Flow-induced Vibration Design Guidelines: Presented at the Joint Conference of the Pressure Vessels and Piping, Materials, Nuclear Engineering, Solar Energy Divisions, Denver, Colorado, June 21-25, 1981
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flow can occur with very viscous fluids such as lube oil and with very small flow velocities. Laminar flow can be explained as a microscopic viscous interaction between several layers of fluid.
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Flow-induced pressures were measured on the surface of a delta wing in a flow visualization water tunnel, and at the same time the vortical flow over the wing was visualized using dye. For a free-stream velocity of 0.1 m/s used in the experiments, the pressures were small (less than 15 Pa). This is believed to be the first time that flow-induced pressures have been measured in a water tunnel ...
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Most of the current knowledge of bellows flow-induced vibrations is presented in detail in Reference 1 prepared under the current contract. This state-of-the-art of bellows vibrations was derived from experimental and . analytical studies of free bellows, and flex hose, in a size range equal to or less than 2 inches internal diameter. This effort dealt primarily with water flows and has ...
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Experiments regarding the FIM – flow-induced motion on an array of four floating cylinders with low aspect ratio, H / L = 1.5, and three different distances between column centers, or spacing ratio, S / L = 2, 3 and 4, were carried out in a towing tank; where H is the column height below the water area, L is the length of the face dimension of the columns, and S is the distance between ...
Author: Rodolfo T. Gonçalves, Nicole H. Hannes, Maria E.F. Chame, Pedro P.S.P. Lopes, Shinichiro Hirabayashi...Get Price
Flow-induced vibration of two cylinders in tandem and staggered arrangements - Volume 833 - Martin D. Griffith, David Lo Jacono, John Sheridan, Justin S. Leontini
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Flow-induced vibration of two cylinders in tandem and staggered arrangements - Volume 833 - Martin D. Griffith, David Lo Jacono, John Sheridan, Justin S. Leontini
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The flow induced vibration of pipes due to internal flowing fluid is studied and investigated. Equations were developed to express the influence of internal fluid flow on the natural frequency and displacement amplitude of vibrating pipes. The approach involved complex mechanics and geometric analysis to arrive at new and simple equations which compares favorably to experimental results. The ...
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Popescu et al. (2009 and 2011) conducted a detailed study of the flow induced acoustics in corrugated pipes. When the vortex shedding frequency excites the acoustic natural frequency of the ...
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@article{osti_6454199, title = {Control of flow-induced vibration in safety relief valves}, author = {Simmons, H.R. and Baldwin, R.M.}, abstractNote = {A vortex shedding instability is shown to couple with the acoustic resonance of a relief valve side branch. A spectral evaluation of the vortex resonance is presented as the flow variation moves the system into and out of the locked-in resonance.
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A theoretical model is presented for describing the flow-induced deformation of red blood cells. The cells are modeled as deformable liquid capsules enclosed by a membrane that is nearly incompressible and exhibits elastic response to shearing and bending deformation. In the mathematical formulation, the hydrodynamics is coupled with the membrane mechanics by means of surface equilibrium ...
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However, a critical drawback is that shear forces induced by flow lead to depletion of the lubricant. In this work, a way to overcome the shear-induced lubricant depletion by replenishing the lubricant from the flow of emulsions is presented. The addition of small amounts of positively charged surfactant reduces the charge repulsion between the ...
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A numerical model is presented that describes all aspects of flow-induced crystallization of isotactic polypropylene at high shear rates and elevated pressures. It incorporates nonlinear viscoelasticity, including viscosity change as a result of formation of oriented fibrillar crystals (shish), compressibility, and nonisothermal process ...
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Noté 0.0/5. Retrouvez Flow-Induced Vibration 2003: Presented at the 2003 Asme Pressure Vessels and Piping Conference Cleveland Ohio July 20-24 2003 et des millions de livres en stock sur Amazon.fr. Achetez neuf ou d'occasion
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In this manner, well-known theories on cylinders in cross-flow or well-executed solutions from the field of wind engineering--to name just two examples--may be useful in other systems or fields on which information is scarce. The unified approach is broad enough to permit treatment of the major excitation mechanism, yet simple enough to be of practical use.
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EXTENSIONAL-FLOW-INDUCED CRYSTALLIZATION OF POLYPROPYLENE A Thesis Presented By ERICA E. BISCHOFF WHITE Submitted to the Graduate School of the University of Massachusetts Amherst in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN MECHANICAL ENGINEERING September 2011 Mechanical and Industrial Engineering
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01/12/2017 · This lecture presents a report on the 2017 I-INCE Symposium in April 2017 at Penn State University (USA). Dr. Stephen Hambric highlights some of the work presented at the 2nd Flow Induced Noise ...
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Flow Induced Vibration, 1994 book. Read reviews from world's largest community for readers.
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Flow-induced noise due to laminar-turbulence transition process : presented at the Winter Annual Meeting of the American Society of Mechanical Engineers, San .
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In the last years, the FEA of flow induced stresses in a Francis turbine runner through CFD was done by Xiao et al. (2008); Saeed et al. (2010); Sobrinho et al. (2009); Nava et al. (2006).
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