Journal of Fluid Mechanics
Công bố khoa học tiêu biểu
* Dữ liệu chỉ mang tính chất tham khảo
Sắp xếp:
Oscillating foils of high propulsive efficiencyThrust-producing harmonically oscillating foils are studied through
force and power
measurements, as well as visualization data, to classify the principal
characteristics of
the flow around and in the wake of the foil. Visualization data are obtained
using
digital particle image velocimetry at Reynolds number 1100, and force and
power
data are measured at Reynolds number 40 000. Th... ... hiện toàn bộ
Journal of Fluid Mechanics - Tập 360 - Trang 41-72 - 1998
In-line flow-induced vibrations of a rotating cylinderThe flow-induced vibrations of an elastically mounted circular cylinder, free to oscillate in the direction parallel to the current and subjected to a forced rotation about its axis, are investigated by means of two- and three-dimensional numerical simulations, at a Reynolds number equal to 100 based on the cylinder diameter and inflow velocity. The cylinder is found to oscillate up to a r... ... hiện toàn bộ
Journal of Fluid Mechanics - Tập 781 - Trang 127-165 - 2015
The role of wake stiffness on the wake-induced vibration of the downstream cylinder of a tandem pairAbstract When a pair of tandem cylinders is immersed in a flow the downstream cylinder can be excited into wake-induced vibrations (WIV) due to the interaction with vortices coming from the upstream cylinder. Assi, Bearman & Meneghini (J. Fluid Mech. , vol. 661, 2010, pp. 365–401) concluded that the WIV excitation mechanism has its orig... ... hiện toàn bộ
Journal of Fluid Mechanics - Tập 718 - Trang 210-245 - 2013
On the wake-induced vibration of tandem circular cylinders: the vortex interaction excitation mechanismThe mechanism of wake-induced vibrations (WIV) of a pair of cylinders in a tandem arrangement is investigated by experiments. A typical WIV response is characterized by a build-up of amplitude persisting to high reduced velocities; this is different from a typical vortex-induced vibration (VIV) response, which occurs in a limited resonance range. We suggest that WIV of the downstream cylin... ... hiện toàn bộ
Journal of Fluid Mechanics - Tập 661 - Trang 365-401 - 2010
Wake-induced galloping of two interfering circular cylindersMeasurements are presented of fluid-dynamic instability of a smooth circular cylinder, free to oscillate laterally against linear springs in the wake from an identical stationary neighbouring body. The observations also encompassed determination of static forces on the downstream cylinder as functions of relative position of the cylinder pair. Most of the experiments were performed under t... ... hiện toàn bộ
Journal of Fluid Mechanics - Tập 146 - Trang 383-415 - 1984
Experiments on particle—turbulence interactions in the near–wall region of an open channel flow: implications for sediment transportA high-speed video system was used to study the interaction between sediment particles and turbulence in the wall region of an open channel flow with both smooth and transitionally rough beds. In smooth flows, particles immersed within the viscous sublayer were seen to accumulate along low-speed wall streaks; apparently due to the presence of quasi-streamwise vortices in the wall region. L... ... hiện toàn bộ
Journal of Fluid Mechanics - Tập 326 - Trang 285-319 - 1996
Subharmonic resonance of Venice gates in waves. Part 1. Evolution equation and uniform incident wavesFor flood protection against storm tides, barriers of box-like
gates
hinged along a
bottom axis have been designed to span the three inlets of the Venice Lagoon.
While
on calm days the gates are ballasted to rest horizontally on the seabed,
in stormy
weather they are raised by buoyancy to act as a dam which is expected to
swing to
and fro in unison in response to the normally... ... hiện toàn bộ
Journal of Fluid Mechanics - Tập 349 - Trang 295-325 - 1997
The inverse water wave problem of bathymetry detectionAbstract The inverse water wave problem of bathymetry detection is the problem of deducing the bottom topography of the seabed from measurements of the water wave surface. In this paper, we present a fully nonlinear method to address this problem in the context of the Euler equations for inviscid irrotational fluid flow with no further approximation. Given the water... ... hiện toàn bộ
Journal of Fluid Mechanics - Tập 714 - Trang 562-590 - 2013
Mechanism of frequency lock-in in transonic buffeting flowFrequency lock-in can occur on a spring suspended airfoil in transonic buffeting flow, in which the coupling frequency does not follow the buffet frequency but locks onto the natural frequency of the elastic airfoil. Most researchers have attributed this abnormal phenomenon to resonance. However, this interpretation failed to reveal the root cause. In this paper, the physical mechanism of ... ... hiện toàn bộ
Journal of Fluid Mechanics - Tập 818 - Trang 528-561 - 2017
Fingering instability in buoyancy-driven fluid-filled cracksThe stability of buoyancy-driven propagation of a fluid-filled crack through an elastic solid is studied using a combination of theory and experiments. For the theory, the lubrication approximation is introduced for fluid flow, and the surrounding solid is described by linear elasticity. Solutions are then constructed for a planar fluid front driven by either constant flux or constant volu... ... hiện toàn bộ
Journal of Fluid Mechanics - Tập 672 - Trang 60-77 - 2011
Tổng số: 635
- 1
- 2
- 3
- 4
- 5
- 6
- 10