Paper Title:
Research of Measurement Method of Two Dimensional Configuration Drag Test in Wind Tunnel in Case of High Lift
  Abstract

Computational fluid dynamics and wind tunnel test are two main technical means to examine the aerodynamic performance of airfoil and two-dimensional(2-D) configuration. Two dimensional wind tunnel tests use commonly wake flow field measurement to integrate for drag of airfoil or two-dimensional configuration, but the integral formulas are based on certain assumptions and of certain bounds of application. In this paper, based on Navier-Stokes equations numerical simulation and two dimensional wind tunnel testing, the drag measuring technique for high lift configuration in low speed wind tunnel is researched. Navier-Stokes equations is solved for the flow around a multi-element airfoil, the wake flow characteristics behind the multi-element airfoil and the assumptions for conventional drag measuring method are analyzed, then a new more precise drag formula for two dimensional wind tunnel test is put forward; Based on the simulation results of multi-element airfoil flow, it’s aerodynamic performance is obtained respectively by integrating the surface pressure and friction drag, and computing with the information of wake flow according to conventional and newly proposed drag calculation formulas, and the three results are compared to verify the accuracy of the new drag formula; The wind tunnel test is carried out to ascertain the accuracy of the new drag formula. It is shown from the results that in the high-lift case the conventional drag formula with the wake information is of many limitations and must be improved, and the new drag formula presented in this paper is more accurate because of consideration of the wake flow characteristics of airfoil or two-dimensional configuration.

  Info
Periodical
Advanced Materials Research (Volumes 301-303)
Chapter
Chapter 2: Measuring and Testing Techniques
Edited by
Riza Esa and Yanwen Wu
Pages
671-676
DOI
10.4028/www.scientific.net/AMR.301-303.671
Citation
Y. Q. Jiao, X. P. Chen, Z. L. Zhi, "Research of Measurement Method of Two Dimensional Configuration Drag Test in Wind Tunnel in Case of High Lift", Advanced Materials Research, Vols. 301-303, pp. 671-676, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Pei Qing Liu, Yan Xiang Cui, Liang Wang, Qiu Lin Qu
Chapter 1: Applied Mechanics Mechanical Engineering
Abstract:Based on the characteristics of blowing control, a new technique was put forward to weaken slat cove separation and reduce noise. The effect...
223
Authors: Qing Yuan Chen, Feng Lin Guo, Jin Quan Xu
Chapter 3: Power Machinery and Engineering
Abstract:In this study, a coupled methodology is proposed for the aerodynamic behavior of wind turbine airfoils. The idea is to combine a...
572
Authors: Shang Ke Yuan, Ren Nian Li
Chapter 7: Industrial Equipment and Engineering
Abstract:The airfoil NACA 4412 commonly employed in wind turbines is modified by attaching a Gurney flap with length of 2% chord at its trailing edge...
900
Authors: Jing Mei Yu, Yan Hong Yu, Pan Pan Liu
Chapter 1:Industrial Mechanical Engineering and Mining Machinery
Abstract:wind power is the most effective form of wind energy utilization, modern large-scale wind turbine with horizontal axis wind mainly....
111
Authors: Xin Zi Tang, Xu Zhang, Rui Tao Peng, Xiong Wei Liu
Chapter 1: Energy Science and Saving Technology
Abstract:High lift and low drag are desirable for wind turbine blade airfoils. The performance of a high lift airfoil at high Reynolds number (Re) for...
125