Affiliation:
1. Fluid Mechanics Group, University of Oviedo, Campus de Viesques, Gijón, 33271 Asturias, Spain
Abstract
This paper analyzes the operative characteristics of a three-hole cobra type probe especially designed to attain an angular range higher than 180deg for planar turbulent flows. A new calibration and data reduction method are also introduced, discriminating three different zones inside the angular range of the calibration. This methodology improves the probe performance, extending its operative angular range from the typical ±30degto±105deg. In addition, the transmission of the uncertainty—from the pressure measurements to the flow variables—is estimated, showing reasonably low levels for the whole angular range. Furthermore, the sensibility of the probe calibration to the Reynolds number and the pitch angle is considered, and the influence of the turbulence level is outlined. Regarding these factors, the probe precision in the extended angular range is found to be similar to that of the traditional range. Finally, the probe is tested in a flow field with large variations of the incidence angle, and the results obtained with the new method are compared to those given by the traditional calibration.
Reference16 articles.
1. Dudziniski, T. J., and Krause, L. N., 1969, “Flow-Direction Measurement With Fixed-Position Probes,” NASA TM X-1904.
2. Direct Calibration Framework of Triple-Hole Pressure Probes for Incompressible Flow;Argüelles Díaz;Meas. Sci. Technol.
3. Measurement of Flow Speed and Flow Direction by Aerodynamic Probes and Vanes;Wuest;AGARD Conf. Proc.
4. Reynolds Stress, Mean Velocity, and Dynamic and Static Pressure Measurement by a Four-Hole Pressure Probe;Hooper;Exp. Therm. Fluid Sci.
5. Instantaneous Velocity and Pressure Measurements in Turbulent Mixing Layers;Guo;Exp. Therm. Fluid Sci.
Cited by
10 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献