流入
动态模态分解
物理
离心泵
流量(数学)
分解
机械
模式(计算机接口)
计算流体力学
表征(材料科学)
计算机科学
光学
叶轮
生态学
生物
操作系统
作者
Mijian Li,Lianzhou Wang
摘要
This paper examines the flow characteristics within a centrifugal pump under different inflow conditions using the detached-delayed eddy simulation method. It can be observed that the pressure fluctuations on the outlet tube gradually decrease with increasing distance and tend to stabilize due to viscous dissipation of the fluid and strong nonlinearity. In contrast, the flow system exhibits greater complexity and instability when operating at low flow velocity than at high flow velocity. In order to gain further insight into the flow characteristics, the sparsity-promoting dynamic mode decomposition algorithm is employed to explore the spatiotemporal evolution and coupling relationships of the flow field within a centrifugal pump under different operating conditions. This enables the identification of the flow structures that play a decisive role in the complex turbulent fields under consideration in flow analysis and reconstruction, while maintaining a balance between data utilization and fidelity. The findings of this study are anticipated to serve as a valuable reference for the research and design of centrifugal pumps.
科研通智能强力驱动
Strongly Powered by AbleSci AI