Experimentální výzkum mezních vrstev metodou 2D PIV
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Date
2022-06-07
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Abstract
V úvodní části této práce je popis základních pojmů a mechanismů mechaniky tekutin, jmenovitě se jedná o viskozitu, Reynoldsovo číslo, laminární, turbulentní proudění a mezní vrstvy. Další kapitola se zabývá vysvětlením základního principu metody PIV a metodikou záznamu obrazu. Také je zde zmíněna problematika PIV měření v blízkosti stěn.V následující kapitole je popsán postup návrhu experimentu, také je zde bližší obeznámení s experimentálním uspořádáním a s použitou měřicí technikou. Poté je věnována pozornost popisu kalibrace vlastního měření. Dále je vysvětlena metodika vyhodnocení experimentálních dat. Je zde zahrnut i popis vyhodnocovacího programu.V závěru jsou shrnuty výsledky spolu s hodnocením provedeného experimentu.
In this thesis, a description of certain basic mechanisms of fluid mechanics can be found in the first chapter, namely viscosity, Reynolds number, laminar flow, turbulent flow and boundary layers. In the next chapter there is an explanation of the basic principle of the PIV method and the methodology of image recording. The issue of measurement in close proximity to walls is also mentioned here.In the following chapter you can find the procedure of experiment design, there is also a closer acquaintance with the measuring track along with the used devices and the basic principle of the camera used. Then attention is paid to calibration. Then, a method of evaluating the data obtained by the experiment is described. A description of the evaluation program is also included.In the closing part, the evaluation of the results can be found together with the evaluation of the performed experiment.
In this thesis, a description of certain basic mechanisms of fluid mechanics can be found in the first chapter, namely viscosity, Reynolds number, laminar flow, turbulent flow and boundary layers. In the next chapter there is an explanation of the basic principle of the PIV method and the methodology of image recording. The issue of measurement in close proximity to walls is also mentioned here.In the following chapter you can find the procedure of experiment design, there is also a closer acquaintance with the measuring track along with the used devices and the basic principle of the camera used. Then attention is paid to calibration. Then, a method of evaluating the data obtained by the experiment is described. A description of the evaluation program is also included.In the closing part, the evaluation of the results can be found together with the evaluation of the performed experiment.
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proudění, Particle Image Velocimetry, mezní vrstva, obtékání rovinné desky, flow, Particle Image Velocimetry, boundary layer, flowing around flat plate