Transient Characteristics of Water-Jet Propulsion with a Screw Mixed Pump during the Startup Process

doi:10.1155/2020/5691632

	Transient Characteristics of Water-Jet Propulsion with a Screw Mixed Pump during the Startup Process
	Han, Wei 1,2; Zhang, Teng 2; Su, You Liang 2; Chen, Ran 2; Qiang, Yan 2; Han, Yang 2
刊名	Mathematical Problems in Engineering
	2020
卷号	2020
关键词	Aircraft propulsion Computational fluid dynamics Hydrodynamics Pumps Screws Boundary and initial conditions Energy characteristics Hydrodynamic characteristics Numerical calculation Transient characteristic User-defined functions Water jet propulsions Water-jet propellers
ISSN号	1024123X
DOI	10.1155/2020/5691632
英文摘要	In order to investigate the transient hydrodynamic characteristics of water-jet propulsion with a screw mixed pump during the startup period and to overcome the difficulties in measuring the transient process parameters over a very short period of time, a method based on a flume experiment combined with computational fluid dynamics (CFD) is proposed. The thrust and torque of the pump-jet propulsion according to mooring status at different rotational speeds were measured by the test, which provided a group of data for the boundary and initial conditions of the numerical calculation of the user-defined function (UDF). Consecutive changes in the parameters of the water-jet propulsion dynamics can be captured from the numerical simulation of the startup process with the UDF. Thus, the transient hydrodynamic characteristics of water-jet propulsion according to time or rotation speed were obtained. The results show that the relationship between the thrust or torque of the water-jet propeller and pump rotational speed is close to the quadratic functions. The energy characteristic parameters of screw mixed water-jet pump, such as the flow rate, head, shaft power, and efficiency, rapidly increase and decrease and then remain relatively stable. © 2020 Wei Han et al.
WOS研究方向	Engineering ; Mathematics
语种	英语
出版者	Hindawi Limited, 410 Park Avenue, 15th Floor, 287 pmb, New York, NY 10022, United States
WOS记录号	WOS:000536805500006
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115250]
专题	能源与动力工程学院
作者单位	1.Key Laboratory of Fluid Machinery and Systems, Lanzhou; 730050, China 2.Lanzhou University of Technology, College of Energy and Power Engineering, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Han, Wei,Zhang, Teng,Su, You Liang,et al. Transient Characteristics of Water-Jet Propulsion with a Screw Mixed Pump during the Startup Process[J]. Mathematical Problems in Engineering,2020,2020.
APA	Han, Wei,Zhang, Teng,Su, You Liang,Chen, Ran,Qiang, Yan,&Han, Yang.(2020).Transient Characteristics of Water-Jet Propulsion with a Screw Mixed Pump during the Startup Process.Mathematical Problems in Engineering,2020.
MLA	Han, Wei,et al."Transient Characteristics of Water-Jet Propulsion with a Screw Mixed Pump during the Startup Process".Mathematical Problems in Engineering 2020(2020).