Forced convection in joined rectangular grooves numerical simulation of PIV and LDA measurements

Author

Aroussi, A. ; Grant, I. ; Yan, Y.-Y.

Author_Institution

Dept. of Mech. Eng., Nottingham Univ., UK

fYear

1991

fDate

27-31 Oct 1991

Firstpage

94

Lastpage

102

Abstract

The authors investigated the fluid motion in L-shaped geometries using a laser Doppler anemometer (LDA), particle image velocimetry (PIV), and computational techniques, in order to reveal details on the structure and stability of the trapped eddy system. The aim was to simulate the flows measured with the LDA and PIV and to assess the accuracy of the mathematical models used. The nonintrusive optical measurements of the fluid motion in joined rectangular grooves were numerically predicted using two models of turbulence. The structure of the vortex system within the geometries was determined, and its dependence on the aspect ratios of the groove was established. The performance of the turbulence models in simulating these complex flows is assessed

Keywords

Doppler effect; anemometers; channel flow; convection; digital simulation; flow simulation; laser velocimeters; physics computing; turbulence; vortices; L-shaped geometries; LDA; PIV; fluid motion; joined rectangular grooves; laser Doppler anemometer; mathematical models; nonintrusive optical measurements; numerical simulation; particle image velocimetry; stability; trapped eddy system; turbulence; vortex; Computational geometry; Computational modeling; Fluid flow measurement; Geometrical optics; Laser modes; Laser stability; Linear discriminant analysis; Mathematical model; Motion measurement; Optical vortices;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation in Aerospace Simulation Facilities, 1991. ICIASF '91 Record., International Congress on

Conference_Location

Rockville, MD

Type

conf

DOI

10.1109/ICIASF.1991.186230

Filename

186230