当量比和质量通量对两相旋转爆震波影响数值研究  

Numerical Study on the Influence of Equivalent Ratio and Mass Flux on Two-Phase Rotating Detonation Wave

作　　者：马元 邹刚 于光辉 MA Yuan;ZOU Gang;YU Guang-hui(Qingdao Campus of Naval Aeronautical University,Qingdao 266100,China)

机构地区：[1]海军航空大学青岛校区,山东青岛266100

出　　处：《工业技术创新》2020年第6期112-116,共5页Industrial Technology Innovation

摘　　要：采用离散相模型(DPM),对不同当量比和质量通量下的两相旋转爆震波进行二维数值模拟研究,分析当量比和质量通量对非预混、非均匀喷注条件下两相旋转爆震波参数的影响。研究发现:1)爆震波在当量比为1.0附近时,峰值温度取得最大值,高度取得最小值,但当量比较低时,燃料利用率较高,综合确定当量比0.3为爆震波自持的当量比下限;2)爆震波峰值压力随质量通量的增加而增加,爆震波高度、峰值温度、传播速度随质量通量的增加而先增加后保持不变;当质量通量为50 kg/(m^2·s)时,燃烧室出口流动基本达到壅塞状态,当质量通量达到100 kg/(m^2·s)时,整个出口截面均为超声速流动。A two-dimensional numerical study is carried out for the two-phase rotating detonation wave with different equivalence ratio and mass flux by using discrete phase model(DPM),to analyze the influence of equivalence ratio and mass flux on the parameters of two-phase rotating detonation wave under the condition of non-premixed and non-uniform injection.The results show that:1)when the equivalent ratio of the detonation wave is 1.0,the peak temperature gets the maximum value and the height gets the minimum value;however,when the equivalent is low,the fuel utilization rate is higher;through comprehensive evaluation,the equivalent ratio 0.3 is the lower limit of the self-holding equivalent ratio of the detonation wave;2)the peak pressure of the detonation wave increases with the increase of mass flux,while the height,peak temperature and propagation speed of the detonation wave first increase and then become constant with the increase of the mass flux;when the mass flux is 50 kg/(m2·s),the flow of the combustor exit is basically blocked,and the whole exit section is with supersonic flow when the mass flux reaches 100 kg/(m2·s).

关 键 词：当量比 质量通量 两相旋转爆震波 离散相模型 自持 燃料利用率 非均匀喷注 

分 类 号：O381[理学—流体力学]