Hydraulic Turbine Theory and Design

Author: Yang Ce/Shi Xin
Publisher:
Publish Date: 2004-10-01
Features: The theory and design methods of radial-inflow turbomachinery are an important branch of the turbomachinery discipline. This book concisely and systematically presents the theory and design methods of radial-inflow turbomachinery, especially the latest research achievements in these areas in recent years. The book is divided into 10 chapters. Chapter 1 introduces practical applications of radial-inflow turbomachinery, aiming to give readers a comprehensive understanding of the uses of radial-inflow turbomachinery at the beginning of their reading. Chapter 2 discusses the multidimensional gas dynamics equations of turbomachinery. Since turbulence models play a very important role in the theoretical research of turbomachinery, this chapter also provides various turbulence models widely used in the calculation of internal flow fields in turbomachinery. Over the past few decades, the matching research between impellers and diffusers has been a hot topic in the theoretical research of centrifugal compressors. Therefore, Chapter 3 is dedicated to introducing the matching issues between impellers and diffusers in centrifugal compressors. Chapter 4 covers the mechanism of leakage flow at the blade tip clearance in turbomachinery. Considering that the causes of blade tip clearance leakage flow in axial-inflow turbomachinery and radial-inflow turbomachinery are the same, the content of this chapter is not limited to the leakage flow at the blade tip clearance of radial-inflow turbomachinery. Chapter 5 focuses on the preliminary design and analysis of centrifugal compressors, with an emphasis on the principles for determining the inlet and outlet dimensions and flow parameters of centrifugal compressor impellers. Chapter 6 covers the preliminary design and analysis of radial-inflow turbines, with a focus on the principles for determining the geometric dimensions and some aerodynamic parameters at the inlet and outlet of radial-inflow turbines. Chapters 7 and 8 are respectively about the performance prediction methods of centrifugal compressors and radial-inflow turbines. Chapter 8 proposes a turbine performance prediction method that combines quasi-three-dimensional flow analysis. Chapter 9 discusses the blade shaping methods for turbomachinery. Since the blade shaping methods for compressors and turbines are the same, this chapter introduces the blade shaping methods for centrifugal compressors as an example. Considering that computational fluid dynamics (CFD) is increasingly becoming an important tool for the development of turbomachinery, Chapter 10 introduces the application of modern computational fluid dynamics in the calculation of internal flow fields in turbomachinery. This book is intended for all researchers studying the theory and design methods of turbomachinery and can also serve as a reference for senior undergraduate and graduate students in the fields of power machinery and engineering.