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Increase of Charging Efficiency of 140kW CNG Engine
Hadrava, Martin ; Vančura, Jan (referee) ; Svída, David (advisor)
The master’s thesis is focused on flow analysis work filling in turbocharged CNG engine. The research method is reverse engineering. The intake canal is casted and than scanned by 3D Scanner ATOS. The CAD model is created in program Creo Parametric 2.0. In the created interactive model is simulated flow in the CFD program Star CCM +. The air intake system is modified for increasing the charging efficiency of the engine.
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Aerodynamic interaction of autonomous vehicles
Opátová, Alexandra ; Čavoj, Ondřej (referee) ; Vančura, Jan (advisor)
This thesis deals with CFD simulation of platooning vehicles and their aerodynamic characteristics, created in Star CCM+ software. The main focus is on their aerodynamic drag dependency on different spacing between vehicles which allowed to evaluate the most energy efficient distance for platoon of vehicles. Furthermore, the procedure how to calculate the fuel consumption is described for set of variables.
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Numerical study of classroom ventilation and its effect on the spread of harmful substances
Klusáček, Ondřej ; Prinz, František (referee) ; Elcner, Jakub (advisor)
The thesis deals with the numerical simulation of the effect of ventilation on the spread of pollutants in a classroom using the STAR-CCM+ program. The aim of the thesis was to create a realistic 3D model of the classroom, to select a suitable multiphase flow model, to evaluate the spread of pollutants under different forms of operation and to select the most efficient ventilation method. Using a Lagrangian multiphase flow model, the pollutant volume fraction was compared for each type of operation. The numerical solution was validated by means of an experiment carried out in identical rooms and under the same ventilation conditions. The resulting temperature and velocity fields in the classroom are also presented in the paper. Mechanical ventilation was found to be the most effective of the chosen methods. If the infected individual sits closer to the windows or doors, there is a lower risk of infection in the room
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Aerodynamic interaction of autonomous vehicles
Opátová, Alexandra ; Čavoj, Ondřej (referee) ; Vančura, Jan (advisor)
This thesis deals with CFD simulation of platooning vehicles and their aerodynamic characteristics, created in Star CCM+ software. The main focus is on their aerodynamic drag dependency on different spacing between vehicles which allowed to evaluate the most energy efficient distance for platoon of vehicles. Furthermore, the procedure how to calculate the fuel consumption is described for set of variables.
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|
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Increase of Charging Efficiency of 140kW CNG Engine
Hadrava, Martin ; Vančura, Jan (referee) ; Svída, David (advisor)
The master’s thesis is focused on flow analysis work filling in turbocharged CNG engine. The research method is reverse engineering. The intake canal is casted and than scanned by 3D Scanner ATOS. The CAD model is created in program Creo Parametric 2.0. In the created interactive model is simulated flow in the CFD program Star CCM +. The air intake system is modified for increasing the charging efficiency of the engine.
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