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Design, Manufacturing and Numerical Simulation of Rotating Detonation Combustor

Zamani, Milad | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 50131 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Farshchi, Mohammad
  7. Abstract:
  8. During the last six decades, there were remarkable developments in the field of gas turbines. In the early 1950’s, the effciency of gas turbines was 20% and it is improved up to more than 40% for modern gas turbines. In addition, due to the implementation of the combined power cycles, the thermal effciency have been reached to 60%. According to the recent developments, further improvements in this field seem to be more costly and diffcult to obtain. Rotating detonation combustor (RDC) is a new generation of detonation combustors which has simpler design and several advantages compared to jet engine combustors, but it has its intrinsic problems which seem resolvable. Given that the RDC system is still developing, the phenomenon governing the performance of these combustors is not yet fully recognized. In this thesis, firstly, the concepts related to the detonation wave and and the operation of RDC are identified. Secondly, the configuration of combustor, test equipment, feeding lines, and other elements - namely: check valves, selonoid valves, sonic nozzles, pressure transduser, and data acquisition system - have been prepared. Then, the primary qualitative results of experiments for the combustor and the pre-detonator are presented. Finally, in order to study the effect of injection stagnation pressure on the flow field within the combustor, the commercial software Ansys-Fluent 15.0 is utilized for 2D RDC simulation in which unsteady Euler equation and single-step chemical mechanism of hydrogen-air are used
  9. Keywords:
  10. Detonation Wave ; Experimental Investigation ; Two Dimentional Simulation ; Two Dimentional Numerical Simulation ; Rotary Detonation Combustor ; Injection Stagnation Effect

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