نتایج جستجو برای: forced perturbation
تعداد نتایج: 110538 فیلتر نتایج به سال:
Small-scale experimental studies of melt splashing upon the impact water are presented here, with a focus on fluid dynamics and thermal aspects these interactions. Gravity-accelerated droplets forced short-duration jets interacted liquid Rose’s alloy superheated to 100–200 degrees above its melting point. A repeatability study was performed for better-control gravity fall droplet. The amount pe...
A heavy particle impact vibrational excitation and dissociation model for CO2 is presented. This state-to-state based on the forced harmonic oscillator (FHO) theory, which more accurate than current state-of-the-art kinetic models of first-order perturbation theory. The first excited triplet state 3B2 CO2, including its structure, considered in our model, a consistent approach to also proposed....
The unsteady response of nozzles with steady heat transfer forced by acoustic and/or entropy waves is modelled. approach based on the quasi-one-dimensional linearised Euler equations. equations are cast in terms three variables, namely dimensionless mass, stagnation temperature and fluctuations, which invariants system at zero frequency no transfer. resulting first-order differential then solve...
In this paper we develop two new approaches for directly assessing stability of nonlinear wave-based solutions, with application to jointed elastic bars. the first approach, strain a stiffness parameter and construct analytical boundaries using method. Not only does accurately determine periodic solutions found in example case bars connected by joint, but it governs response parametrically forc...
Topological valley-Hall edge states have been realized in a variety of photonic structures across the electromagnetic spectrum because they can be easily engineered by breaking certain lattice symmetries. However, valley-Chern numbers that characterize topological phase are usually fixed symmetry-breaking perturbation and therefore forced to propagate direction. Here we consider kagome metasurf...
The visceral ganglion (VG) comprises the basic motor pool of the swimming ascidian tadpole and has been proposed to be homologous to the spinal cord of vertebrates. Here, we use cis-regulatory modules, or enhancers, from transcription factor genes expressed in single VG neuronal precursors to label and identify morphologically distinct moto- and interneuron subtypes in the Ciona intestinalis ta...
The extended perturbed equilibrium code asymptotic matching is used to simulate the triggering of n = 1 neoclassical tearing modes (NTMs) by a pulsed, rotating, 1, resonant magnetic perturbation (RMP) in two example NSTX discharges. Although discharges are significantly different from one another, results sets simulations quite similar. critical RMP pulse amplitude required trigger an NTM minim...
We investigate the role weakly damped modes play in the selection of Faraday wave patterns forced with rationally-related frequency components mω and nω. We use symmetry considerations to argue for the special importance of the weakly damped modes oscillating with twice the frequency of the critical mode, and those oscillating primarily with the “difference frequency” |n − m|ω and the “sum freq...
In a previous study, others have hypothesized that the variance in vertical errors that occurs while throwing at visual targets is caused by changes in any of three throw parameters: hand location in space, hand translational velocity, and hand orientation. From an analysis of skilled throwers, those authors concluded that vertical error is best correlated with variance in hand orientation, whi...
In this paper, we report the triggering effect of extratropical perturbation on the onset of an atypical Madden-Julian Oscillation (MJO) and onset of the 2015-16 El Niño in March 2015. The MJO exhibited several unique characteristics: the effect of extratropical forcing, atypical genesis location and timing in the equatorial western Pacific, and the extremity of amplitudes in many aspects. The ...
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