Title :
Measurements, visualization and interpretation of 3-D flows application within base flows
Author :
Berner, C. ; Wey, P.
Author_Institution :
French-German Res. Inst., Saint-Louis, France
Abstract :
Experimental investigations of the flow field in the near-wake of axisymmetric afterbodies at an angle of attack of 5 degrees are reported. Models consists of a cylindrical afterbody and a conical boat tail. Measurements were performed by means of a 3-D frequency-shifted laser Doppler velocimeter at a free stream Mach number of 0.5. The tremendous increase of quantitative information obtained with this diagnostic technique raises the problem of reducing and displaying the data in a way that avoids large amounts of numbers and curves that are not easy to interpret. An attempt is made to visualize and to describe velocity characteristics in the form of a 3-D graphic representation.<>
Keywords :
Doppler effect; flow visualisation; laser velocimetry; 3-D flows; 3-D frequency-shifted laser Doppler velocimeter; 3-D graphic representation; Mach number; axisymmetric afterbodies; conical boat tail; cylindrical afterbody; flow field; flow visualisation; near-wake; velocity characteristics; Data visualization; Displays; Fluid flow measurement; Graphics; Laser modes; Laser velocimetry; Numerical models; Performance evaluation; Testing; Topology;
Journal_Title :
Aerospace and Electronic Systems Magazine, IEEE
