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Author: Kevin Amith Mathias
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659341403
Category :
Languages : en
Pages : 84
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Book Description
This book mainly focuses on the understanding of basic concepts related Hydrodynamic Lubrication. In this more emphasis is given on steadily loaded oil film Journal Bearings. It includes discussion on derivation of generalised Reynold's equation for specific cases of Journal Bearing. In case of steadily loaded Journal Bearings viscosity is assumed to constant. But in reality because of rise in temperature, viscosity of oil film changes. In this book effect of variation of viscosity on the performance of Journal bearing is discussed. Plots of steady state, dynamic and thermo-hydrodynamic analysis are included in this book.
Author: Kevin Amith Mathias
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659341403
Category :
Languages : en
Pages : 84
Get Book Here
Book Description
This book mainly focuses on the understanding of basic concepts related Hydrodynamic Lubrication. In this more emphasis is given on steadily loaded oil film Journal Bearings. It includes discussion on derivation of generalised Reynold's equation for specific cases of Journal Bearing. In case of steadily loaded Journal Bearings viscosity is assumed to constant. But in reality because of rise in temperature, viscosity of oil film changes. In this book effect of variation of viscosity on the performance of Journal bearing is discussed. Plots of steady state, dynamic and thermo-hydrodynamic analysis are included in this book.
Author: J. K. Wang
Publisher: John Wiley & Sons
ISBN: 1118536347
Category : Science
Languages : en
Pages : 216
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Book Description
Thermohydrodynamic Instability in Fluid-Film Bearings aims to establish instability criteria for a rotor-bearing system associated with fluid-film journal bearings. • It focuses on how the influencing factors such as rotor flexibility, manufacturing imperfections such as residual shaft unbalance, and service-related imperfections such as uneven wear affect the stability of a rotor-bearing system • It shows how the specific operating conditions such as oil inlet temperature, inlet pressure, and inlet position of a rotor-bearing system directly influence the system stability • General design guidelines have been summarized to guide the engineering system design and the correction of failure and/or malfunction
Author: F. B. Yousif
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Dominique Bonneau
Publisher: John Wiley & Sons
ISBN: 1119008034
Category : Mathematics
Languages : en
Pages : 176
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Book Description
This Series provides the necessary elements to the development and validation of numerical prediction models for hydrodynamic bearings. This book describes the thermo-hydrodynamic and the thermo-elasto-hydrodynamic lubrication. The algorithms are methodically detailed and each section is thoroughly illustrated.
Author: Hazem Ezzat Ahmed Ezzat
Publisher:
ISBN:
Category :
Languages : en
Pages : 632
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Book Description
Author: Norman Owen Freund
Publisher:
ISBN:
Category : Bearings (Machinery)
Languages : en
Pages : 872
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Book Description
Author: Bai Shaoxian
Publisher: Academic Press
ISBN: 0128172916
Category : Technology & Engineering
Languages : en
Pages : 240
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Book Description
Gas Thermohydrodynamic Lubrication and Seals provides contemporary theory and methods for thermo-hydrodynamic lubrication analysis in the design of gas bearings and seals. The title includes information on gas state equations and gas property, derivation of gas thermohydrodynamic 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. Readers will find state-of-the-art, practical knowledge based on fifty years of research and application. - Describes thermohydrodynamic 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
Author: Kannan Govindan
Publisher: Springer Nature
ISBN: 9811627940
Category : Technology & Engineering
Languages : en
Pages : 1422
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Book Description
This book presents select papers from the International Conference on Energy, Material Sciences and Mechanical Engineering (EMSME) - 2020. The book covers the three core areas of energy, material sciences and mechanical engineering. The topics covered include non-conventional energy resources, energy harvesting, polymers, composites, 2D materials, systems engineering, materials engineering, micro-machining, renewable energy, industrial engineering and additive manufacturing. This book will be useful to researchers and professionals working in the areas of mechanical and industrial engineering, materials applications, and energy technology.
Author: Srinivas Dhulipala
Publisher:
ISBN:
Category : Finite element method
Languages : en
Pages : 208
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
A three-dimensional finite element thermo-hydrodynamic lubrication model that couples the Reynolds and energy equations is developed. The model uses the streamline upwind Petrov-Galerkin (SUPG) method. Model results indicate that the peak temperature location in slider bearing is on the mid-plane well as when pressure boundary conditions are altered in such a way that the inlet/outlet pressure is higher than the side pressure. The adiabatic temperature profiles of an infinite and square sliders are compared. The wider slider shows a higher peak temperature. Side flow plays a major role in determining the value and position of the peak temperature. Model results also indicate peak side flow at a width-to-length ratio of 2. A method of optimizing leakage, the Flow Gradient Method, is proposed. The SUPG finite element method shows rapid convergence for slider and plain journal bearings and requires no special treatment for backflow in slider bearings or special boundary conditions for heat transfer in the rupture zone of journal bearings. A template for modeling thermo-hydrodynamic lubrication in journal bearings is presented. The model is validated using experimental and analytical data in the literature. Maximum deviation from measured temperatures is shown to be within 40 per cent. The model needs no special treatment of boundary conditions in the rupture zone and shows rapid and robust convergence which makes it quite suitable for use in design optimization models and in obtaining closed relations for critical parameters in the design of journal and slider bearings. Empirically derived simulation models for temperature increase; leakage; and power loss are proposed and validated using the developed finite element model and experimental results from literature. Predictions of temperature increase, leakage, and power loss are better than those obtained for available relations in the literature. The derived simulation models include five important design variables nam.
