Results 91 to 100 of about 314,139 (303)
Metastable helium molecules as tracers in superfluid liquid $^{4}$He [PDF]
, 2009 Metastable helium molecules generated in a discharge near a sharp tungsten tip operated in either pulsed mode or continuous field-emission mode in superfluid liquid $^{4}$He are imaged using a laser-induced-fluorescence technique.
Cahn, S. B. +4 more
core +3 more sources
When Viscous Jets Collide; Liquid Chains, Threads, Webs, Fishbones and Balloons [PDF]
arXiv, 2013 In this fluid dynamics video prepared for the APS-DFD Gallery of Fluid Motion we study the collision of two identical viscous jets at different jet speeds and collision eccentricities. The dynamics of the jet motion are slowed down by orders of magnitude using a synchronized strobe effect coupled with precise timing control of the perturbation ...
arxiv
Multi‐Scaled Cellulosic Nanonetworks from Tunicates
Advanced Functional Materials, EarlyView.Microbial and plant nanonetworks of cellulose have enabled a wide range of high‐performance yet sustainable materials. Herein, a third class of cellulosic nanonetworks is showcased by exploiting the only animal tissue‐producing cellulose nanofibers, i.e., ascidians. An ultrastructure including spherical cells and a microvasculature with diameters of 50–
Mano Govindharaj +10 more
wiley +1 more source
Three flow regimes of viscous jet falling onto a moving surface [PDF]
, 2008 A stationary viscous jet falling from an oriented nozzle onto a moving surface is studied, both theoretically and experimentally. We distinguish three flow regimes and classify them by the convexity of the jet shape (concave, vertical and convex).
Aarts, A. C. T. +3 more
core +2 more sources
Vortex ring pinchoff in the presence of simultaneously initiated uniform background co-flow [PDF]
, 2003 Vortex rings were formed with a piston-cylinder mechanism in the presence of uniform background co-flow supplied through a shroud surrounding the cylinder. The jet and co-flow were started simultaneously. Ratios of the co-flow to jet velocity (Rv) in the
Dabiri, John O. +2 more
core +1 more source
A Pitching Foil with a Flexible flap Creates an Orderly Jet [PDF]
arXiv, 2010 We experimentally studied the effect of flexibility on the flow produced by sinusoidally pitching foil in quiescent fluid. The rigid foil produces a weak, divergent and meandering jet. On the contrary, the foil with a flexible flap produces an orderly, narrow, coherent jet.
arxiv
Evidence for Highly Relativistic Velocities in the Kiloparsec-Scale Jet of the Quasar 3C\,345 [PDF]
, 2012 In this paper we use radio polarimetric observations of the jet of the nearby bright quasar 3C\,345 to estimate the fluid velocity on kiloparsec scales. The jet is highly polarized, and surprisingly, the electric vector position angles in the jet are ``twisted'' with respect to the jet axis. Simple models of magnetized jets are investigated in order to
arxiv +1 more source
All‐Cellulose‐Based Photonic Glitters
Advanced Functional Materials, EarlyView.Uniform, disc‐shaped photonic CNC glitters with adjustable structural colors and diameters are fabricated on hydrophilic ethyl cellulose films using electrospray deposition. By employing patterned ethyl cellulose films with pre‐designed hydrophilic regions, photonic patterns can be created with these all‐cellulose‐based glitters, demonstrating their ...
Ting Wang +5 more
wiley +1 more source
AIP Advances, 2020 The high-speed photography, large eddy simulation, and coupled level set and volume-of-fluid methods were used to study the initial flow structures, the wave morphologies, and the instantaneous velocity distributions of three-dimensional jets from non ...
Yue Jiang +4 more
doaj +1 more source
Applied Sciences, 2020 The work focuses on the development of a thermo-fluid dynamic simulation model of a section of close cooling, called a jet cooler, inserted in the galvanizing line of metal band production.
Giovanni Carozzo +3 more
doaj +1 more source