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Sports car rear wing numerical optimization
Feldová, Petra ; Rudolf, Pavel (referee) ; Štefan, David (advisor)
This master’s thesis is focused on optimization of rear wing of sport car by using open-source software. The optimization of 2D profile of the rear wing is present in this thesis. Python environment was chosen for optimization and evolutionary algorithm was is used as optimization function. This algorithm is further connected to Xfoil software, which is computing aerodynamic characteristic. The ratio of the lift and drag coefficients (C_L/C_D) is chosen as parameter which considers the aerodynamic efficiency. The CFD computation of flowing around the whole car is provided in open-source software OpenFOAM. . The profile optimization results to approximately 7.9 % raise of the parameter C_L/C_D, in the same wing stability. The main benefit of this work is to use open-source software for the optimization and CFD analysis, which in future might save company’s resources by not buying expensive commercial software licenses.
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Software for Optimalization of Gear Speed
Pokorný, Pavel ; Beran, Martin (referee) ; Svída, David (advisor)
Rolling vehicle is being influenced both by driver and many other factors of physical nature. These factors affect the whole behavior of the car, its performance, fuel consumption etc. It is very reasonable to cope with these factors then. The main aim during vehicle evolution (both civil and racing ones) is to optimize the influence of all invisible enemies as much as possible. The aim of this work is a description of factors influencing the moving vehicle. Several practical examples are included. The theory of transmissions is fundamental to the programme for creating a saw-diagram and gear speed optimization. Finally a few analysis of the real vehicles and subsequent evaluation will be done. The output of the work is an overview of factors affecting the moving vehicle, the results of performed analysis and programme for optimization of gear speed.
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Overview of means for reducing induced drag
Mazánek, Adam ; Švec, Michal (referee) ; Daněk, Vladimír (advisor)
This bachelor thesis deals with the creation of overview of means for reducing induced drag on the wing of an airplane. It describes production of the induced drag and how it changes during a flight. The bachelor thesis also deals with geometrical modifications of the wing. The most extensive part is devoted to structural modifications of wing tips with special aiming on winglets.
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Aerodynamics of race car underbodies
Martínek, Tomáš ; Vančura, Jan (referee) ; Čavoj, Ondřej (advisor)
The aim of this bachelor thesis is clarifying principle of downforce, which is originating by ground effect. The thesis consists of theoretic description of this phenomen, explanations of ground effect on the racing circuit and presentation of several examples working with this effect.
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Car chassis diffuser
Kindl, Albert ; Balko, Marek (referee) ; Rudolf, Pavel (advisor)
Improving a car's aerodynamic properties can save fuel, increase range, or improve speed and handling. To achieve this, aerodynamic modifications and improvements are proposed to cars. The aim of this thesis is to describe a diffuser on an automotive chassis. The focus is mainly on the effect of its divergence angle on drag and lift. These dependencies are investigated on a simplified car model using CFD simulation in Ansys Fluent. The research section discusses the diffuser flow and losses, other important aerodynamic features and the importance of the diffuser in Formula 1 and passenger cars. The results of the thesis show the significant effect of the diffuser on the downforce and drag of the vehicle and indicate the important position of this element in the future of the automotive industry.
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Sports car rear wing numerical optimization
Feldová, Petra ; Rudolf, Pavel (referee) ; Štefan, David (advisor)
This master’s thesis is focused on optimization of rear wing of sport car by using open-source software. The optimization of 2D profile of the rear wing is present in this thesis. Python environment was chosen for optimization and evolutionary algorithm was is used as optimization function. This algorithm is further connected to Xfoil software, which is computing aerodynamic characteristic. The ratio of the lift and drag coefficients (C_L/C_D) is chosen as parameter which considers the aerodynamic efficiency. The CFD computation of flowing around the whole car is provided in open-source software OpenFOAM. . The profile optimization results to approximately 7.9 % raise of the parameter C_L/C_D, in the same wing stability. The main benefit of this work is to use open-source software for the optimization and CFD analysis, which in future might save company’s resources by not buying expensive commercial software licenses.
|
|
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Overview of means for reducing induced drag
Mazánek, Adam ; Švec, Michal (referee) ; Daněk, Vladimír (advisor)
This bachelor thesis deals with the creation of overview of means for reducing induced drag on the wing of an airplane. It describes production of the induced drag and how it changes during a flight. The bachelor thesis also deals with geometrical modifications of the wing. The most extensive part is devoted to structural modifications of wing tips with special aiming on winglets.
|
|
|
Aerodynamics of race car underbodies
Martínek, Tomáš ; Vančura, Jan (referee) ; Čavoj, Ondřej (advisor)
The aim of this bachelor thesis is clarifying principle of downforce, which is originating by ground effect. The thesis consists of theoretic description of this phenomen, explanations of ground effect on the racing circuit and presentation of several examples working with this effect.
|
|
|
Aerodynamics of race car underbodies
Martinek, Tomáš ; Vančura, Jan (referee) ; Čavoj, Ondřej (advisor)
The aim of this bachelor thesis is clarifying principle of downforce, which is originating by ground effect. The thesis consists of theoretic description of this phenomen, explanations of ground effect on the racing circuit and presentation of several examples working with this effect.
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