COMPUTER CODES COMPUTER-AIDED DESIGN DRAG REYNOLDS NUMBER THICKNESS THREE-DIMENSIONAL CALCULATIONS WIND TUNNELS WIND TURBINES DESIGN DIMENSIONS FLUID MECHANICS MACHINERY MECHANICS TUNNELS TURBINES TURBOMACHINERY UNDERGROUND FACILITIES 170602* - Wind Energy Engineering- Turbine Design & Operation 990200 - Mathematics & = AOA.A wind tunnel test of the wind turbine airfoil Risø-B1-18 equipped with an Active Trailing Edge Flap (ATEF) was carried out. Texas A and M Univ., College Station, TX (USA).Rockwell International Corp., Golden, CO (USA).
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |