摘要
利用Realizable k-ε湍流模型对某对旋风机进行了全流道非定常湍流计算,预测了前后两级叶轮附近两对动-静干涉面以及一对动-动干涉面上压力脉动的频域分布情况,分析了压力脉动沿干涉面径向的传播变化规律.分析结果表明,后级叶轮叶片对叶轮区域压力脉动的影响要远大于前级叶轮.分析结果可以作为对旋风机叶轮部分气动噪声预估的参考依据.
A three-dimensional unsteady flow was simulated using the Realiable k-ε turbulence model in full flow passage of a counter-rotating axial flow fan.Then, the frequency domain distributing of pressure pulsation was predicted at positions in two pairs of move-move interfaces and a pair of move-stator interfaces a round the fore and after impellers.The spread and diversification rule of pressure pulsation along the radial direction of the interfaces was also analyzed.The simulation result indicated that the impact to the pressure pulsation a round impellers of the second impeller is much stronger than the first one.The results can be used as a reference of the numerical study on the aerodynamic noise field of axial flow fans.
出处
《山东大学学报（工学版）》
CAS
2008年第6期7-10,20,共5页
Journal of Shandong University（Engineering Science）
