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Air recirculation balance of the vehicle's cooling package
Macejka, Kamil ; Čavoj, Ondřej (referee) ; Vančura, Jan (advisor)
The focus of this thesis is to create an effective tool for quick analyses of hot air recirculation at the cooling package, wich is a significant factor that influences its effectivity, to evaluate this influence and to propose viable solutions for its mitigation. The theoretical part of the thesis is devoted to the description of the problem, review of existing scientific studies and introducing the mechanisms responsible for the studied phenomenon. The practical part contains an analysis of flow and thermal effects, whose outputs are used for developing an computational model with a graphical user interface. This model is further used for comparison of effects of various input parameters and based on its results the measures targeted on reduction of recirculation are designed, which are then evaluated using CFD methods.
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Influence of vehicle radiator pressure drop on its aerodynamic drag
Pavlovič, Matúš ; Blaťák, Ondřej (referee) ; Vančura, Jan (advisor)
This diploma thesis focuses on numerical simulation of DrivAer vehicle model with different pressure losses of the radiator. CFD models of the vehicle in Estate body version for individual type of riadiator are created, together with a radiator and a simplified engine compartment. The aim of this work is to compare characteristics of conventional aluminium radiator with characteristics of polymeric prototype radiator and their impact on aerodynamic drag of the vehicle.
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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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Influence of vehicle radiator pressure drop on its aerodynamic drag
Pavlovič, Matúš ; Blaťák, Ondřej (referee) ; Vančura, Jan (advisor)
This diploma thesis focuses on numerical simulation of DrivAer vehicle model with different pressure losses of the radiator. CFD models of the vehicle in Estate body version for individual type of riadiator are created, together with a radiator and a simplified engine compartment. The aim of this work is to compare characteristics of conventional aluminium radiator with characteristics of polymeric prototype radiator and their impact on aerodynamic drag of the vehicle.
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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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