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Dynamika odtržení mezní vrstvy
Uruba, Václav ; Knob, Martin ; Popelka, Lukáš
Dynamics of separation process of a turbulent boundary layer subjected to adverse pressure gradient is studied experimetally. The Time Resolved PIV method is used to acquire spatiotemporal data. The flow-field in the vicinity of the separation zone is found to be extremely complex.
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Application of TR-PIV Method to Turbulent Flow-Field Studies
Uruba, Václav ; Knob, Martin
The paper deals with conditions of correct application of the Time Resolved – Particle Image Velocimetry (TR-PIV) method to study a turbulent flow-field. The method is able to catch both spatial and temporal correlation of the velocity field simultaneously, However the method resolution is limited. Influence of those limitations on evaluated results is shown. The TR-PIV hardware fy DANTEC is taken into account.
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O stopě turbulence a tišině
Jonáš, Pavel
The purpose of the contribution is to collect information on the generation, propagation and coalescence of turbulent spots and calmed regions in a transitional boundary layer. The appreciation of the behaviour of both turbulent spot and calmed region under turbulent free stream is the focus of this study.
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