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Turbulentní charakteristika uvnitř městské křižovatky
 Kellnerová, Radka ; Jaňour, Zbyněk
The wind-tunnel experiment checked the central symmetry for the inlet conditions and the flow inside an one case of symmetric model. For approaching flow, central asymmetry of y- and z-component of velocity between the right and left side of tube was detected. Nonetheless, the model of urban intersection has a dominant role in flow up to the 1.5 height of building and just mild asymmetry was found here. For elimination of these discrepancies the influence of wind direction and model arrangement suppressing the lateral flow was tested. The main reason for asymmetry was appeared to be a position of the mounted probe of LDA measuring facility. The turbulent characteristics obtained inside the model were analysed using Quadrant analysis technique. This helped to understand the structure of momentum flux in lower surface layer called the roughness sublayer.
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