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Turbomachinery

Code 15284
Year 2
Semester S1
ECTS Credits 6
Workload T(30H)/TP(30H)
Scientific area Mechanics and Thermodynamics
Entry requirements Fluids mechanics and Computational mechanics.
Mode of delivery Presential.
Work placements Not applicable.
Learning outcomes This course aims to apply the acquired knowledge of Aero-Hydrodynamics to the analysis and design of cascades of blades and rows of turbomachinery blades.
After the frequency of this course, students should:
1. Be able to analyze the performance of turbines, pumps, compressors and fans (axial and radial).
2. Be able to choose and size the stages suitable for power generation in land.
3. Be able to scale a propulsion engine of an aircraft (turboprop, turbojet and turbofan).
4. Demonstrate ability in the use of specialized CFD software to design rows and cascades of blades for turbines and compressors.
Syllabus 1. Introduction: general classification of turbomachines; basic elements and working principle. 2. Governing equations of tubomachines: continuity equation; Euller's equation for turbomachines; energy equation for compressible flow machines; entropy equation. 3. Two-dimensional cascades of blades: dynamic analysis and performance parameters; drag and lift coefficients; eficiency of a cascade; design steps; direct and inverse methods. 4. Dimensional analysis and similitude conditions: similitude laws; non-dimensional global performance parameters; local design variables; turbomachine families; non-dimensional characteristic curves; experiments in wind tunnel. 5. Computational modeling: implementation of a compressor cascade of blades in dedicated software (Fluent); exploration of the results.
Main Bibliography 1. S. L. Dixon, C. A. Hall (2010): Fluid Mechanics and Thermodynamics of Turbomachinery, Elsevier BH, Boston.
2. R. I. Lewis (1996):Turbomachinery Performance Analysis, John Wiley & Sons Inc., New York.
3. C. R. Maliska (2004):Transferência de calor e Mecânica dos Fluidos Computacional, LTC Editora, Rio de Janeiro.
4. J. Tu, G. H. Yeoh (2008): Computational Fluid Dynamics, Elsevier BH, Boston.
5. A. C. Mendes (2001): Máquinas de Conversão de Energia Rotodinâmicas, Serviços Gráficos da Universidade da Beira Interior,Covilhã.
6. A. C. Mendes (1999): Fundamentos de Projecto e Análise do Desempenho de Turbomáquinas, Serviços Gráficos da Universidade da Beira Interior, Covilhã.
Teaching Methodologies and Assessment Criteria The students are invited to elaborate and present their individual work plan for the semester. The students perform a research and development project of a turbomachine. They equally perform a laboratory assignment about the preliminary testing of a turbomachine.
The advancements in the assignments are regularly reported to the teacher. The students are encouraged to express their critical sense in regards to the choices taken, structure and objectives of the proposed assignments.
Language Portuguese. Tutorial support is available in English.
Last updated on: 2021-10-26

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