A STUDY OF THE FLOW AND FLAME CHARACTERISTICS OF A SWIRL BURNER WITH STAGNATION FUEL FLOW INJECTION

• Main Authors: Kuo-Yuan Lee, 李國源
• Other Authors: Yei-Chin Chao
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/10792145260335565810

碩士 === 國立成功大學 === 航空太空工程學系碩博士班 === 90 === The swirl flame with axial fuel injection has been intensively investigated in the past few decades. It is found that the swirl flame with axial fuel flow injection has major advantages of fast fuel-air mixing rate, enhanced combustion stability and low NOx emission. However, the swirl flame with axial fuel flow injection has some shortcomings: non-uniform distribution of temperature field and excessive emission of carbon monoxide. In this investigation a new type of swirl flame with stagnation fuel flow injection is reported here. The major purposes are to extend regions of uniform high temperature and to decrease the emission of carbon monoxide by means of a stagnation plate above the fuel exit. It is found that the swirl flame with stagnation fuel flow injection yields extended regions of uniformly high-temperature and about one fifth of carbon monoxide emissions with the lowest NO emission in comparison with axial fuel flow injection case. The two major disadvantages of the swirl flame with axial fuel injection are improved and demonstrated successfully.