Download - ROTATING MACHINERY Dynamics - GBV
ROTATING MACHINERY Dynamics Proceedings of the Third International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC-3)
Edited by
J. H. Kim Electric Power Research Institute Palo Alto, California
W.-J. Yang University of Michigan Ann Arbor, Michigan
OHEMISPHERE PUBLISHING CORPORATION A member of the Taylor & Francis Group
Washington Philadelphia London
Contents
Preface xi
ISROMAC-3 Committees xiii
ROTORS, DISCS, A N D SHAFTS
Rotordynamic Software S. H. Crandall 3
Flexural Vibrations of Rotors Immersed in Dense Fluids: Part I—Theory F. Axisa and J. Antunes 23
Flexural Vibrations of Rotors Immersed in Dense Fluids: Part II —Experiments
J. Antunes, F. Axisa, and F. Hareux 39
Blade Loss Dynamics of a Magnetically Supported Rotor F. Viggiano and G. Schweitzer 53
Nonlinear Mechanism of Bistable Response of a Flexible Rotor Supported in Squeeze Film Dampers
G. Meng 69
The Influence of the Rotational Speed on the Transverse Vibrations of Rotating Discs
W. Seemann 79
Effects of Changing Structure Factors on Torsional Performance of Shaft Systems
J. H. Yang and Q. J. Meng 95
Laboratory and Theoretical Investigations of the Vibrational Behaviour of a Uniform Rotor wi th a Transverse Crack
B. Schmalhorst 105
Whirl of Turborotors at High Loads A. D. Dimarogonas 121
v
SEALS
Dynamic Characteristics of Noncontacting Seal and Evaluation of Its Effect on Stability of Rotor System
T. Iwatsubo 139
Flow Visualization in a Single Simulated Brush Seal M. J. Braun, R. C. Hendricks, V. A. Canacci, and M. Kazmierchak 161
Rotordynamic Coefficients for Stepped Annular Gas Seals C. C. Nelson, M. S. Dünn, and J. K. Scharrer 177
A Three Volume Bulk Flow Model for the Calculation of Rotordynamic Coefficients of Look-Through Labyrinths
R. Nordmann and P. Weiser 191
Rotordynamic Coefficients for Turbulent Annular Misaligned Seals F. Simon and J. Frene 207
BEARINGS
An Analytical Investigation of a Cryogenic Journal Bearing M. J. Braun and F. K. Choy 225
Determination of Bearing Dynamic Coefficients from Unbalance Response in Flexible Rotor-Bearing Systems
S.-W. Hong and C.-W. Lee 239
Electromagnetic Bearings, a Reasonable Element in Turbomachinery? R. Siegwart and R. Truninger 253
An Improvement on the Estimation of the Linear Dynamic Coefficients of Oil-Film Journal Bearing Considering Nonlinear Effect by Parameter Identification in the Frequency-Domain
R. H. Zhu, C. S. Chang, and X. K. Tang 269
Dynamic Characteristics of an Overhung P/A Fan in Rolling Element and Fluid Film Bearings
E. J. Gunter, A. Hobbs, and C. Phelps 279
Component Test Results from the Bearing Life Improvement Program for the Space Shuttle Main Engine Oxidizer Turbopumps
J. E. Keba 303
A Theoretical Calculation of the Pressure and Flow Field of Fluid Film Bearing Under Eccentric Large Whirl Orbit
C.-S. Chang and H.-F. Cheng 319
vi
DIAGNOSTICS A N D MEASUREMENTS
Analysis of the Dynamic Behavior of Rotating Machines by Direct Measurement of Air Gap Variations
R Talas and R O. Toom 331
Vibration Protection of Aeration Turbine Gear Motor S. Gajin, S. Kuzmanovic, and G. Varju 349
STABILITY
A Simple Procedure for Assessing Rotor Stability K. E. Atkins, R. X. Perez, and D. M. Turner 361
A Method to Locate the Source of a Rotor Fluid-Induced Instability Along the Rotor
D. E. Bent/y and R. F. Bosmans 377
Stability Behaviour of a Three Journal Bearing Rotor System Excited by a Lateral Force
K. Kwanka 387
The Role of Flow-Related Tangential Forces in Rotor/Bearing/Seal System Stability
A. Muszynska 401
Nonlinear Interactions Between Resonance and Instability in a Symmetrie Rotor
S. W. Shaw and J. Shaw 419
Stability of Rotating Cylindrical Shells Including Nonlinear Stiffening P Rüge and Th. Plonski 435
EFFECTS OF FLOW- INDUCED FORCES
Aeroelastic Analysis of Vertical Axis Wind Turbines A. F. A. A. El-Sayed 447
Stochastic Aerodynamic Model for Studying Darrieus Rotor in Turbulent Wind
M. T. Brahimi and I. Paraschivoiu 463
Analytical and Experimental Study of the Hydrodynamic Unbalance of Single-Vane Impellers
H. E. Siekmann and M. Stark 479
VII
Off-Design Behavior of Two Pump-Turbine Model Impellers wi th Similar Geometry but Different Blade Curvature
H. Stepanik and H. Brekke 497
An Experimental Study of Fluid Forces on a Centrifugal Impeller Rotating and Whirling in a Volute Casing
Y. Yoshida and Y. Tsujimoto 513
Periodic Radial Forces Acting on Screw Centrifugal Pump K. Tanaka, M. Arai, and S. Ikeo 527
CONTROL A N D DESIGN
Active Chamber System for Vibration Control of Rotating Machinery J. Althaus and H. U/brich 543
A Magnetic Bearing Control Scheme for Cancelling Submerged Rotor Vibratory Forces
H. M. Chen and P. Lewis 559
Optimal Location of Forces Controlling Vibration of Flexible Rotors Z Gosiewski and T. Bil 571
An Adaptive Control Method of Flexible Rotor Vibration Z Gosiewski and D. Janecki 587
The Use of Piezoelectric Actuators for Active Vibration Suppression in Rotating Machinery
A. F. Kascak, A. B. Palazzolo, R. R. Lin, and G. Montague 605
Development of Sealing Line Calculation in Twin Screw Compressor L Zhang and J. F. Hamilton 623
Computer System for Multi-Bearing Rotor Design Z A. Parszewski and K. Krynicki 639
GENERAL TOPICS
Electrostatic Charge Build-up in Lubricating Channels of Turbomachinery J. Seyed-Yagoobi, R. D. Gross, andA. B. Palazzolo 653
Free Vibration Analysis of a Rotating Workpiece During Machining R. P. S. Han and J. W. Z Zu 661
Equations of Motion of a Flexible Rotor wi th Axially Loose Disc M. Riemer 675
viii
The Use of Beam-Like Model Data for Stiffness Profile Estimation by the EBS Method: Part 2—Completion and Benchmarking
T. A. Vest and M. S. Darlow 693
Simulation Research on the Dynamic Characteristics of a Steam-Injected Gas Turbine
K.-J. Mao andX.-W. Dai 705
Application of SVD Algorithm to Influence Coefficient Balancing Computation of Flexible Rotors
J. M. Yang 719
On the Asymmetrie Vibration of Point-Supported Circular Plates S. Azimi 729
Author Index 735
Subject Index 737
IX