Modeling and Control Strategies for Mechanical Gas Face Seals PDF Download
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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: 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: 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: 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: Wade H. Shafer
Publisher: Springer Science & Business Media
ISBN: 1461305993
Category : Science
Languages : en
Pages : 411
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Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 32 (thesis year 1987) a total of 12,483 theses titles from 22 Canadian and 176 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 32 reports theses submitted in 1987, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Author: Sudhir B. Railkar
Publisher:
ISBN:
Category : Sealing (Technology)
Languages : en
Pages : 156
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Book Description
Abstract.
Author: Bo Ruan
Publisher:
ISBN:
Category : Equations of motion
Languages : en
Pages : 286
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Book Description
Author: Gerard Insolia
Publisher:
ISBN:
Category : Sealing (Technology)
Languages : en
Pages : 410
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Book Description
Author: Sivaramakrishnan Srinivasan
Publisher:
ISBN:
Category : Sealing (Technology)
Languages : en
Pages : 104
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Book Description
"A parametric investigation has been performed to study the effects of variations in design parameters and operating conditions on the dynamic tracking abilities of spiral grooved gas face seals. This analysis is limited to a mechanical seal in a flexibly mounted stator configuration."--Abstract, p. iv.
Author: Abdelwahab Aroussi
Publisher: Elsevier
ISBN: 0444594965
Category : Business & Economics
Languages : en
Pages : 435
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Book Description
Proceedings of the 3rd International Gas ProcessingSymposium; CopyrightPage; List of Contents; Preface; International Technical Committee Members (Reviewers); Exercising the Option of CO2 Slippage to Mitigate Acid Gas Flaring During SRU Expansion Bellow Failure; Abstract; 1. Introduction; 2. Methodology to minimize Acid Gas Flaring; 3. Conclusion; Flare Reduction Options and Simulation for the Qatari Oil and Gas Industry; Abstract; 1. Introduction; 2. Ethylene process overview; 3. Flare Reduction -- Industrial Case Study; 4. Result and discussion; 5. Conclusions; 6. Acknowledgment7. ReferencesReview of Cooling Water Discharge Simulation Models; Abstract; 1. Introduction; 2. Model Comparison; 3. Conclusions; References; Combining post-combustion CO2 capture with CO2 utilization; Abstract; 1. Introduction; 2. Carbon capture; 3. Carbon dioxide disposal and utilization; 4. Conclusions; References; Step Change Adsorbents and Processes for CO2 Capture "STEPCAP; Abstract; 1. Introduction; 2. ...
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 1518
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Book Description
