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Using SolidWorks for model preparation in CFD
Švaňhal, Radek ; Klas, Roman (referee) ; Rudolf, Pavel (advisor)
This bachelor’s thesis objective is to analyze utilization of program SolidWorks for preparing CFD (Computational Fluid Dynamics) models. First part describes the process of modelling a finite volume of a Francis turbine rotor. Also, the most useful functions and modelling procedures are presented. Second part analyzes pros and cons of using SolidWorks for CFD model preparation. In the last part the model is imported to pre-processor Gambit where meshing tools and procedures are introduced. In conclusion the thesis summarizes the main benefits of using a stand-alone specialized CAD software for CFD modelling.
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Air condition of the restaurant
Král, Tomáš ; Gebauer, Günter (referee) ; Šikula, Ondřej (advisor)
This thesis describes the creation of ventilation systems in the specified restaurant. The pur-pose of this investigation is to design the air conditioning system so as to create the optimal microclimate conditions in all operating parts of the building; such as a kitchen, restaurant, social hall or an apartment. I will use available computer software and adhere to the applica-ble regulations and standards. Using computer simulations, I will assess the current status of the air distribution in respective parts of the building and propose its optimization, which in turn will provide an optimal internal microclimate.
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CFD Calculations in Turbomachinery and their Validation
Váchová, J. ; Louda, P. ; Příhoda, Jaromír ; Luxa, Martin ; Šimurda, David
Numerical data obtained by 2D compressible flow CFD simulation were validated by the comparison with experimental results. The investigation was made on the mid-section of the 48" long rotor blade and it was focused on the effect of shock-wave interactions with shear layers. This interaction results in the laminar/turbulent transition where separated flow occurs and it has impacts on flow structure and the blade cascade losses. Numerical simulations were carried out by two different codes: the commercial code NUMECA based on the gamma-Re transition model connected with the SST k-epsilon/k-omega turbulence model and in-house code of the Dept. of Technical mathematics, CTU Prague/ Institute of Thermodynamics in Prague. Simulations of the laminar and the fully turbulent flows were accomplished for comparison using the same numerical approach.
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IMPLEMENTATION OF k-k(L)-omega TURBULENCE MODEL FOR COMPRESSIBLE TRANSITIONAL FLOW INTO OPENFOAM
Kožíšek, Martin ; Martinez, J. ; Fürst, J. ; Příhoda, Jaromír ; Doerffer, P.
This paper deals with the results of implementation of k-kL-ω RANS turbulence model for compressible transitional flow into OpenFOAM. This model was firstly proposed by Walters and Leylek (2005) and utilizes the approach of laminar kinetic energy in order to predict transition between laminar and turbulent flows. The capability of laminar/turbulent transition modelling is tested for the basic flat plate test cases and for the VKI turbine cascade. The comparison between new implementation, k-kL-ω for incompressible flow supplied in OpenFOAM and g−Req model from commercial CFD package FINE/Turbo distributed by NUMECA Int. are shown. The properties of the implementation of k-kL-ω model for compressible flow simulations into OpenFOAM are discussed.
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