Results 231 to 240 of about 6,504,090 (283)
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1984
A central goal in the thermal design of tubular heat exchangers is to utilize the available shellside pressure loss to maximize the shellside film coefficient. The most effective means of accomplishing this objective is to arrange the shellside fluid to flow across the tube bank. Single segmental baffles (Fig.
Krishna P. Singh, Alan I. Soler
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A central goal in the thermal design of tubular heat exchangers is to utilize the available shellside pressure loss to maximize the shellside film coefficient. The most effective means of accomplishing this objective is to arrange the shellside fluid to flow across the tube bank. Single segmental baffles (Fig.
Krishna P. Singh, Alan I. Soler
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Active Control Of Flow-induced Vibration
Journal of Sound and Vibration, 1993Abstract The active control of flow-induced oscillations, specifically, vortex-induced oscillations of circular cylinders and galloping oscillations of circular cylinders and galloping oscillations of a square prism, are considered. In the case of vortex-induced oscillations, the vibrating cylinder is modeled as a single-degree-of-freedom (sdof ...
Venkatraman, K., Narayanan, S.
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Flow induced vibration of thermowells
ISA Transactions, 1999Abstract Traditional thermowell selection methods based on velocity rating tables are no longer a match for the demands of modern processes, and a new approach, involving dynamic analysis methods, is needed. Starting with the simplest possible thermowell, a uniform cantilever subjected to a combination of vortex shedding and drag forces, the dynamic ...
David S Bartran +3 more
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Flow-Induced Vibrations in Bellows
Journal of Pressure Vessel Technology, 1989Abstract Flow-induced vibrations have caused fatigue failures in a number of bellows units carrying cooling water flows. The bellows are made from Inconel 600 and have a nominal inside diameter of 20 mm. This paper presents the results of a project undertaken to study these vibrations and to develop a method for vibration alleviation ...
D. S. Weaver, P. Ainsworth
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Multiphase Flow Induced Vibrations at High Pressure
Volume 4: Fluid-Structure Interaction, 2020Abstract High pressure experiments were done to determine the pressure effect on multiphase induced forces. To that end, a series of water/gas, oil/gas and oil/water/gas vibrations measurements were performed at 10, 25, 45 and 80 bar at different liquid and gas rates in a horizontal, 2″, double Uloop test section installed at the Equinor
Belfroid, S.P.C. +3 more
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Flow-induced vibrations and the Landau equation
Journal of Fluids and Structures, 2013Abstract The initial and general transient temporal behaviours of flow induced vibrations were studied particularly with regard to the extent with which self-excited, flow-induced vibrations can be described by the Landau equation. Three different cases are studied experimentally, using bodies with generic shape.
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The Flow-Induced Vibration of Cylinders in a Cross Flow
5th International Symposium on Fluid Structure Interaction, Aeroelasticity, and Flow Induced Vibration and Noise, 2002Flow-induced vibrations occur in general heat exchangers and nuclear reactors. They cause the tube failures through fretting wear or fatigue. Fluid elastic instability may lead to vibration amplitudes large enough to cause tube-to-tube clashing and in such cases will lead to relatively rapid failures.
W. Takano +4 more
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Flow-Induced Structural Vibrations
Journal of the Engineering Mechanics Division, 1965The problem of flow-induced structural vibration is characterized mainly by interdependence of structural deformation and fluid-dynamic loading. The analytical and physical nature of this problem, designated as fluidelasticity, is examined and exemplified, thereby developing a framework useful in unifying an otherwise heterogeneous group of vibration ...
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Flow-Induced Vibration of Anisotropic Cylindrical Shells
5th International Symposium on Fluid Structure Interaction, Aeroelasticity, and Flow Induced Vibration and Noise, 2002This paper deals with the vibration analysis of anisotropic laminated cylindrical shells conveying fluid. We focus on the axi-symmetric (n=0) and lateral (beam-like, n=1) vibration modes of the anisotropic cylindrical shells. Particularly important in this study is to obtain the natural frequencies of the fluid-structure coupled system and also to ...
M. H. Toorani, A. A. Lakis
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Flow-induced Vibration and Instability of Carbon Nanotubes
2005 International Conference on MEMS,NANO and Smart Systems, 2006This article deals with the effects of internal moving fluid on free vibration and structural instability of carbon nanotube (CNT) conveying fluid. CNT conveying fluid is an elastic hollow tube conveying fluid of mass density M and mean flow velocity V and it does not study how the wall-fluid interaction and the viscosity of fluid affect the mean flow ...
J. Yoon +2 more
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