This paper deals with experimental measurement of pressures on the cube made in the wind tunnel of Aerospace Research and Test Establishment (VZLU) in Prague Letnany and calibrating the wind tunnel of Faculty of Civil Engineering in the Slovak University of Technology in Bratislava. The basis for the construction of the cube model in 1:30 scale was the cube in-situ with dimensions of 6 m in Great Britain in town called Silsoe. It describes the scope and application in practice.
This paper deals with the basic simulation of boundary layer in the wind tunnel in STU Bratislava and boundary layer given in the Slovak Technical Standard STN EN 1991-1-4 in Bratislava for category of terrain no. IV. The wind tunnel mainly allows experiments to determine the realistic reproduction of the static and dynamic response of a scale models of the buildings and structures immersed in a turbulent flow which simulates the natural wind in various categories of terrain. We have to deal with similarity criteria of modeling the objects, measuring the pressure and the velocity of flow in the tunnel by using the whole range of devices such as Pitot static probe, Constant Temperature Anemometry, Particle Image Velocimetry etc. all under the control in the program Labview developed by National Instruments .Than we are able to measure the pressure coefficients or any other parameters needed for design of buildings and structures of any shape and size, allowed by tunnel dimensions, placed on a different types of terrain roughness. The most recent research in new BLWT was calibration and simulation of boundary layer in the rear space of the tunnel.
This paper is concerned with wind influence on pedestrians in different buildings underpasses where with using of Computational Fluid Dynamic (CFD) is made study about proportion of buildings and underpasses affecting velocity and so pedestrian comfort in passage. For simulation of wind flow is used OpenFOAM software with k-epsilon model, which is in many papers represents as one of the best and most reasonable model for evaluation pedestrian comfort.
In this article are described the results from testing profile of atmospheric boundary layer in BLWT (Boundary layer wind tunnel) in Florence (Prato), Italy with emphasis on comparison of the results with simulations in CFD (Computational fluid dynamics) software OpenFoam. The values are compared with calculated values from EuroCode.
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