Direct Sailing Variable Acceleration Dynamics Characteristics of Water-Jet Propulsion with a Screw Mixed-Flow Pump

doi:10.3390/app9194194

	Direct Sailing Variable Acceleration Dynamics Characteristics of Water-Jet Propulsion with a Screw Mixed-Flow Pump
	Han, Wei1,2 ; Shang, Ting 1; Su, Min3 ; Gong, Chengyong1 ; Li, Rennian1,2 ; Meng, Bin 4
	2019-10
发表期刊	APPLIED SCIENCES-BASEL
卷号	9 期号:19
摘要	Strong nonlinearity and the relevance of time-varying dynamic parameters in the maneuverable process of water-jet propulsion were major problems encountered in the prediction of variable acceleration dynamics characteristics. The relationships between the thrust and rotation speed of a screw mixed-flow pump, drag and submerged speed of water-jet propulsion were obtained from flume experiments and numerical calculations, based on which a dynamic model of pump-jet propulsion was established in this paper. As an initial condition, the numerical solution of the submerged speed with respect to time was inputted to computational fluid dynamics (CFD) for unsteady calculation based on a user-defined function (UDF). Thus, the relationships between the acceleration, drag, net thrust, propulsion torque and efficiency with respect to time were revealed. The results indicate that the relationship between the thrust and rotational speed of a water-jet propeller is a quadratic function, which agrees well with the experimental values. The variation of submerged speed with respect to time satisfies a hyperbolic tangent function distribution. The acceleration increases sharply at the beginning and then decreases gradually to zero, especially at high rotation speeds of the water-jet pump. The variations in drag and propulsion efficiency with respect to time coincide with the step response of a second-order system with critical damping. The method and results of this study can give a better understanding of the changes in dynamic parameters such as velocity, acceleration, thrust, and drag during the acceleration of a pump-jet submersible and helped to estimate the effects of pump performance on water-jet propulsion kinetic parameters.
关键词	water-jet propulsion screw mixed-flow pump variable acceleration dynamics characteristics
DOI	10.3390/app9194194
收录类别	SCI ; SCIE
语种	英语
资助项目	National Key RAMP;D Program Projects of China[2018YFB0606100] ; National Natural Science Foundation of China[51669012][51579125]
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000496258100252
出版者	MDPI
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/64141
专题	能源与动力工程学院电气工程与信息工程学院
通讯作者	Shang, Ting; Su, Min
作者单位	1.Lanzhou Univ Technol, Dept Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China; 2.Lanzhou Univ Technol, Key Lab Fluid Machinery & Syst, Lanzhou 730050, Gansu, Peoples R China; 3.Lanzhou Univ Technol, Dept Elect & Informat Engn, Lanzhou 730050, Gansu, Peoples R China; 4.Gansu Diantou Jiudianxia Water Conservancy Hinge, Dinxi 730500, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Han, Wei,Shang, Ting,Su, Min,et al. Direct Sailing Variable Acceleration Dynamics Characteristics of Water-Jet Propulsion with a Screw Mixed-Flow Pump[J]. APPLIED SCIENCES-BASEL,2019,9(19).
APA	Han, Wei,Shang, Ting,Su, Min,Gong, Chengyong,Li, Rennian,&Meng, Bin.(2019).Direct Sailing Variable Acceleration Dynamics Characteristics of Water-Jet Propulsion with a Screw Mixed-Flow Pump.APPLIED SCIENCES-BASEL,9(19).
MLA	Han, Wei,et al."Direct Sailing Variable Acceleration Dynamics Characteristics of Water-Jet Propulsion with a Screw Mixed-Flow Pump".APPLIED SCIENCES-BASEL 9.19(2019).