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11	Performance of Physics-Driven Procedural Animation of Character Locomotion : For Bipedal and Quadrupedal Gait Larsson, Jarl January 2015 (has links) Context. Animation of character locomotion is an important part of computer animation and games. It is a vital aspect in achieving believable behaviour and articulation for virtual characters. For games there is also often a need for supporting real-time reactive behaviour in an animation as a response to direct or indirect user interaction, which have given rise to procedural solutions to generate animation of locomotion. Objectives. In this thesis the performance aspects for procedurally generating animation of locomotion within real-time constraints is evaluated, for bipeds and quadrupeds, and for simulations of several characters. A general pose-driven feedback algorithm for physics-driven character locomotion is implemented for this purpose. Methods. The execution time of the locomotion algorithm is evaluated using an automated experiment process, in which real-time gait simulations of incrementing character population count are instantiated and measured, for the bipedal and quadrupedal gaits. The simulations are measured for both serial and parallel executions of the locomotion algorithm. Results. Simulations of up to and including 100 characters are performance measured providing an overview of the slowdown rate when increasing the character count in the simulations, as well as the performance relations between bipeds and quadrupeds. Conclusions. The experiment concludes that the evaluated algorithm on its own exhibits a relatively small performance impact that scales almost linearly for the evaluated population sizes. Due to the relatively low performance impacts it is thus also concluded that for future experiments a broader measurement of the locomotion algorithm that includes and compares different physics solvers is of interest. Procedural animation Interactive games Multithreading Software performance Computer Sciences Datavetenskap (datalogi) Human Computer Interaction
12	Information design for product visualisations : Developement of a information design for carton boxes Johansson, Sofia January 2021 (has links) Eson Pac is a company that develops pharmaceutical packaging. One problem that thecompany currently has is that they do not have a basis for showing their products andthe information about them. This report presents the development of this to the company,through a degree project. The important focus of the work has been to developan information design that informs and visualizes their products in a user-friendly way.By following well-founded theory and research-based methods, the iterative work hastaken shape. This is partly by following an IDEO based process method called the threeI method which contains the three phases Inspire, generate Ideas and Implement. Inaccordance with Eson Pac’s wishes, certain restrictions have been placed on the productionof the result, such as colors and containing information, in addition to whichthe focus has been on producing a result that benefits the users. The work resulted in aninteractive information design with produced animations and illustrations of the company’sproducts together with information about them. / Eson Pac är ett företag som utvecklar läkemedelsförpackningar. Ett problem som företagethar i dagsläget är att de inte har ett underlag för att visa sina produkter ochinformation kring dem. Denna rapport presenterar utvecklingen av detta till företaget,genom ett examensarbete. Det viktiga fokuset i arbetet har varit att ta fram en informationsdesignsom informerar och visualiserar deras produkter på ett användarvänligtsätt.Genom att följa välgrundad teori och forksningsbaserade metoder har det itterativa arbetettagit form. Detta dels genom att följa en IDEO baserad processmetod som kallasthree I method som innehåller de tre faserna Inspirera, idegenerera och implementera.Utefter Eson Pac’s önskemål har vissa begränsningar gjorts vid framtagnignen avresultatet såsom färger och innehållande information, utöver dethar fokus legat på attta fram ett resultat som gynnar användarna. Arbetet resulterade i en interaktiv informationsdesignmed framtagna animeringar och illustrationr av företagets produktertilsammans med information kring dem. Pharma Packaging Information design Interaction design Visualization Usability Product development Product design Master of Science in Engineering Design Läkemedel Läkemedelsbranchen Användbarhet Produktutveckling Produktdesign Civilingenjör Teknisk Design Other Engineering and Technologies Annan teknik Design Design
13	Validating results from the Molten Salt Reactor Experiment by use of turbulent CFD simulations : A study of a modified U-tube shell-and-tube primary heat exchanger and radiator with molten salts Akner, Malcolm January 2021 (has links) Background Nuclear reactors utilizing molten fuels rather than solid fuels show a massive advantage in energy yield, waste handling and safety features. The only successful reactor utilizing a molten fuel was called the ‘Molten Salt Reactor Experiment’ (MSRE), built and operated in the Oak Ridge national laboratory (ORNL) in Tennessee, U.S.A. during the 1960s. The molten salts in question are fluoride compounds under the name of “FLiBe”. In this thesis, the heat exchangers of the MSRE are modelled and simulated, with the aim to test whether current computational fluid dynamics (CFD) software and mathematical models can accurately predict molten salt heat transfer behaviour. Methods All programs used are open-source and/or free-access to facilitate open collaboration between researchers in this growing field. All models and findings produced in this thesis are free to use for future research. The program Onshape was used to draw CAD-models based on hand-drawn technical documents released by ORNL. Several programs, e.g., Simscale and Salome, were used to create high detailed meshes of the heat exchangers. The CFD software Simscale and OpenFOAM have been used to simulate the heat exchangers, using the 𝑘 − 𝜔 𝑆𝑆𝑇 Reynolds averaged Navier-Stokes (RANS) turbulence model to perform a multiregion conjugate heat transfer (CHT) analysis. The program Paraview has been used for all post-processing on the large datasets. Results A working toolchain with open-source programs for CFD has been identified. Highly detailed, full-scale and accurate CAD-drawings of the two heat exchangers have been produced. Models have been finely meshed, containing tens of millions of cells, with good quality measures. The simulations produced physically sound and valuable data: Great heat transfer predictive capability with high accuracy to the data presented by ORNL. Pressure data showed a consistent over-prediction with a factor of ~2. Possibility of error within the MSRE measurement. Conclusions CHT using modern turbulence methods work well for the intended purpose and can be used by industry to simulate molten salt heat transfer. Open-source programs perform well and can be used by researchers to share ideas and progress. Doubts around certain measurements from the MSRE, showing large uncertainties. Future projects have been outlined to continue the work performed in this thesis. Molten salt reactors show fantastic promise as an energy generation method and should be seriously considered for the future of clean, reliable energy. CFD MSRE CAD CHT experiment molten liquid salt fluid mechanics mechanics fluid LTU nuclear reactor nuclear reactor generation four generation IV copenhagen atomics copenhagen atomics space engineering space engineering aerospace thesis master's thesis master's Malcolm Akner Erik CFD MSRE CAD CHT flytande salt strömningslära strömningsmekanik fluid fluidmekanik LTU kärnreaktor generation fyra generation IV copenhagen atomics rymdteknik flygteknik ingenjör civilingenjör examensarbete Malcolm Akner Erik Aerospace Engineering Rymd- och flygteknik

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