Flow-induced periodic snap-through dynamics

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August undefined, 2024

WebSeonwoo Lee, Seyoung Joung, and Daegyoum Kim 2024 “Dynamics of a droplet-impact-driven cantilever making contact with the ground”, Physics of Fluids, 34, 042125. … WebIn fluid dynamics, vortex shedding is an oscillating flow that takes place when a fluid such as air or water flows past a bluff (as opposed to streamlined) body at certain velocities, depending on the size and shape of the body. In this flow, vortices are created at the back of the body and detach periodically from either side of the body forming a Kármán vortex …

Lid-driven cavity flow-induced dynamics of a neutrally buoyant …

WebHowever, irregular and random motions in the fluid-structure coupled dynamics greatly deteriorate the consistency and efficiency of the output power performance. Here, we … WebFlow-induced snap-through dynamics of an elastic sheet (Main investigator: Hyeonseong Kim) Snap-through motion, which is a rapid transition from one equilibrium state to … dan whittle

Flow-Induced Vibrations of Single and Multiple Heated Circular …

WebExperiments combining mechanical rheometry with polarimetry (birefringence and scattering dichroism) have been conducted on a 6% solution of polystyrene (1.86x106 molecular weight) in dioctyl phthalate. Birefringence is used to measure the extent of segmental orientation, whereas the dichroism is sensitive to orientation and deformation of … WebAbstract. The stability and post-critical behaviour of periodic snapping are investigated experimentally for a buckled elastic sheet with two clamped ends under an external … WebMay 1, 2024 · Here, the snap-through dynamics of dual buckled elastic sheets in tandem, which are coupled through a high-Reynolds-number external flow, are experimentally … birthday wishes to principal from teacher

Flow induced by ependymal cilia dominates near-wall ... - PubMed

One‐way flow of a rarefied gas induced in a channel with a periodic ...

WebOct 15, 2024 · The time-domain voltage response in Fig. 13 (e) shows the periodic snap-through motion with relatively high frequency vibrations at each snap-through phenomenon, which is not observed from the velocity response of the tip mass in Fig. 11 (e). This indicates that the sub-beams of the harvester undergo more complicated local … WebSep 9, 2024 · According to the needs generated by the industry, there is an urgent need to investigate the flow vibration response law of the elastic tube bundle of heat exchangers subjected to the coupling effect of shell and tube domain at different inlet flow velocities. In this paper, based on the continuity equation, momentum equation, turbulence model, … birthday wishes to our grandsonWebJul 8, 2024 · Lid-driven cavity flow-induced dynamics of a neutrally buoyant solid: Effect of Reynolds number, flexibility, and size; Physics of Fluids 34, 073310 ... The solid … birthday wishes to principal

"WebMar 3, 2024 · The stability and post-critical behaviour of periodic snapping are investigated experimentally for a buckled elastic sheet with two clamped ends under an external uniform flow. ... Continuous exposure to fluid-dynamic loading induces snap-through oscillations from an initial equilibrium state. While the critical flow velocity for bifurcation is ... " - Flow-induced periodic snap-through dynamics

Flow-induced periodic snap-through dynamics

WebMay 3, 2004 · This paper investigates the possibility of developing a nonintrusive, low-cost, flow-rate measurement technique. The technique is based on signal noise from an accelerometer attached to the surface of the pipe. The signal noise is defined as the standard deviation of the frequency-averaged time-series signal. Experimental results …

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WebMar 3, 2024 · The stability and post-critical behaviour of periodic snapping are investigated experimentally for a buckled elastic sheet with two clamped ends under an external … WebMay 4, 2024 · Snap-through behaviors can be categorized as chaotic (intermittent) and periodic (persistent) snap-through [7, 8]. When a post-buckled plate is subjected to a …

WebFlow-induced periodic snap-through dynamics Hyeonseong Kim et al-Delayed bifurcation in elastic snap-through instabilities Mingchao Liu et al-This content was … WebOct 17, 2013 · At intermediate input amplitudes, the snap through mass oscillates in a multiharmonic (figures 9(c) and (d)) or aperiodic (figures 9(e) and (f)) fashion between the two equilibrium positions. When the input amplitude is relatively large, the snap through mass has high and periodic orbits about the two stable equilibrium positions.

WebJul 8, 2024 · Lid-driven cavity flow-induced dynamics of a neutrally buoyant solid: Effect of Reynolds number, flexibility, and size; Physics of Fluids 34, 073310 ... The solid undergoes a transient spiraling motion before attaining a periodic orbit-based limit cycle. The flow also attains the periodic state after the initial transients. WebFeb 1, 2024 · Motivated by the interesting properties of bi-stable structures, we introduce a novel concept of a WD-TENG based on periodic snap-through phenomena (Fig. 1 a …

WebOct 13, 2024 · The product of more than 40 years of research and development at the Canadian Nuclear Laboratories, this authoritative reference covers all relevant aspects of flow-induced vibration technology, including vibration failures, flow velocity analysis, vibration excitation mechanisms, fluidelastic instability, periodic wake shedding, acoustic ...

WebApr 1, 2024 · adshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A dan wichert plumber graylingWebOct 14, 2013 · We consider the dynamic snapping instability of elastic beams and shells. Using the Kirchhoff rod and Föppl-von Kármán plate equations, we study the stability, … dan wickline architectWebSnapping. The snap-through instability presents an important mechanism for directed shape change in the design of shape-shifting structures. A recent review on this topic by Hu et al. will hopefully provide a nice compliment to the following discussion [87]. There have been demonstrations of actuating snap-through instabilities for just about ... birthday wishes to sister not by bloodWebInstead, we ran united atom molecular dynamics simulations of bimodal polyethylene blends, comprising linear chains at a 50 : 50 mix of long (1000 carbon) and short … dan wickstrom obituaryWebAug 25, 1997 · The flow induced by periodic vortex rings wrapped around a columnar vortex core - Volume 345. ... (1989) model for the columnar vortex dynamics and by numerical solution of the axisymmetric Navier–Stokes and Euler equations in the vorticity–velocity formulation using a viscous vorticity collocation method, are used to … dan wicker real estate agentWebJun 24, 2024 · Abstract The stability and post-critical behaviour of periodic snapping are investigated experimentally for a buckled elastic sheet with two clamped ends under an … dan wicklum transition acceleratorWebSep 2, 1998 · A rarefied gas in a channel of two parallel plane walls with a spatially periodic steady temperature distribution, on which a series of ditches is dug periodically, is considered, and the behavior of a flow induced by the temperature variation on the walls is investigated numerically for various Knudsen numbers and ditch sizes by the standard … birthday wishes to sir