This study lays out a methodology whereby conditions necessary for vortex ring to separate from the shear flow can be identified by relationship between characteristic velocities of jet and along axis symmetry. criterion identifies pinch-off take place when velocity induced at origin forming surpasses maximum feeding centerline, defined twice piston velocity. A strategy determining these purely...

Different sources of uncertainty in CFD simulations are illustrated by a detailed study of two-dimensional, turbulent, transonic flow in a converging-diverging channel. Runs were performed with the commercial CFD code GASP using different turbulence models, grid levels, and flux-limiters to see the effect of each on the CFD simulation uncertainties. Two flow conditions were studied by changing ...

Smartphone addiction is a new phenomenon when a smartphone becomes a necessity in our daily life. This study explores smartphone usage patterns associated with its addiction drivers and results. Four factors such as ease of use, emotional lift, preference of social interaction, and flow, are used for drivers and neglect of work is used as a proxy of addiction result. In the output of path analy...

The commonly applied self-similar solution of the problem converging shock wave (shock) evolution with constant compression medium behind front results in an unlimited increase velocity vicinity implosion. In this paper, convergence cylindrical shocks water is analyzed using mass conservation law, when a variable. model predicts finite range radii, which depends on adiabatic index and where pre...

Abstract We show convergence of small eigenvalues for geometrically finite hyperbolic n -manifolds under strong limits. For a class convergent convex sets in strongly sequence Kleinian groups, we use the spectral gap limit manifold and exponentially mixing property geodesic flow along to find asymptotically uniform counting formulas number orthogeodesics between sets. In particular, this provid...

We report experimental observations of sound waves in a granular material during resonant silo discharge called silo music. The grain motion was tracked by high-speed imaging while the resonance of the silo was detected by accelerometers and acoustic methods. The grains do not oscillate in phase at neighboring vertical locations, but information propagates upward in this system in the form of s...

Momentum transfer between the main channel and the side flood plains tends to increase the floodplain shear whereas the main channel shear decreases. The increase and decrease in shear are greatly influenced when a compound channel is with non-prismatic flood plains. In converging compound channels water flow on the floodplain crosses over water flow in the main channel, resulting in increased ...

For the study of transients in gas-liquid flows, the equations of the so-called separated flow model are inadequate, because they possess, in the general case where gas and liquid move at different velocities, complex characteristics. This paper is concerned with the equations of motion for bubbly flow. The equations are discussed with emphasis on the aspects of relative motion and the characte...

A method of visualizing and characterizing stirring structures of high Rayleigh number geophysical flows whose time dependence is strongly aperiodic is presented. To this end, the system is leaked by defining a smaller region of the flow, so that a particle is considered to be escaped if it enters this region. By means of an ensemble of nonescaped tracers, we are able to characterize stirring a...

In this study, the effect of channel-bed slope and non-prismatic converging channel on discharge coefficient labyrinth weirs is numerically investigated utilizing FLOW-3D model. Numerical simulation results show that modifying weir through both methods improves coefficient. Among selected bed slopes wall, β=4% angle θ=10° yielded highest For a ratio HT/P=0.1, (HT: flow height, P: height) rate f...