空气动力学学报
空氣動力學學報
공기동역학학보
ACTA AERODYNAMICA SINICA
2010年
1期
88-93
,共6页
脉冲爆震发动机%喷射%预膜式空气雾化喷嘴%数值模拟%索太尔平均直径(SMD)
脈遲爆震髮動機%噴射%預膜式空氣霧化噴嘴%數值模擬%索太爾平均直徑(SMD)
맥충폭진발동궤%분사%예막식공기무화분취%수치모의%색태이평균직경(SMD)
pulse detonation engine%injection%prefilmed air blast atomizer%numerical simulation%sauter mean diameter (SMD)
脉冲爆震发动机两相爆震近来得到了广泛的重视和关注.但在它走向应用之前仍有很多问题需要解决,燃油的喷射、雾化和混合就是其中之一.本文针对一种改进的预膜式空气雾化喷嘴,利用CFD程序,通过改变侧路空气射入角、空气通道直径、混合室出口孔径等参数,研究了喷嘴结构参数对雾化特性的影响,得到了汽油的雾化粒度与喷嘴结构间的关系和变化规律.并将数值模拟结果与实验结果进行对比,两者吻合较好,为喷嘴的优化设计提供了依据.
脈遲爆震髮動機兩相爆震近來得到瞭廣汎的重視和關註.但在它走嚮應用之前仍有很多問題需要解決,燃油的噴射、霧化和混閤就是其中之一.本文針對一種改進的預膜式空氣霧化噴嘴,利用CFD程序,通過改變側路空氣射入角、空氣通道直徑、混閤室齣口孔徑等參數,研究瞭噴嘴結構參數對霧化特性的影響,得到瞭汽油的霧化粒度與噴嘴結構間的關繫和變化規律.併將數值模擬結果與實驗結果進行對比,兩者吻閤較好,為噴嘴的優化設計提供瞭依據.
맥충폭진발동궤량상폭진근래득도료엄범적중시화관주.단재타주향응용지전잉유흔다문제수요해결,연유적분사、무화화혼합취시기중지일.본문침대일충개진적예막식공기무화분취,이용CFD정서,통과개변측로공기사입각、공기통도직경、혼합실출구공경등삼수,연구료분취결구삼수대무화특성적영향,득도료기유적무화립도여분취결구간적관계화변화규률.병장수치모의결과여실험결과진행대비,량자문합교호,위분취적우화설계제공료의거.
The two phase detonation of PDE(Pulse Detonation Engine) has received much attention late-ly, but there are many unsolved issues related to the application of PDE, for example, the fuel injection, at-omization and mixing. This paper aims at an improved prefilmed air blast atomizer, use CFD program to re-search the effect of atomizer structure parameters on atomization performance by changing side air injection angle, air passage diameter, mixing chamber exit diameter, obtain the relationship of fuel atomization granu-larity and atomizer structure. Comparison of the numerical simulation results with experimental results matchs quite well, and provides information for atomizer optimization design.
