《泵内流体动力学》课程教学大纲（本科）

1、泵内流体动力学(Hydrodynamics in Pumps)课程代码：02410081学分：2学时：30 （其中：课堂教学学时：30实验学时：0上机学时：0课程实践学时：0 ）先修课程：高等数学，线性代数，大学物理适用专业：动力工程及工程热物理教材： , Christopher E. Brennen, Oxford University Press一、课程性质与课程目标（-）课程性质（需说明课程对人才培养方面的贡献）泵流体力学是流体机械及其自动化专业的一门选修课程。该课程结合流体力学基本概念和理 论，对透平机械，尤其是泵的设计原理和工作特性做出系统的介绍。特别是对水泵内部流动相关的 两个特定

2、问题，空化和非定常流动，进行详细介绍和讨论。该课程建立在高等数学，机械原理，流 体机械原理等课程知识的基础上，通过本课程的学习，使学生掌握叶片泵的专业知识，为学生毕业 后从事本专业及相关专业的工作及深造打下基础。（二）课程目标（根据课程特点和对毕业要求的贡献，确定课程目标。应包括知识目标和能力目标。） 课程目标1:掌握认识泵内复杂流动现象的物理本质的能力，掌握对复杂流动问题描述的数 学模型能够正确理解和选择应用的分析能力。课程目标2：能够将数学、自然科学、工程基础和专业知识用于解决流体机械领域复杂工程 问题课程目标3：能够基于科学原理并采用科学方法对复杂流体机械工程问题进行研究，包括设 计仿真

3、、实验、分析与解释数据、并通过信息综合得到合理有效的结论注：工程类专业通识课程的课程目标应覆盖相应的工程教育认证毕业要求通用标准；（三）课程目标与专业毕业要求指标点的对应关系（认证专业专业必修课程填写）本课程支撑专业培养计划中毕业要求指标点1m-n1.毕业要求1-1:2.毕业要求注：课程目标与毕业要求指标点对接的单元格中可输入“，也可标注“H、M、L”。课程目标毕业要求指标课程目标1课程目标2毕业要求1-1二、课程内容与教学要求（按章撰写）第一章（一）课程内容In this chapter, we present the basic concepts commonly used in the

4、analysis of fluid flow. We start this chapter with a discussion of the phases of matter and the numerous ways of classification of fluid flow. Then, we review the basic principles to describe fluid flow problems. Three conservation laws will be discussed in details: the conservation of the mass, the

5、 conservation of the momentum and the conservation of the energy.（二）教学要求Clear know about the properties of the fluid flow, such as viscosity, surface tension, capillary force, the pressure （vapor pressure）.The students should understand the physics behind mathematical equations of the conservation l

6、aws and thus adapt the equation to describe the flow problems correctly.（三）重点与难点（若不单独列出，需在教学要求中适当注明）.重点Deep understand about the conservation laws of fluid motion and the specific form of the conservation of energy - the Bernoulli equation and its general form in the system with turbomachines.难点Disc

7、riminate those concepts: viscous versus inviscid regions of flow, internal versus external flow, compressible versus incompressible flow, laminar versus turbulent flow, natural versus forced flow, and steady versus unsteady flow.第二章（一）课程内容We start this chapter with a general physical description of

8、internal flow and the velocity boundary layer. We continue with a discussion of the dimensionless Reynolds number and its physical significance. We then discuss the characteristics of flow inside pipes and introduce the pressure drop correlations associated with it for both laminar and turbulent flo

9、ws. Then we present the minor losses and determine the pressure drop and pumping power requirements for real-world piping systems. Additionally, we present an overview of turbulent theory. Finally, we discuss how to properly match the requirements of a fluid flow system to the performance characteri

10、stics of a pump.（-）教学要求Calculate the major and minor losses in the system according to the given condition correctly and thus determine the requirement of pumps.Students have to be able to give reasonable design of simple piping systems based on the knowledge of fluid mechanics.（三）重点与难点（若不单独列出，需在教学要

