Mathematical Model for the Design of Mechanical Face Seals PDF Download
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Author: Sudhir B. Railkar
Publisher:
ISBN:
Category : Sealing (Technology)
Languages : en
Pages : 156
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Book Description
Abstract.
Author: Sudhir B. Railkar
Publisher:
ISBN:
Category : Sealing (Technology)
Languages : en
Pages : 156
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Book Description
Abstract.
Author: Alan O. Lebeck
Publisher: John Wiley & Sons
ISBN: 9780471515333
Category : Technology & Engineering
Languages : en
Pages : 804
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Book Description
Examines the fundamentals and practice of both the design and operation of face seals, ranging from washing machines to rocket engine turbopumps. Topics include materials, tribology, heat transfer and solid mechanics. A variety of simple and complex models are proposed and evaluated and specific problems such as heat checking, blistering and instability are considered. Offers 64 tables and 364 references plus useful recommendations regarding the future of seal design.
Author: Susan R. Harp
Publisher:
ISBN:
Category : Sealing (Technology)
Languages : en
Pages : 196
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Book Description
Author: Haojiong Zhang
Publisher:
ISBN: 9780549017233
Category : Gas masks
Languages : en
Pages : 157
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Book Description
The existing methods to study mechanical gas face seals are computationally intensive or have limitations due to linearized description of the gas film coefficients. This dissertation develops modeling, estimation and control methods for mechanical gas face seal systems that overcome the disadvantages of the existing methods. In Paper I, an approach based on Proper Orthogonal Decomposition and Galerkin projection is presented for developing low-order nonlinear models of the gas film pressure in mechanical gas face seals. In Paper II, a method using reduced-order Kalman filters is developed to estimate the thin gas film axial force and moments in real-time. In Paper III, a control methodology that utilizes a robust Model Reference Adaptive Control technique is presented to regulate the dynamic behavior of mechanical gas face seal systems. The modeling, estimation and control methods developed in Papers I, II and III, respectively, are applied to a coned mechanical gas face seal in a flexibly mounted stator configuration without rotor runout or initial stator misalignment. The reduced-order gas film models are shown to be computationally efficient and valid within a wide range of operating conditions. The estimators are shown to approximate the gas film axial force and moments successfully for different forcing functions over a wide range of compressibility numbers. The controllers are able to stabilize the axial clearance and tilts effectively. The control methodology developed in Paper III is applied in Paper IV to regulate the dynamic behavior of a similar seal with rotor runout and initial stator misalignment. Simulation results show that the controllers effectively stabilize the axial clearance and control the tilts to track reference model outputs.
Author: Gerard Insolia
Publisher:
ISBN:
Category : Sealing (Technology)
Languages : en
Pages : 410
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Author: Sachin Sham Yelma
Publisher:
ISBN:
Category : Sealing (Technology)
Languages : en
Pages : 178
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Book Description
"A new analytical approach is presented for designing controllers to regulate the axial clearance of a coned face flexibily mounted stator (FMS) mechanical gas face seal."--Abstract, leaf iv.
Author: John Zuk
Publisher:
ISBN:
Category :
Languages : en
Pages : 36
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Book Description
Author: N. T. Sides
Publisher:
ISBN:
Category :
Languages : en
Pages : 23
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Book Description
A literature survey was conducted to review and evaluate the state of the art in mechanical face seal technology. The survey is part of a study to develop the capability of designing improved seals for Navy use. Sixty-eight references are cited and discussed. The report is subdivided into several sections, each embracing a general physical aspect of face seal operation. The difficulties in modeling seal performance are emphasized. Indeed, it is remarkable and encouraging that several of the models developed do predict face seal performance with some degree of accuracy.
Author: D. Berthe
Publisher: Elsevier
ISBN: 0080875785
Category : Technology & Engineering
Languages : en
Pages : 535
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Book Description
On previous occasions each Symposium has focused attention on a current and significant research topic, usually reflecting the interests of the Leeds or Lyon research groups, however this time the main focus was on the vitally important subject of technology transfer, providing the 154 delegates from 21 countries with the rare opportunity to discuss the impact of their studies on machine design.
Author: Lawrence P. Ludwig
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Book Description
