Analysis of Transient Gas-Liquid Two-Phase Flow in Liquid-Ring Pump Based on POD Modal Decomposition

	Analysis of Transient Gas-Liquid Two-Phase Flow in Liquid-Ring Pump Based on POD Modal Decomposition
	Guo, Guang-Qiang 1; Zhang, Ren-Hui 1,2; Chen, Xue-Bing 1; Jiang, Li-Jie 1
刊名	Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
	2021-02-01
卷号	42 期号:2 页码:349-356
关键词	Computational fluid dynamics Flow fields Liquids Modal analysis Pumps Time domain analysis Transient analysis Transpiration Unsteady flow Velocity Gas liquid two-phase flows Maximum relative errors Modal characteristics Proper orthogonal decomposition method Pulsating flow fields Reduced order models Spatial-temporal evolution Time domain characteristics
ISSN号	0253-231X
英文摘要	According to the complex spatial-temporal evolution of gas-liquid two-phase flow in the liquid-ring pump, the proper orthogonal decomposition (POD) method was employed to decompose the transient gas-liquid two-phase flow field in pump. The spatial basic modal characteristics of transient phase and velocity fields and the time-domain characteristics of their modal coefficients were analyzed. The reduced-order model of unsteady flow field was established, and the flow field were predicted and analyzed. The results show that POD method can realize the spatio-temporal decoupling analysis of complex flow field in liquid ring pump. The change of modal coefficients of phase and velocity fields in time domain can reflect the law of energy, frequency and phase change of modal field. The basic mode field can reflect the spatial scale change law of pulsating flow field. The flow field in the sample space can be accurately predicted by the reduced-order model, and the maximum relative errors of the predicted results for inlet pressure, phase field and velocity field are about 0.2%, 4% and 8%, respectively. The reduced-order model has a certain extrapolation accuracy. However, the error between the prediction result and CFD calculation result increases gradually when the object is gradually far away from the sample space. © 2021, Science Press. All right reserved.
语种	中文
出版者	Science Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/147755]
专题	能源与动力工程学院
作者单位	1.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Fluid Machinery and Systems, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Guo, Guang-Qiang,Zhang, Ren-Hui,Chen, Xue-Bing,et al. Analysis of Transient Gas-Liquid Two-Phase Flow in Liquid-Ring Pump Based on POD Modal Decomposition[J]. Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics,2021,42(2):349-356.
APA	Guo, Guang-Qiang,Zhang, Ren-Hui,Chen, Xue-Bing,&Jiang, Li-Jie.(2021).Analysis of Transient Gas-Liquid Two-Phase Flow in Liquid-Ring Pump Based on POD Modal Decomposition.Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics,42(2),349-356.
MLA	Guo, Guang-Qiang,et al."Analysis of Transient Gas-Liquid Two-Phase Flow in Liquid-Ring Pump Based on POD Modal Decomposition".Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics 42.2(2021):349-356.