摘要
运用计算流体动力学方法对渐开线三叶罗茨鼓风机排气过程中的脉动进行了可压缩非定常流动的数值模拟,在动静耦合区域采用了非一致网格界面,用动网格方法实现了排气区域流场的容积变化,通过将数值模拟结果与半经验理论公式计算结果的对比分析,探讨了运转周期内气流脉动的分布特性和对排气流量的影响.
The pulsation in the exhaust process of three-lobe involute type Roots blower was simulated in CFD method under the compressible, unsteady condition . To achieve the change of exhaust area that dynamic mesh updating method and multiple reference frame at rotor-stator coupled area were adopted. The result of numerical simulation was contrasted with computing result of the semi-experience theory formula. It was discussed that the characteristic of air flow fluctuation in a period and influence to the exhaust flux.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2007年第3期400-405,共6页
Journal of Aerospace Power
关键词
航空
航天推进系统
罗茨鼓风机
数值模拟
动网格
排气流量
脉动
aerospace propulsion system
Roots blower
numerical simulation
dynamic mesh
exhaust flux
fluctuation
