New Numerical and Measurements Flow Analyses Near Radars

Applied Mechanics

Ruxandra Mihaela Botez¹  Guy Gauthier¹  Manuel Flores Salinas² 

[1] Department of Automated Production Engineering, École de Technologie Supérieure, Montreal, QC H3C1K3, Canada;LARCASE Laboratory of Applied Research in Active Control, Avionics and Aeroservoelasticity, École de Technologie Supérieure, Montreal, QC H3C1K3, Canada;

关键词: flow characteristics;    blunt body;    flow analysis;    turbulence reduction;    wind tunnel model;    CFD model verification and validation;   

DOI  :  10.3390/applmech2020019

来源: DOAJ

【 摘 要 】

An experimental and numerical investigation of the flow near a blunt body has been conducted in this study. Most experimental methods of flow studies use flow visualization and probes introduction into the flow field. The main goal of this research was the development of a new methodology to analyze flows, and to measure flow characteristics without taking into account the distorting effects of measuring probes. A series of experiments were performed on a ground surveillance radar in the Price-Païdoussis subsonic wind tunnel. Forces and moments were measured as functions of wind speeds and angular positions by the use of a six-component aerodynamic scale. A Computational Fluid Dynamics three-dimensional model was employed to analyze the wake region of the ground surveillance radar. A turbulence reduction system was proposed and analyzed in this research. The use of the proposed turbulence reduction system was found to be an effective way to reduce turbulent flow intensity by 50%, drag coefficients by 9.6%, and delay the flow transition point by 7.6 times.

【 授权许可】

Unknown