Second-order solution of diffusion equation in multiple-scattering media with photon density wave;

Finite proximate method with 5 points scheme for two-dimensional diffusion equation;

Solving diffusion equation with classic Runge-Kutta method;

From the propagation characteristics of guided waves and the hypothesis of anchoring system interfaces with rigid coupling,the paper concludes the frequency equation of axisymmetric guided waves spreading in a three-layered cylindrical composite structure.

Deduction and analysis of the dispersion equation of 4-layer waveguide with metal-clad;

A generalized single-point precise integration method of three-level five-point explicit difference schemes with higher stability for dispersion equation;

By means of dispersion equation on fused silica and model of dispersion prism,the qualitative interpretation of experiment is presented and theoretical support is produced.

Moreover, the dispersion equation is derived from the wave motion equations and the boundary conditions.

The coupled dispersion equation of soil-structure is derived and the free vibration frequency is calculated.

The dispersion equation of structure acoustic coupling system for fluid filled pipes surrounded by elastic media under axisymmetric motion was derived from shell dynamic equation.

The frequency dispersion equation of pseudo Rayleigh wave in elastic formation is presented here, and its frequency dispersion characteristics are analysed in detail.

To obtain accurate normal modes quickly, the frequency dispersion equation was solved by an efficient numerical algorithm.