Zaloamati

A methodology to analyze the behavior of the flow around an architectural construction in a wind tunnel is presented as a fundamental tool in order to control the operational conditions. The initial work was the characterization of the wind tunnel to scale the physical models and was defined as 1:50. The material used in the construction of the scaled models is translucent acrylic of 0.003 meters thick. Materials selection was based on the optical properties of the selected material that facilitates the visualization of the air flow in the test area of the wind tunnel. All models was positioned on a base built in acrylic. The assembly was placed on a glass with a 0.005 meters of thickness; the structure has adjusted to the width of the tunnel to avoid the influence of the internal walls, to construct a plane to facilitate the visualization and moreover the interpretation of the results. The selection of the light source is one of the innovations presented on this thesis. Basically, the plane of light is near 0.0005 meters thick, that defines a region around the control volume in order to study only one plane. The three dimensional nature of the flow around a geometry phenomenon is complex. However, it is possible to study by using the proposed experimental technique and a high speed camera at different operational conditions. One of the objectives in this work is to ensure the reproducibility of the test base on the geometric, kinematic and dynamic similarity criteria. It is possible to consider the as non-intrusive technique; moreover it is possible to study the qualitative nature of the fluid around a building, to propose several bioclimatic designs of architectural geometries and to evaluate the cases within the wind tunnel. The interpretation of the results highlights the advantages of the method over the conventional visualization techniques. It is also consider as a tool that can be used in scaled models.

Zaloamati

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