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Aerodynamic components of passenger cars
Petrskovský, Adam ; Vančura, Jan (referee) ; Vondruš, Jan (advisor)
This bachelor thesis is focused on aerodynamics of the cars. Theories on aerodynamics characterizations as well as force exertions are presented here. Moreover, the influence of aerodynamics on fuel consumption and formation of harmful emissions is described. The thesis also provides a comprehensive overview of particular aerodynamic devices used on cars. Furthermore, CFD simulations of four aerodynamic devices on a simplified model of car are included. The results of these simulations are then evaluated and the respective aerodynamic devices are subsequently compared to find out which of them has contributed the most to the improvement of aerodynamic characteristics of the vehicle.
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Design of geometric elements to improve the aerodynamics of the front wing of the formula student car
Šulík, Daniel ; Trusík, Vojtěch (referee) ; Štefan, David (advisor)
This master's thesis focuses on the design of a new front wing for Formula Student. The first chapter dissects basic aerodynamic concepts and principles utilized in wing aerodynamics design. The second chapter showcases front wing concepts from various Formula Student teams. The third chapter introduces the official regulations for Formula Student 2024, primarily focusing on vehicle aerodynamic devices. The fourth chapter presents iterative designs of front wings modelled in Creo 7.0. The fifth chapter explains the process of preparing the model for simulation and demonstrating how vehicle geometry is adjusted in the SpaceClaim environment. Furthermore, it elaborates on generating the computational mesh and setting boundary conditions for car simulations on straights and in cornering. The initialization process of the task and the computation itself are also explained. The sixth chapter evaluates the results from simulations. Aerodynamic values such as downforce and drag are analysed on the front wing. Changes in the vehicle's COP position and the velocity and pressure fields around the front wing are also monitored. Flow characteristics around the underfloor, whose aerodynamic efficiency depends on the front wing design, are analysed too. The seventh chapter explains the production process and composition of the front wing.
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Flight performance of the STOL light sport airplane
Koudelka, Jaroslav ; Sklenář, Filip (referee) ; Juračka, Jaroslav (advisor)
The aim of this bachelor thesis is to evaluate effect of individual parts of the selected aircraft on its aerodynamic characteristics and to summarize possible directions of aircraft modifications with taking into account increasing its cruising speed while maintaining STOL performances. The first part of this thesis is focused on the description of selected aircraft construction and its legislative categorization. Then follows the theoretical part describing the basic terms of horizontal flight mechanics, the creation of drag and drag types. The practical part contains the evaluation of the drag influence for individual aircraft parts, their possible directions of improving and the final summary how the modified parts influence flight performances. In conclusion they are results comparing the original aircraft configuration with the modified one with taking cruising speed into account. For the modified version there is an evaluation of its impact on the STOL performances.
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Aerodynamic properties of different front wing specifications on formula race car
Šulík, Daniel ; Zemanová, Lucie (referee) ; Štefan, David (advisor)
This bachelor’s thesis focuses on the aerodynamic properties of front wings on Formula 1 cars. The first chapter discusses the basic aerodynamic principles of fluids and gases. The second chapter discusses the historical evolution of front wings in Formula 1. Third chapter talks about the latest aerodynamic regulations and their benefits for the sport. In the last chapter there is a practical part with an air flow simulation on four different wings and their aerodynamic properties are compared.
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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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Truck aerodynamic parameters
Šilar, Josef ; Vančura, Jan (referee) ; Hejtmánek, Petr (advisor)
The main goal of this bachelor´s work is to depict and describe terms form the aerodynamics field in order to understand the problem of aerodynamics of the vehicles. Here is created overall view of constructive elements that lower aerodynamic resistance of vehicles and methods of survey of aerodynamic parameters. The work also contain the difference of mentioned parameters of suburban and truck cars.
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