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Modeling of Turbojet Propulsion Performance and Experimental Validation

Pourfarzaneh, Hossein | 2011

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  1. Type of Document: Ph.D. Dissertation
  2. Language: Farsi
  3. Document No: 41368 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Hajilouy Benisi, Ali; Farshchi, Mohammad
  7. Abstract:
  8. The propulsion system plays a significant role in determining of mission and flight regime of an air craft. This system, provides the propulsion force for an air craft. A comprehensive model based on the specifications of gas turbine cycle, with acceptable accuracy, is necessary for quick estimating of the engine performance in different phases of design and development of a propulsion system. The structure and performance of the turbojet engine is elaborated in this project and the previous researches and their simulating methods of the turbojet engine are reviewed. The research plan is justified by explanation of the project’s objects and its assumptions. Then, the zero-dimensional equations are developed and the similarity assumptions and scaling method with a constant coefficient is reviewed. Furthermore, the scaling method with a variable coefficient is introduced and compared with scaling method with a constant coefficient . At this stage , the turbojet engine model is presented on design as well as off design points. Then, based on governing equations and loss models, one-dimensional model of the turbojet components are prepared on design as well as off design points. Following the explanation of the gas turbine laboratory establishment and experimental procedure, zero-dimensional and one-dimensional modeling assessment are performed. Finally, after summing up, confirmed models based on experimental test results are completed and optimized suggestions in regard of the turbojet engine components are presented
  9. Keywords:
  10. One-Dimentional Modeling ; Experimental Test ; Scale Models ; Zero-Dimensional Modeling

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