化工学报2009，Vol.60Issue(11)：2699-2704,6.
去耦室压力变化对脉动燃烧器尾管传热的影响
Influence of pressure variation in decoupling chamber on heat transfer in tailpipe of self-excited pulse combustor
翟明 1董芃 1彭三珑 1夏新林1
作者信息
- 1. 哈尔滨工业大学能源科学与工程学院,黑龙江,哈尔滨,150001
- 折叠
摘要
Abstract
Decoupling chamber is an important component of a pulse combustor which is not only for noise elimination, but also to ensure the acoustics boundary conditions at the exit of tailpipe as to maintain the performance of the whole combustor. Thus, a decoupling chamber pressure control system was designed and installed at the end of the tailpipe of a valveless self-excited pulse combustor. The relative pressure in the decoupling chamber was controlled from about -10 kPa to 10kPa through a blower, and the influence of pressure variation on the heat transfer in tailpipe was investigated. Experimental results showed that when the pressure in decoupling chamber is higher or lower than atmospheric pressure, the heat transfer coefficient in tailpipe would be increased, the heat transfer coefficient in tailpipe is relatively higher when pressure in decoupling chamber is lower than atmospheric pressure, and both the magnitude of pressure amplitude and the velocity ratio in the combustor can reflect the heat transfer coefficient in tailpipe.关键词
自激脉动燃烧器/去耦室/压力变化/尾管传热Key words
self-excited pulse combustor/ decoupling chamber/ pressure variation/ heat transfer in tailpipe分类
能源科技引用本文复制引用
翟明,董芃,彭三珑,夏新林..去耦室压力变化对脉动燃烧器尾管传热的影响[J].化工学报,2009,60(11):2699-2704,6.
