Examination of the 3D model of Satelite antenna dish- fluid flow air analysis

Abstract

The paper made a 3D model of a satellite antenna dish, and then the test is conducted technical functionality of the system. Assembly of satellite antenna dish, a 3D CAD model which is derived reverse engineering was studied in the framework of the exercise of their functions. Taking into account the function technical assembly which is directly related to the transmission of waves, it was deemed necessary to analyze fluid flow of air around the antenna. In this type of circuit is very important that the effect of air currents can carry out its function. The simulation model is based on a factor of the airflow according to the data that are valid for the area in which the device is used. To be the analysis of fluid flow, it is necessary to define the climatic conditions in which a technical system has to perform its function. According to the Bureau of Hydrometeorology Serbia "is one of the characteristics of the climate of Belgrade is southeast wind, Koshava, whose strength is 25-43 km / h, and its hit single can be up to 130 km / h. due specification of winds and air currents”. The Koshava is one of the strong or very strong winds with hurricane gusts. Satellite antenna dish in this study was designed in a software tool SolidWorks2011. and passed through a simulation tool flow SolidFlow. The results of the simulation were later compared with the results of tests of the real model satellite antenna dish that is made in Air-Technical Institute in Belgrade. Due to the volume of work in this study contains a few iterations, which were tested on real model and simulation is performed only in some specific parameters. For the same reasons, comparison of the results obtained are not displaced persons located within this work. For certain angles of azimuth and elevation an analysis of fluid flow in a computer tool SolidFlow. This view has streamlines that impressive and give accurate values when testing the real models are in tabular and graphical displays a large scale. According to the chart, the color that the user specifies for its aesthetic necessary data on the examined technical system. Graphical display of fluid flow dish and anaglyph 3D display in the work. It is shown that the method of the test flow in virtual reality is very effective, and not too demanding. Equipment used in the real experiment is cumbersome, requires a serious level of preparation of the experiment and the final result set. Testing the system in SolidFlow software package requires only certain skills that must be mastered to the designer who makes the development of technical systems. Of course, a prerequisite for getting quality and correct results of testing the proper formation of the 3D model.