|
|
Ultrasonic Anemometer
Křepelka, Pavel ; Fialka, Jiří (referee) ; Beneš, Petr (advisor)
In the first section of this document, there are described principles of the wind measuring. Anemometers can be divides by physical principles to mechanical (propeller or cup), ultrasonic anemometers and thermoanemometers. This paper is focused to ultrasonic anemometers. In the next part, there are described principles of sound propagation in the atmosphere. There are studies of measurement theory and comparing of different approaches. Completed solutions are presented in patent exploration. Afterwards, there are introduction of market research. Important parameters of ultrasonic anemometers are highlighted. Main aim of work is designing prototype of ultrasonic anemometer. Software, hardware and construct of experimental anemometer were designed. Created anemometer was calibrated in aerodynamics tunnel and results were compared with simulation output.
|
|
| |
|
|
Wind data analysis
Hanslian, David ; Kalvová, Jaroslava (advisor) ; Huth, Radan (referee) ; Květoň, Vít (referee)
The doctoral thesis presents various methods of wind data analysis. Its first part summarizes the undesirable factors that influence the measured wind data. In particular, the effects of anemometer placement with regard to the near-by obstacles are investigated. In addition to the theoretical review, the practical examples of analysis of these effects at the wind mast measurements are demonstrated. The second part is focused on the measure-correlate-predict methods. Two original matrix-type methods are presented. Furthermore, a comparison of accuracy of measure-correlate-predict methods for various types of reference data series, various methods and various configurations of applied methods has been performed. The reanalyzed wind proved to be a suitable source of reference data in most cases. The applicability of surface wind data from meteorological stations depends on the combination of reference and target series, as well as on the homogeneity of involved data. The newly introduced methods proved to be suitable and universal tool for measure-correlate-predict application. The final part of the thesis analyses the wind conditions over the Czech Republic. Besides to the overview of the knowledge of the Czech wind climate, the calculation of the wind map of the Czech Republic is described. The final map was...
|
|
| |
|
|
Ultrasonic Anemometer
Křepelka, Pavel ; Fialka, Jiří (referee) ; Beneš, Petr (advisor)
In the first section of this document, there are described principles of the wind measuring. Anemometers can be divides by physical principles to mechanical (propeller or cup), ultrasonic anemometers and thermoanemometers. This paper is focused to ultrasonic anemometers. In the next part, there are described principles of sound propagation in the atmosphere. There are studies of measurement theory and comparing of different approaches. Completed solutions are presented in patent exploration. Afterwards, there are introduction of market research. Important parameters of ultrasonic anemometers are highlighted. Main aim of work is designing prototype of ultrasonic anemometer. Software, hardware and construct of experimental anemometer were designed. Created anemometer was calibrated in aerodynamics tunnel and results were compared with simulation output.
|
guest ::
