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Thermophysics and Aeromechanics

2003 year, number 2

LDA – PIV diagnostics and 3D simulation of oscillating swirl flow in a closed cylindrical container

I.V. Naumov, V.L. Okulov, K.E. Meyer, J.N. Sorensen*, and W.Z. Shen*
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
*Technical University of Denmark, Department of Mechanical Engineering, Copenhagen, Denmark
Pages: 143-148


Investigation results on unsteady vortex breakdown obtained simultaneously using two diagnostics methods: a) determination of a velocity field by particle tracks (particle image velocimetry – PIV), b) determination of velocity field by Laser Doppler Anemometry (LDA), are presented. The experiments data are in some regimes supplemented by the 3D computations of the incompressible Navier – Stokes equations in cylindrical coordinates. Perfect agreements between calculation and experiment reveal efficiency of both suggested diagnostics method for pulsating vortex breakdown and numerical method for solution to 3D un-steady Navier – Stokes equations.