1Mechanical Engineering Department, C. K. Pithawalla College of Engineering and Technology, Surat - 395007, INDIA.
2Mechanical Engineering Department, S V National Institute of Technology, Surat - 395007, INDIA.
The challenges in designing high performance combustion systems have not changed significantly over the years, but the approach has shifted towards a more sophisticated analysis process. A technical discussion on combustion technology status and needs will show that the classic impediments that have hampered progress towards near stoichiometric combustion still exist. Temperature rise, mixing, liner cooling, stability, fuel effects, temperature profile control and emissions continue to confront the aerodynamic and mechanical designers with a plethora of engineering dilemmas and trade-offs. The design of can-annular type combustion chamber is presented according to the design procedure presented herein. The numerical simulation of the designed can-annular type combustion chamber for small gas turbine engine is carried out using commercial CFD code CFX. The exit temperature quality is not uniform. This may be due to very low air flow rates and secondly the intermediate zone is neglected. To overcome this lacuna, a mixing length concept is introduced. The numerical results give near uniform temperatures at the exit. These results are validated using experimentation.
Gas Turbine Combustion Chamber, Can-annular Combustion, Mixing Length
