ダンプディフューザ型燃焼器の流動機構

概要

論文の詳細を見る
The paper presents the fluid flow measurement in a two-dimensional dump diffuser to clarify the flow regimes in the region between a pre-diffuser and a flame tube. The pre-diffuser angle and dump gap are selected as the basic parameters in the test, where the dump gap is a distance between pre-diffuser outlet and flame tube head. Data of the wall static pressure and pressure loss were taken. Laser doppler velocimeter was used for the measurement of velocity components. In conclusion, prediffuser geometry and the dump gap affect the overall performance. The pressure rise becomes small, in case of the small dump gap, since enough pressure recovery is not obtained in the prediffuser. This mecha-nism is caused by the shift of the jet downstr-eam of the pre-diffuser and the entrainment in the re-circulating zone just upstream of the flame tube head.
社団法人日本ガスタービン学会の論文
1988-06-10