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Nozzle Design with Considertion for Chemical Reactions

Sadeghzadeh, Mohammad Hassan | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49656 (46)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Farahani, Mohammad
  7. Abstract:
  8. In this thesis a computational method for the design of optimum nozzle contour with consideration for chemical reactions has been presented. This method combines the method of characteristics, CFD and an optimization algorithm to develop a nozzle suitable for a specific operational condition. First using the method of characteristics an isentropic nozzle contour is achieved. then using the FLUENT solver, this initial contour is solved for flow containing finite-rate reactions and boundary layer effects and by iterating this process combined with an optimization algorithm, an optimum nozzle is found. Properties took into consideration in this method, in addition to chemical reaction between oxidizer and fuel, include viscosity and boundary layer effects, weight and structural issues and flow as a function of time (an issue which exists in solid-fuel rocket engines). The optimization method used in this method considers parameters such as exit velocity, thrust, weight and dependence on time, and with each iteration makes changes in the contour geometry until an optimum design is acquired. This method goes through all these steps automatically and user need only input their operational conditions and desired parameters for the software to conduct the process of designing the optimum nozzle
  9. Keywords:
  10. Nozzle Design ; Solid Fuels ; Optimization Method ; Computational Fluid Dynamics (CFD) ; Characteristics Method ; Reacting Flow

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