Měření a simulace vlivu vícefázového proudění na optický svazek v omezeném prostoru

Abstract

This diploma thesis deals with theory of optical beam in atmosphere, atmosphere effects on the FSO, theory of aerosol measuring in space, description of turbulent models and definition of aerosol measured for numerical model. The second part results from theoretical part when we find out the frequency of measured aerosols measuring particles by SMPS and OPS devices. We determine the influence of the measured aerosols and turbulent flow on the FSO using the detected optical power. This study has three major objectives: (1) to measure rate of aerosols that cause scattering of optical beam in the limited space, (2) to compare results with theoretical expectations for used wavelengths, (3) to create a numerical model that will aim to replace SMPS and OPS devices using ANSYS Fluent program to simulate the mass distribution of aerosols and their density in numerical model using suitable turbulence model.The final step is to compare the numerical model from ANSYS Fluent with the real measurement of frequency of aerosols.