11、求中适当注明）.重点Flow losses in the piping system with laminar and turbulent flows.难点The understanding on turbulent flows will be difficult to students. Modelling turbulent flows: RANS and RSM based models.第三章（-）教学内容In this chapter we discuss the basic principles of a common and important application of fl

12、uid mechanics, turbomachinery. We discuss pumps in more detail, mostly qualitatively, explaining the basic principles of their operation. A significant portion of this chapter is devoted to turbomachinery scaling laws一a practical application of dimensional analysis.（-）教学要求We emphasize preliminary de

13、sign and overall performance of turbomachines rather than detailed design. The students should master the basic principles for pump design.Students have to understand how the scaling laws are used in the design of new turbomachines that are geometrically similar to existing ones and apply that knowl

14、edge to the practice.（三）重点与难点L重点Elementary pump theory to the dynamic pumps, pump performance curves and similarity rules.2.难点Dimensionless analysis and the application of similarity rules in pump theory.第四章（-）教学内容In this chapter, we present detailed two-dimensional performance analysis on both axia

15、l and radial cascade analyses, flow deviation angle, vane solidity, slip factors, and viscous effects. Other Flow Features, three-dimensional flow effects, radial equilibrium, prerotation and other secondary flows are presented. Also included is a section on udischarge flow managementv covering volu

16、tes, diffusers and collectors.（二）教学要求Be able to use the two- dimensional analysis to evaluate the pump performance with considering viscous effects. Student should interpret the basic physics of secondary flow phenomenon.Students also have to provide the solution to relief the undesirable flow pheno

17、menon by reasonable structure design in pumps.（三）重点与难点L重点We will address the analyses of linear cascades for axial flow machines, and the analyses of radial cascades for centrifugal machines.2.难点Analysis the three-dimensional characteristics of flows, and some of the difficulties encountered in adap

18、ting the cascade analyses of the last chapter to the complex geometry of most turbomachines. Distinguish backflow-induced swirl” and “inlet prerotation” .第五章(-)教学内容This chapter will deal with the parameters that are used to describe cavitation, and the circumstances that govern its inception and net

19、 positive suction head (NPSH), types of impeller cavitation and cavitation inception experimental results. Then we turn our attention to another of the deleterious consequences of cavitation, namely its effect upon the steady state hydraulic performance of a pump.(-)教学要求Understand physical process t

20、hat how the cavitation happens in the pump. And understand parameters on cavitation description and inception. Analysis the pump performance damage with cavitation.Students also have to provide the solution to avoid the cavitation by design or installation.(三)重点与难点1.重点The characters of the cavitatio

21、n and pump performance change due to it.2.难点Use analytical methods available for the evaluation of cavitation performance and with the thermodynamic effects of the phase change process on that performance.Zr/r 5第八早(-)教学内容In this chapter, we begin with a discussion of bubble dynamics, so that referen

22、ce can be made to some of the classic results of that analysis. This leads into a discussion of two of the deleterious effects that occur as soon as there is any cavitation, namely cavitation damage and cavitation noise.(-)教学要求Under the cavitation bubble dynamics, cavitation damage, cavitation noise

23、. Also a brief introduction will be offered to some advanced topics such as: vibration, rotating stall, rotating cavitation, surge, auto-oscillation, acoustic resonances and unsteady flow.(三)重点与难点L重点Concepts from the analyses of bubble dynamics, and relates those ideas to two of the byproducts of th

24、e phenomenon, cavitation damage and noise. Details on the process of cavitation and bubble dynamics will be addressed.2 .难点Cavitation affects not only the steady state fluid flow, but also the unsteady or dynamic response of the flow. This change in the dynamic performance leads to instabilities in the flow that do not occur in the absence of cavitation. Examples of these instabilities are “rotating cavitation” and vibrations by the appearanc