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Experimental study of turbulence downstream of a wire mesh
Uřičář, Filip ; Pech, Ondřej (referee) ; Lízal, František (advisor)
This bachelor's thesis is focused on the convection behind a mesh grid and consists of three parts. The first part presents current of knowledge in the generation and damping of the turbulence by the mesh grid. The second part presents experimental results of the measurement. The third part of the thesis is focused on experimental data processing and analysis. The method of hot wire anemometry was chosen for the speed measurement, namely Streamline by Dantec and for experimental purposes track had been constructed in the Laboratory of Ventilation Systems at the Faculty of Mechanical Engineering, Brno University of Technology. Based on the knowledge gained from the study of literature and the consultations, calculations and technical possibilities of the instruments used, grid measurements were performed for convection from 150 to 300 liters per minute, which was sufficient to generate turbulent flow. For the experiment, a solid grid through which the fluid flows has been chosen, due to feasibility of the experiment.
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Water consumption in selected subjects
Jedličková, Tereza ; Sucháček, Tomáš (referee) ; Kučera, Tomáš (advisor)
The aim of the theoretical part of the bachelor thesis is to define the basic concepts related to the need and consumption of water. The following terms are explained: average daily water demand, maximum daily and maximum hourly water demand. The thesis also deals with water flow measurement. Among other things several types of flow meters are described here. In the practical part of the bachelor thesis, water consumption and water prices are analyzed in three selected agricultural cooperatives. There are compared individual agricultural cooperatives. Part of the thesis is also the determination of the average value of water consumption per cow.
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Measurement of Noise During Rainwater Flow Through the Roof Drain Body
Fučík, David ; Ručka, Jan
The article deals with the issue of measuring the flow and noise that arises in the vicinity of the siphonic drainage system during the outflow of rainwater from the roof surface. Rainwater is drained from the roof level through roof drains, which are fitted into vertical penetrations in the roof structure. The article describes the basic issues of flow and noise measurement, which refers to technical standards and other literature. According to the given requirements, the parameters of several siphonic roof drains from various manufacturers will be measured. Subsequently, the measured data will be compared and evaluated.
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Water consumption in selected subjects
Jedličková, Tereza ; Sucháček, Tomáš (referee) ; Kučera, Tomáš (advisor)
The aim of the theoretical part of the bachelor thesis is to define the basic concepts related to the need and consumption of water. The following terms are explained: average daily water demand, maximum daily and maximum hourly water demand. The thesis also deals with water flow measurement. Among other things several types of flow meters are described here. In the practical part of the bachelor thesis, water consumption and water prices are analyzed in three selected agricultural cooperatives. There are compared individual agricultural cooperatives. Part of the thesis is also the determination of the average value of water consumption per cow.
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Experimental study of turbulence downstream of a wire mesh
Uřičář, Filip ; Pech, Ondřej (referee) ; Lízal, František (advisor)
This bachelor's thesis is focused on the convection behind a mesh grid and consists of three parts. The first part presents current of knowledge in the generation and damping of the turbulence by the mesh grid. The second part presents experimental results of the measurement. The third part of the thesis is focused on experimental data processing and analysis. The method of hot wire anemometry was chosen for the speed measurement, namely Streamline by Dantec and for experimental purposes track had been constructed in the Laboratory of Ventilation Systems at the Faculty of Mechanical Engineering, Brno University of Technology. Based on the knowledge gained from the study of literature and the consultations, calculations and technical possibilities of the instruments used, grid measurements were performed for convection from 150 to 300 liters per minute, which was sufficient to generate turbulent flow. For the experiment, a solid grid through which the fluid flows has been chosen, due to feasibility of the experiment.
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