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Quantitative comparison of used mesh for CFD software ANSYS Fluent
Koudelková, Kateřina ; Klas, Roman (referee) ; Štefan, David (advisor)
Creating a good computational mesh is one of the crucial activities in any CFD calculation. CFD software aim to make a mesh generation as simple and automated as possible, due to its time-demanding nature. ANSYS Fluent has introduced a tool for partially automatic mesh generation, a method called Mosaic mesh, which should ensure that the best type of mesh element is used in each part of the geometry for optimal results. Polyhexcore is the latest computational mesh generation method used by Mosaic mesh technology. This thesis aims to compare the Polyhexcore mesh with other types of computational meshes on an aerodynamic test problem.
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CFD simulation of refrigerant flow inside the semihermetic compressor
Tuhovčák, Ján ; Knotek, Stanislav (referee) ; Katolický, Jaroslav (advisor)
The CFD simulation of cooling piston compressor Stream, manufactured by Emerson company, is the topic of this diploma thesis. Analysis of moving parts (piston, valves) and refrigerant or physical settings for simulation were based on experimental data provided by Emerson. The goal of the thesis is to test opportunities of Star-CCM+ in simulating the flow inside the compressor. In the end there will be a comparison of experimental data and results from the simulation. The thesis also contains a theoretical background of piston compressors and phenomenon following the operating compressor.
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The flow analysis inside semi-hermetic reciprocating compressor
Bouchal, Patrik ; Hejčík, Jiří (referee) ; Tuhovčák, Ján (advisor)
The topic of this diploma thesis is CFD simulation of flow inside CO2 semi-hermetic reciprocating compressor Stream manufactured by Emerson. The goal of this thesis is to analyze critical points inside the compressor with regard to excessive entrainment of oil by flowing refrigerant by means of CFD simulation using ANSYS CFX. Simulation for both single-phase and two-phase flow is part of the thesis and results from them are analysed.
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The flow analysis inside semi-hermetic reciprocating compressor
Bouchal, Patrik ; Hejčík, Jiří (referee) ; Tuhovčák, Ján (advisor)
The topic of this diploma thesis is CFD simulation of flow inside CO2 semi-hermetic reciprocating compressor Stream manufactured by Emerson. The goal of this thesis is to analyze critical points inside the compressor with regard to excessive entrainment of oil by flowing refrigerant by means of CFD simulation using ANSYS CFX. Simulation for both single-phase and two-phase flow is part of the thesis and results from them are analysed.
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CFD simulation of refrigerant flow inside the semihermetic compressor
Tuhovčák, Ján ; Knotek, Stanislav (referee) ; Katolický, Jaroslav (advisor)
The CFD simulation of cooling piston compressor Stream, manufactured by Emerson company, is the topic of this diploma thesis. Analysis of moving parts (piston, valves) and refrigerant or physical settings for simulation were based on experimental data provided by Emerson. The goal of the thesis is to test opportunities of Star-CCM+ in simulating the flow inside the compressor. In the end there will be a comparison of experimental data and results from the simulation. The thesis also contains a theoretical background of piston compressors and phenomenon following the operating compressor.
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