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Aerofoil Aerodynamic Features Optimization
Müller, Jan ; Popela, Robert (referee) ; Zelinka, Ivan (referee) ; Rozehnal,, Dalibor (referee) ; Ošmera, Pavel (advisor)
The content of the presented thesis is advanced optimization of the aerofoil wing of a general aircraft. Advanced metaheuristic optimization techniques based on evolutionary calculations and swarm algorithms are used for optimization. These algorithms are characterized by robustness of optimization and engineered degree of convergence and optimality of the solution. Within the solution, fundamental modifications of the original aerofoil optimizations were designed and implemented. A new variant of aerofoil evolutionary algorithms (aEA) was created from the original evolutionary algorithm (EA), followed by a new variant of aerofoil particle swarm optimization (aPSO) developed from the original particle swarm optimization (PSO). Then the hybridization of the mentioned methods was created in a parallel variant. The Bezier-PARSEC 3434 parameterization model that generates the aerofoil shape was used for the optimization process. A parametric model based on B-Spline was used to optimize the original aerofoil. Fluid dynamics simulation for the calculation of basic aerodynamic features (lift, drag, moment) was realized by Xfoil software. The results are then verified using fluid dynamics simulation (CFD ANSYS Fluent). From the point of view of optimization tasks developed by optimization and implementation, it is clear that this is a complex interdisciplinary task, the results of which are presented in this thesis.
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Wing leading edge active flow concept analysis
Mahdal, Vít ; Zikmund, Pavel (referee) ; Popela, Robert (advisor)
This research is focused on substitution of commonly used High-Lift devices by active flow control on the wing leading edge. The analysis is done by CFD tools with use of Reynolds-Averaged Navier-Stokes (RANS) method. In the beginning of the research, commonly used High-Lift devices are described. Solver setting and its explanation together with verification and validation is described in the following chapters. An active flow control concept is testing at the LS(1)-0413 airfoil, for 5 different positions of slots, two different slots widths (h/c= 0,0025 and 0,005) and two different blowing velocities (v_Jv_=2,22 and 4,44). In the end of this paper, physical phenomena of blowing is described together with evaluation of different cases. The best case is compared with Fowler and slotted flap at Reynolds number 2,2 million.
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Client's Profile in the boarding department of educational care centers Klíčov since 2005
Černá, Hedvika ; Bendl, Stanislav (advisor) ; Syřiště, Ivo (referee)
This bachelor thesis is concentrated on clients of Klíčov Care Centre Boarding school department for a period of 15 years, from 2005 to 2020. Objective of this bachelor thesis is to map the development of client's profile of this Care Centre when considering possible changes in basic attributes of behavioral disorders. Bachelor thesis is divided into theoretical and practical part. Beginning of theoretical part is devoted to description of Klíčov Care Centre, its history and all forms of offered services. This thesis deals with behavioral disorders and their basic characteristics. Next part focuses on the individual stages of child development with regard to the possible disorders development. Practical part is devoted to SVP Klíčov Boarding school client's profile. Necessary data was obtained by thorough comparison of annual reports and statistics of SVP Klíčov. Processing of obtained data sets led to creation of several profiles of client of SVP Klíčov. The described profiles reflect evolution of client's behaviour in respect of development cultural and social norms. Differences in the client's profile are presented in four case studies. Data collected for this work showed that most common cause for child placement to the SVP Klíčov Boarding school are problems at school. However, it was not...
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Profil návštěvníka Jihomoravského kraje pro strategii rozvoje cestovního ruchu
Karlová, Edita
Diploma thesis is focused on the description of visitors profile in the South Moravia area. This will be based on the analysis of the actual tourism activity in the area and based on a marketing research among the observed groups. The first part of the thesis is a description of a theory of tourism, tourist behaviour, tourism management and visitors profile. The analysis of the actual situation of the tourism in Brno is described by 6A and SWOT analyse method. The visitor's profiles will be defined from the researched data. According to the researched visitors profiles will be recommended a suggestion for the local agency in Brno in order to develop in the South Moravian region. These suggestions will include a recommendation for the next strategy, new collecting places and innovative research methodology.
