563 燃焼振動の制振手法に関する基礎的検討

概要

論文の詳細を見る
Combustion oscillation in burning appliances such as gas turbines and boilers is often appeared as a fluctuation of pressure, flow velocity and heat release and causes damage and performance degradation of apparatus. The lean premix combustion considering recent regulation on NOx emission often brings combustion oscillation. So, it is necessary to find suppression methods of these oscillations. In this study, we express combustion oscillation as one-dimensional phenomena, and analyze pressure and flow velocity fluctuations. By varying parameters such as combustion chamber length, position of reacting zone, preheat temperature and equivalent ratio, the insta- bility conditions are evaluated based on eigenfrequency analysis. Furthermore, the experimental apparatus is set up to investigate combustion oscillation.
一般社団法人日本機械学会の論文
2009-08-03