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Thermophysics and Aeromechanics

2012 year, number 3

Digital particle flow visualization methods as applied to characterization of turbulent boundary layer

A.V. Bilsky1, O.A. Gobyzov1, V.I. Kornilov2, D.M. Markovich3
1 Kutateladze Institute of Thermophysics SB RAS
2 Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
3 Kutateladze Institute of Thermophysics SB RAS; Novosibirsk State University
dmark@itp.nsc.ru
Keywords: optical methods, PIV, PTV, flow visualization, velocity field, pulsations, turbulent boundary layer, flat plate
Pages: 351-362

Abstract

In the present paper, we discuss various approaches to measurement of velocity fields and velocity fluctuations in incompressible turbulent boundary layer by digital particle flow visualization methods. In particular, performing measurements in the vicinity of streamlined surface is considered. A description of the optical measuring system and methods to seed the flow with tracer particles is presented. Measured data for flow velocity fields and turbulent velocity pulsations in boundary layer on a flat impermeable plate are analyzed. Comparative data illustrating the efficiency of various algorithms for treating PTV images are presented.