Flow-Induced Structural Vibrations
Symposium Karlsruhe (Germany) August 14-16, 1972
Published on 23. August 1974
Book
Hardback
XX, 775 pages
978-3-540-06317-9 (ISBN)
Description
In recent years there has been an unmistakable tendency for research in the fields of hydraulics and fluid mechanics to involve ever more sophisticated study of increasingly detailed aspects of problems, while in the process becoming further and further detached from the reali ties faced by practising engineers. At the same time, too many hy draulic engineers have continued to conduct model studies with the goal of obtaining ad-hoc solutions for specific problems, while direct ing little if any of their attention toward elucidation of the underlying mechanics and toward generalization of their results for future appli cation. It was against this background that the International Union of Theoretical and Applied Mechanics (IUTAM) and the International As sociation for Hydraulic Research (IAHR) were approached and asked to cosponsor the Symposium on Flow-Induced Structural Vibrations, which would have as its objective the promotion of interaction between the active researchers and the practitioners, and of communication between the different disciplines concerned. To this end, invitations were extended to individuals who together represented the full range of the investigation-application spectrum, and contributions were so licited from scientists and engineers who, in general, approach vi bration problems along different avenues. In soliciting contributions to the Symposium it was emphasized that priority would be given to IV Preface papers which shed light on the constituent phenomena involved in vi bration problems and thereby enhance our understanding of the basic vibration-inducing mechanisms.
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Content
Technical Session A "Generation of Oscillatory Flows" Monday, August 14, 1972, Morning.- Generation of Oscillatory Flows (General Lecture).- Instability of a Vertical Water-Curtain Closing an Air-Chamber.- Theoretical Study of Nappe Oscillation.- On the Response of Separated Pockets to Modulations of the Free Stream.- Flapping Jets.- Oscillations of a Jet in a Rotating Fluid.- Periodicity in Annular Diffusor Flow.- On a Global Hydraulic Instability in the Vessel of a Pressurized-Water Reactor.- Technical Session B "Mathematical Models of Flow-Induced Vibrations" Monday, August 14, 1972, Afternoon.- Mathematical Models of Flow-Induced Vibrations of Bluff Bodies (General Lecture).- The Response of Circular Cylinders to Vortex Shedding.- Wake Swing and Vortex Shedding in a Cross Flow Past a Single Circular Cylinder.- On the Prediction of Flutter Forces.- The Low Frequency Components of Separated Flows.- A Theory for Fluctuating Pressures on Bluff Bodies in Turbulent Flows.- Hydrodynamic Effect of Turbulent Flow on Flow Boundaries.- Technical Session C "Flow-Induced Vibrations of Hydraulic Structures" Tuesday, August 15, 1972, Morning.- Field Experiences with Hydraulic Structures (General Lecture).- On Flow-Induced Structural Oscillations.- Experimental Investigations of Self-Excited Vibrations of Vertical-Lift Gates.- On Self-Excited Oscillations of Gate Seals.- Field Investigations of Dam and Gate Vibrations.- Vibrations Induced by Von Kármán Vortex Trail in Guide Vane Bends.- On the Hydroelastic Vibration of a Swing Check Valve.- Technical Session D "Flow-Induced Vibrations of Beams and Bridge-Decks" Tuesday, August 15, 1972, Morning.- Flutter and Aerodynamic Response Considerations for Bluff Objects in a Smooth Flow.- Quasi-Steady Analysis of Torsional Aeroelastic Oscillators.- The Use of Taut Strip Models in the Prediction of the Response of Long Span Bridges to Turbulent Wind.- The Effect of Twist Motion on the Dynamic Multimode Response of a Building.- On Aerodynamic Responses of Truss-Stiffened Bridge Sections in Fluctuating Wind Flows.- Torsional Stability of H-Sections in Random Vertical Gusts.- Technical Session E "Flow-Induced Vibrations of Bluff Bodies" Tuesday, August 15, 1972, Afternoon.- Unsteady Aerodynamics of Wings and Blades (General Lecture).- Unsteady Pressure Distributions Due to Vortex-Induced Vibration of a Triangular Cylinder.- Unsteady Pressures and Forces Acting on an Oscillating Circular Cylinder in Transverse Flow.- Effects of Synchronized Cylinder Vibration on Vortex Formation and Mean Flow.- On the Correlation of Dynamic Pressures on the Surface of a Prismatic Bluff Body.- Criteria for Flow-Induced Oscillations of a Cantilevered Cylinder in Water.- Hydroelasticity Study of a Circular Cylinder in a Water Stream.- Correlations between Forces, Flow Field Features, and Confinement for Bluff Cylinders.- Panel Discussion "Research Priorities in Flow-Induced Vibrations" Wednesday, August 16, 1972.- New Theoretical and Experimental Approaches.- Air and Water Craft.- Buildings, Towers, and Bridges.- Hydraulic Structures and Machinery.- Marine Structures.- Technical Session F "Flow-Induced Vibrations of Marine Structures" Wednesday, August 16, 1972, Morning.- Ocean Wave Spectra, Eddies, and Structural Response (General Lecture).- Some Aspects of the Oscillations of Full-Scale Piles.- Vibrations in Mooring Lines from Ocean Waves.- Oscillations of Buoy-Cable Mooring Systems.- An External Hydroelastic Problem of Two Circular Cylindric Supports.- Flow-Induced Vibrations of Two Cylinders in Tandem, and their Suppression.- Hydrofoil Flutter: Some Recent Developments.- Technical Session G "Flow-Induced Vibrations of Shells and Pipes" Wednesday, August 16, 1972, Morning.- On the Mechanism of Wind-Excited Ovalling Vibrations of Thin Circular Cylindrical Shells.- Vibrations of Continuous Pipes Conveying Fluid.- Stability of Tubular Cylinders Conveying Fluid.- Hydroelastic Behaviour of a Cylindrical Shell.- Two-Phase Flow by Induced Random Vibrations.- Technical Session H "Flow-Induced Vibrations Relating to Buildings" Wednesday, August 16, 1972, Afternoon.- Turbulence-Induced Vibrations of Bluff Bodies.- Vortex Shedding from a Bluff Body in a Shear Flow.- Vortex Generation on Cylindrical Buildings and its Simulation in Wind Tunnels.- Pressures and Forces on a Circular Cylinder in a Cross Flow at High Reynolds Numbers.- Dynamic Lift on a Cylinder in High Reynolds Number Flow.- Wake Galloping, an Aeroelastic Instability.- Galloping Oscillations of Prisms in Smooth and Turbulent Flows.