Gas Thermo-hydrodynamic Lubrication and Seals - 1st Edition - ISBN: 9780128167168

Gas Thermo-hydrodynamic Lubrication and Seals

1st Edition

Authors: Bai Shaoxian Wen Shizhu
Paperback ISBN: 9780128167168
Imprint: Academic Press
Published Date: 1st July 2019
Page Count: 260
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Description

Gas bearing and seal design is based on the theory of gas lubrication. Isothermal gas lubrication theory has been applied to gas bearings and seals since the 1970s. However, the increasing operational speed, pressure and temperature of modern machinery has caused thermal hydrodynamic lubrication problems, accompanied by surface distortion. Load capability can be reduced as a result of these problems, leading to the failure of gas bearings and seals. In view of these developments, Thermo-hydrodynamic Lubrication and Seals provides contemporary theory and method for thermo-hydrodynamic lubrication analysis for the design of gas bearings and seals. The book describes gas-thermo hydrodynamic lubrication theory and design methods of a gas face seal. The title includes information on gas state equations and gas property, derivation of gas thermo-hydrodynamic lubrication equations, the theory of isothermal gas lubrication, thermal gas lubrication of rigid surfaces, gas thermoelastic hydrodynamic lubrication of face seals, vapor-condensed gas lubrication of face seals, experimental methods, and the design of gas face seals. The title provides state-of-the-art practical knowledge based on fifty years of research and application.

Key Features

  • Describes thermo-hydrodynamic lubrication analysis for the design of gas bearings and seals
  • Considers the increased operational speed, pressure and temperature of mechanical equipment in relation to gas bearings and seals
  • Describes multi-field coupled gas lubrication theory and analytical methods
  • Provides a model and detailed data on the lubricating properties of typical gas bearings and seals
  • Gives comprehensive coverage of the field based on a half-century of research and application

Readership

Specialists in the design of gas bearings and seals in precision mechanical and electrical and chemical equipment; researchers and postgraduate students in mechanical engineering, tribology, lubrication engineering, chemical engineering, and related fields

Table of Contents

Chapter 1 Properties of gases
1-1 Gas State Equations
1-2 Gas viscosity
1-3 Humidity gas References

Chapter 2 Gas Lubrication Equations
2-1 Reynolds Equation
2-2 EnergyEquation
2-3 Heat Conduction Equation and Interface Equation
2-4 Numerical Method for Lubrication Analysis References

Chapter 3 Isothermal Gas Lubrication
3-1 Sliders
3-2 Journal Bearing and Radial Seal
3-3 Spiral Groove Thrust Bearing
3-4 Spiral Groove Face Seal References

Chapter 4 Thermal Gas Lubrication of Rigid Surfaces
4-1 Sliders
4-2 Journal Bearing and Radial Seal
4-3 Spiral Groove Thrust Bearing
4-4 Spiral Groove Face Seal References

Chapter 5 Gas ThermoElastic Hydrodynamic Lubrication(TEHL) of Face Seals
5-1 Fundamental Equations
5-2 Choked Fluid Effect
5-3 Characteristics of Thermoelastic Distortions of Seal Faces
5-3 Characteristics of Gas TEHL References

Chapter 6 Transient ThermoElastic Hydrodynamic Gas Lubrication of Face Seals
6-1 Fundamental Equations
6-2 Dynamic Characteristics of Isothermal Gas Lubrication
6-3 Dynamic Characteristics of Thermal Gas Lubrication of Rigid Surfaces
6-4 Dynamic Characteristics of Gas TEHL References

Chapter 7 Vapor-Condensed Gas Lubrication of Face Seals
7-1 Fundamental Equations
7-2 Characteristics of Vapor Condensation in Gas Lubrication Film
7-3 Laws of Vapor Condensation in Gas Lubrication Film
7-4 Movement of Liquid Drops on Gas Lubrication Surfaces References

Chapter 8 Surface Grooves of Gas Face Seals and Testing Technology
8-1 Surface Grooves of Gas Face Seals
8-2 Testing Technology of Gas Face Seals
8-3 Experimental Characteristics of Gas Face Seals References

Chapter 9 Design of Gas Face Seals
9-1 Force Analysis of Gas Face Seals
9-2 Geometric Parameters of Gas Face Seals
9-3 Performance Parameters of Gas Face Seals
9-4 Materials of Seal Couple
9-5 Dimension Design of Seal Rings
9-6 Design of Secondary Seals
9-7Process of Seal Design and Illustration References

Details

No. of pages:
260
Language:
English
Copyright:
© Academic Press 2019
Published:
Imprint:
Academic Press
Paperback ISBN:
9780128167168

About the Author

Bai Shaoxian

Bai Shaoxian is a professor at Zhejiang University of Technology in China. He received a PhD in mechanical engineering from South China University of Technology, and has over 10 years’ experience in fluid lubrication and sealing technology, particularly the theory of gas thermohydrodynamic lubrication. His research focusses on thermohydrodynamic lubrication, and the design of mechanical seals.

Affiliations and Expertise

Professor, Zhejiang University of Technology, China

Wen Shizhu

Wen Shizhu is a professor at Tsinghua University in China. He is a member of the Chinese Academy of Science, and Honorary Director of the State Key Laboratory of Tribology. He has researched tribology for 50 years, focussing on the theory of elastohydrodynamic and thin film lubrication, the mechanisms and control of friction and wear, nano-tribology, and micro-machine design.

Affiliations and Expertise

Professor, Tsinghua University, China

Ratings and Reviews