【摘 要】
:
Singular perturbation theory of two-time-scale expansions was developed in inviscid fluids to investigate patteforming, structure of the single surface standing
【机 构】
:
First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China“,”Institute of
论文部分内容阅读
Singular perturbation theory of two-time-scale expansions was developed in inviscid fluids to investigate patteforming, structure of the single surface standing wave, and its evolution with time in a circular cylindrical vessel subject to a vertical oscillation. A nonlinear slowly varying complex amplitude equation, which involves a cubic nonlinear term,an exteal excitation and the influence of surface tension, was derived from the potential flow equation. Surface tension was introduced by the boundary condition of the free surface in an ideal and incompressible fluid. The results show that when forced frequency is low, the effect of surface tension on the mode selection of surface waves is not important.However, when the forced frequency is high, the surface tension cannot be neglected. This manifests that the function of surface tension is to cause the free surface to retu to its equilibrium configuration. In addition, the effect of surface tension seems to make the theoretical results much closer to experimental results.
其他文献
Influence of temperature on measurement of surface plasmon resonance (SPR) sensor was investigated. Samples with various concentrations of NaCl were tested at d
We examine the energy density produced by a state vector which is the superposition of three single electron states in the Dirac field in the four-dimensional M
By using an expansion technique based on the tokamak ordering,the Grad-Shafranov equation is analytically solved for tolamak equilibrium sustained by a full boo
A novel adaptive control for uncertain nonlinear chaotic system is presented. A dynamical neural networks is unknown chaotic system toward the desired target. S
We propose a new model (parabolic bistable system) with a colour noise source. In the presence of periodic input signal, we investigate the output signal to-noi
Starting from the Rayleigh diffraction integral, the propagation equation of ultrashort pulsed beams in dispersive media is derived without making the paraxial
One effective method for suppression of coupling from guided optical modes into cladding modes in an optical fibre Bragg grating is to use cladding mode suppres
A two-dimensional, three-temperature radiation magneto-hydrodynamics model is applied to the investigation of evolutional trends in x-ray radiation power, energ
Based on the multiple-scattering self-consistent-field method, we have studied the photoabsorption spectra near the Si 2p thresholds of silane. According to our
The chirped structure of the white-light continuum generation(WLCG)pulse produced by focusing 800nm laser pulse with a pulse duration of 150fs(FWHM:full-width-a