扰动方程 meaning in English
perturbation equation
Examples
- The fourth - order explicit upwind - biased compact difference schemes are used in the spatial discretization of the nonlinear convection terms . these difference schemes can be used in all computational region including the boundary neighborhood , and can overcome the difficulty not adapting simultaneously in the boundary neighborhood for general three - dimensional fourth - order central difference schemes , and improve computational stability a nd resolution . the compact difference equations with high accuracy and resolution for solving the incompressible n - s equations and perturbation equations are composed of these compact difference schemes , and provides an effective numerical method for the investigations of the turbulent spots and coherent structures
文中发展了四阶时间分裂法用于navier - stokes方程及其扰动方程的时间离散；对分裂得出的关于压力的poisson方程和关于速度的helmholtz方程，建立三维耦合四阶紧致迎风差分格式；这些格式适用于包括邻近边界点在内的计算区域，克服了三维各自用四阶中心差分格式离散不适用于边界邻域的困难，并提高了稳定性和分辨率，用这些格式分别组成了数值求解navier - stokes方程及其扰动方程的高精度、高分辨率的紧致差分方程组，为湍斑及湍流相干结构的研究提供了有效的数值方法。 - In this part , outstanding nonlinear characteristic of mesoscale . disturbance in vertical direction , we obtain nonlinear symmrtric disturbance eqution and disturbance amplitude " s evolution eqution by use of multi - scale and singular perturbation technique . the equation is an extensive schrodinger one . what s more , we find it s solution
在这部分，我们重点突出中尺度扰动在垂直方向上的非线性特征，从而得到了非线性对称扰动方程，运用多尺度、奇异摄动方法，得到了扰动的振幅演变方程，它是一个广义schr (