Showing papers in "Journal of Fluids and Structures in 1994"

TL;DR: In this article, the authors proposed an analytical model for a TLD using a rectangular tank filled with shallow liquid, which was experimentally verified to predict liquid sloshing in the TLD with satisfactory accuracy.

TL;DR: In this paper, the effects of the distances between two plates on the flow structure were investigated for oscillations in-phase and in counter-phase, and it was shown that the normal flow in the downstream direction was greatly affected by the distance between the two plates, but that such flow was scarcely affected for inphase oscillation.

TL;DR: In this paper, an extensive flow visualization study under controlled excitation level and frequency was performed to investigate the coupling of a shear layer with the sound field of a resonant side-branch.

TL;DR: In this article, the formation of the streamwise vortices in the wake is discussed and it is emphasized that the stretching effect in the saddle region formed by the spanwise Vortices plays a major role in the development of the streams.

TL;DR: In this article, the Navier-Stokes equation for flow around a fixed-cylinder is numerically solved for Reynolds numbers up to 250, and the static rotational stability of the cylinder is analyzed by considering moments around the fixed cylinder at different angles to the flow.

TL;DR: In this paper, a numerical solution of vortex-excited oscillations of a circular cylinder is described, at Reynolds numbers below 130, where the wake behind the cylinder is fully laminar.

TL;DR: In this article, a random vibration theory for the prediction of motion of clustered cylinders subjected to axial flow is presented, where the response is assumed to stem from both mean flow effects and random pressure fluctuations in the turbulent boundary layer, the latter being required as an input to the analytical model.

TL;DR: In this paper, the authors applied the NARMAX model to a number of fluid loading data sets in order to establish if there exists a simple extension of Morison's equation which will predict forces with improved accuracy.

TL;DR: In this article, a zonal method for the computation of unsteady, viscous, separated flows over airfoils is presented, where the flowfield is divided into a viscous inner zone, where higher grid resolution may be used, and an inviscid outer zone.

TL;DR: In this article, the authors measured the base pressure on rectangular cylinders with different side ratios, d/h = 0·4-0·6, where d is the depth and h is the height.

TL;DR: In this paper, the interaction of vortex shedding and forced cylinder motion is examined, in particular the occurrence of the lock-in phenomenon, leading to the postulation of three regimes for antisymmetric vortex shedding, which are discussed in some detail for exemplary cases.

TL;DR: In this paper, a nonlinear quasi-steady model for the analysis of the dynamics of a loosely supported cylinder, which takes into account position-dependent nonlinear fluid forces as well as nonuniform flow, is formulated.

TL;DR: In this paper, a physically based description of the lateral internal forces in a vertical cantilevered pipe conveying an incompressible fluid is provided for the study of the bending oscillations of the pipe.

TL;DR: In this article, the internal cross-sectional area of collapsible tubes undergoing self-excited oscillation is investigated as a function of both time and streamwise position, and numerical predictions are made using a nonlinear one-dimensional model which incorporates longitudinal wall-tension effects and dissipation due to flow separation.

TL;DR: In this article, the authors investigated the structure of the vortex excitation of a circular cylinder induced by another set downstream in a cruciform arrangement with a gap smaller than half the cylinder diameter and showed that the shedding frequencies of these two kinds of vortices differ by a factor of around 2.

TL;DR: In this article, the vibration characteristics of cylinder clusters in turbulent axial flow are studied experimentally, and the measurements are compared predictions by the theoretical model in Part I of this study.

TL;DR: In this article, a mixed Eulerian-Lagrangian scheme (Vortex-In-Cell Method) is used in combination with the Operator Splitting Technique to solve Navier-Stokes equations around arbitrary cross-sections in the laminar flow regime.

TL;DR: In this article, the largest Lyapunov exponents for a complex system with fluid and an excitation arrangement were determined for four steady-state regimes: stationary, periodic, almost-periodic and chaotic.

TL;DR: In this article, the acoustic radiation damping for various plates and semi-infinite strips subjected to a uniform, subsonic and steady flow has been predicted based on the linear vibration of a flat plate.

TL;DR: In this article, a complete second-order solution for the wave field produced by the bichromatic harmonic motion of a generic planar wavemaker in a semi-infinite two-dimensional channel is presented.

TL;DR: In this paper, a time-integration method based on a three-time-level implicit semi-discretization was proposed for solving the time-dependent incompressible Navier-Stokes equations.

TL;DR: In this article, the dynamic response of a loosely supported cylinder, unstable in its first TSP-inactive mode (i.e., when no support is provided by the Tube Support Plate), is investigated experimentally.

TL;DR: In this paper, a computational method has been developed to study fluid-structure interaction problems, which is applied to a few cylindrical annular configurations containing incompressible laminar flow; one side of the annulus, either the centre body or the outer containing duct, is supposed to be flexibly supported, and thus to be susceptible to flow-induced instabilities at sufficiently high flow velocities.

TL;DR: In this paper, the friction factor and the momentum and energy flux correction factors for laminar flow through collapsed tubes of varying ellipticities were investigated. And the length scale in the Reynolds number was discussed.

TL;DR: In this article, a nonlinear elasticity theory was applied to the mean state of compliant walls, in which the compliant material was assumed to obey a linear isotropic (stress-strain) law between the second Piola-Kirchoff stress tensor and the Green strain tensor.

TL;DR: A hybrid time-integration method based on azimuthal Fourier expansions for solving the time-dependent incompressible Navier-Stokes equations has been developed in order to obtain superior computational efficiency as mentioned in this paper.

TL;DR: In this article, a spanwise correlation measurement was made for an elastically mounted cylinder exposed to an oscillatory flow and undergoing self-induced vibration in the transverse direction, based on pressure measurements on the surface of the cylinder.

TL;DR: In this paper, a spectral collocation method was developed for the study of confined unsteady flows with periodically oscillating boundaries, based on suitable expansions of the fluid-dynamic parameters, using Chebyshev polynomials and Fourier functions for the spatial expansions and exponential functions of time.

TL;DR: In this paper, the unsteady turbulent flow past a square cylinder is calculated with the Baldwin-Lomax Model and the influence of numerical schemes is studied Comparisons with experimental data and with previous calculations using a Reynolds stress model and 3-D large eddy simulations are presented.

TL;DR: In this article, a solution, exact to the second-order in wave steepness, is presented for the hydrodynamic loads and associated wave-induced motions of a freely floating circular cylindrical body in regular waves.