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Application for Tracking Devices for Windows Phone OS
Pupák, Juraj ; Trchalík, Roman (referee) ; Očenášek, Pavel (advisor)
This application deals with recording of position about phone devices with help of system GPS. The application is implemented for platform Windows Phone 7.5. The Application allows to create profiles, which are evaluated with recorded positions. The evaluation is made through 2 points with Haversine formula. The theoretical part of thesis deals with technologies and GPS system, the practical part deals with design and implementation.
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Rail materials and profiles in rail transportation
Svobodová, Anežka ; Kvarda, Daniel (referee) ; Galas, Radovan (advisor)
This bachelor’s thesis is focused on the issue of the choice of rail materials and profiles. The aim is to give a comprehensive overview of the current situation in Czech Republic and some other foreign countries. The first part is dedicated to rail steels with description of structure, current usage and indication of the scopes of consecutive development. In the second part, there are described the most frequent profiles, their history and the current state. This thesis includes also discussion part which compares current problems and requirements that can be significant to some possible research.
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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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Production of Rolled Profile and Its Verification by Using Numerical Simulation
Sigmund, Lukáš ; Lidmila, Zdeněk (referee) ; Řiháček, Jan (advisor)
The thesis deals with technology of hot-rolled profiles, describing total summary of principles and conditions this process is based on. There is a draft of a calibration of profile, the application of which is subsequently verified through a numerical simulation. Futher in the thesis also was verified the mechanical properties of applied construction steel S355J2 through the up-setting test and compared the results with the used material model in the simulation software Simufact Forming. Then, the test rolling of the calibrated profile was carried out. As a next step, the dimensions of the rolled bars were compared with the results of the simulation, on the basis of which the applicability and suitability of the simulation in the future development of other profiles was verified and evaluated.
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Selected fitness aspects of professional firefighters competing in fire sport and TFA
Miřátský, Petr ; Gryc, Tomáš (advisor) ; Coufalová, Klára (referee)
Title: Selected fitness aspects of professional firefighters competing in fire sport and TFA Objectives: The aim of the thesis was to find out the level and the difference in the parameters of body constitution, postural stability and muscular and explosive force of lower limbs with groups of professional firemen competing in fire sport and TFA Methods: The research sample was represented by two groups of professional firemen (17 fire sportsmen and 17 TFA competitors). We assessed chosen parameters of body constitution (Tanita MC-980MA), postural stability (RS Footscan), explosive force (Kistler) and muscular force (Cybex Humac Norm). Assessed parameters of body constitution were percentage of body fat and fatless matter. In the tests of postural stability we assessed total travel way of the centre of pressure (TTW), narrow stand (open and closed eyes) and one-leg stand (right, left). When testing explosive force, overall produced maximal force and height of the leap were assessed. Muscular force was assessed with the help of muscular force moment in concentric muscle activity with angular velocity 60ř·s-1. Results: We found out a significant difference between the two groups in the tests of postural stability - narrow stand with open and closed eyes (F1,32 = 9,94, p<0,01), in the tests of...
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Linguistic picture of the particular somatisms in Czech
Škanderová, Adéla ; Janovec, Ladislav (advisor) ; Chejnová, Pavla (referee)
The bachelor thesis deals with a lingvistic picture of the world of the particular somatisms, namely the components of the digestive system (stomach, bile, gall bladder, heartburn, intestine). The theoretical part covers the term cognition, cognitive science and, logically, cognitive linguistics. Furthermore, it includes the indispensable and key topics which have to be taken into account to understand the concept of the linguistic picture of the world, i.e. conceptualization, categorization, metaphor, anthropocentrism etc. The practical part is interested in the real occurence of the somatisms in various language contexts. In particular, their occurence in collocations, phraseology and idiomatic expressions. The analysis is based on the profile theory and its image schema. The lingustic backround is supplemented with the psychosomatic knowledge because it appears to be a helpful science branch while completing and considering the possible connection between the occurence of somatism in the language of the specific culture and extralinguistic reality.
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