Národní úložiště šedé literatury Nalezeno 13 záznamů.  předchozí11 - 13  přejít na záznam: Hledání trvalo 0.00 vteřin. 
Dynamics of Coherent Structures Behind Vibrating Airfoil
Uruba, Václav
Flow around steady and vibrating airfoil with a positive angle of attack has been\nstudied experimentally, using a Time-Resolved PIV (“TR-PIV”) technique. For analysis of\ncomplex spatial dynamics of the flow the Oscillation Pattern Decomposition (OPD) method\nhas been used. The resulting flow dynamics is characterized by OPD modes of oscillating and\nnon-oscillating character, describing travelling and pulsating patterns in the flow. Topology\nand frequency of dynamic modes are shown in the presented paper.
Force interaction of an airfoil in fluid flow
Uruba, Václav
The physical mechanism of lift and drag forces exerted on an airfoil is studied using results from mathematical modelling. Special attention is paid to lift force origin. The mechanism based on 3D flow-structure as a result of 2D flow-field instability is described.
(An)Isotropy Analysis of Turbulence
Uruba, Václav
Basic ideas of (an)isotropy analysis and rating of turbulent flows are presented oriented on point velocity data analysis. Two types of anisotropy invariant maps are proposed. Practical example is shown.

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