HYDROGASDYNAMICS IN TECHNOLOGICAL PROCESSES

TALBOT INTERFEROMETRY IN MEASUREMENTS
OF THE PARAMETERS OF AN AXISYMMETRIC
TURBULENT JET

M. V. Doroshko,a O. G. Penyaz'kov,a 
G. Rankin,b K. L. Sevruk,a 
P. P. Khramtsov,a and I. A. Shikha 

UDC 532.517.4

The Talbot effect has been adapted to measurement of the 
parameters of mixing in an axisymmetric turbulent helium jet flowing 
out into a submerged air space. A two-dimensional array of angles 
of refraction of light has been determined from the displacement of 
the image of unit Talbot elements in the reproduction plane of the 
time-averaged talbogram. The distribution of the average refractive 
index of a medium and the concentration of helium in the flow field 
have been calculated by means of the Abel transformation. Based on 
an analysis of the intensity distribution at the maxima of the Talbot 
image, it has been shown that the turbulence of this jet is locally 
inhomogeneous and anisotropic.

aA. V. Luikov Heat and Mass 
Transfer Institute, National Academy of Sciences of Belarus, 15 P. 
Brovka Str., Minsk, 220072, Belarus; bFluid-Dynamics 
Research Institute, University of Windsor, Canada. Translated from 
Inzhenerno-Fizicheskii Zhurnal, Vol. 79, No. 5, pp. 94-99, September-October, 
2006. Original article submitted May 20, 2005.