An Investigation of Turbulent Taylor-Couette Flow Using Laser Doppler Velocimetry in a Refractive Index Matched Facility
Date of Award
Master of Science
Mechanical and Aerospace Engineering
Mechanical and Aeronautical Engineering
Dr. Parviz Merati
Dr. Jerry Hamelink
Dr. Chris Cho
Dr. Iskender Sahin
Masters Thesis-Open Access
Turbulent Taylor-Couette flow between an annulus formed by two concentric cylinders with dead end walls is comprised of complex patterns of vortices. An experimental apparatus was designed to provide refractive index matching between the annulus and working fluid. Optical access was maintained through three sides of the annulus and one end wall. An aqueous solution of sodium iodide was formulated to match the refractive index of the Plexiglas annulus. Laser Doppler Velocimetry was used to measure the three components of velocity and turbulence intensity throughout a planar section in the annulus. The annulus dimensions were: ƞ= 0.672, d = 15.08 mm, and Г= 20 and 4. The flow parameters were: Ω= 1200 RPM, T = 2.107 x 109 , T/Tc = 924,600, and Re = 73,440. In the 20d/L annulus, 20 Taylor vortices were observed while 2 vortices were formed in the 4d/L annulus. Plots of radial-axial component velocity vectors and contour plots of component velocities and turbulence intensities reveal the Taylor vortex flow structure.
Parker, Joseph C., "An Investigation of Turbulent Taylor-Couette Flow Using Laser Doppler Velocimetry in a Refractive Index Matched Facility" (1995). Masters Theses. 4858.