弹性波方程 meaning in English
elastic wave equation
Examples
- In this paper , on the base of paraxial approximations , we present a set of absorbing boundary conditions of 3d elastic wave equations and apply to the 3d elastic wave numerical modeling in isotropic medium
本文基于傍轴近似法提出了计算三维弹性波方程的吸收边界条件公式，表示了各边界面、边棱和角点处波场所满足的单程波方程，并在三维弹性波数值模拟中进行了应用。 - The main achievements are concluded in the following paragraphs . the elastic wave equations and the boundary conditions of saw in different media are studied , and the behaviors of saw in the isotropic , anisotropic and piezoelectric media are fully discussed
主要的研究工作总结如下：通过对不同介质中的弹性波方程和表面弹性波边界条件的研究，对各向同性、各向异性以及压电介质中的表面弹性波行为进行了详细的讨论。 - In this paper , deconvolution and linearized inversion of receiver function are improved ; multi - channel deconvolution and wavelet inversion are developed for receiver function . the elastic wave motion equation is applied in the simulation and migration of receiver function in lateral inhomogeneous media , multi - grid algorithm is introduced in numerical modeling of elastic wave motion equation , and phase - delay boundary condition is also provided to absorb boundary reflection
在此基础上，重点研究和发展了横向非均匀介质中，基于波动方程的数值模拟与偏移成像方法，首次将多重网格算法引入到弹性波方程的数值模拟和接收函数的偏移成像，还发展了一种延迟边界方法，以消除人为边界反射的影响。 - Three finite - difference methods , i . e . , stagger grid , implicit and explicit algorithms , are analyzed in detail . multi - grid algorithm is firstly introduced in elastic wave simulation , to solve for the stability problem inherent in stagger grid and implicit algorithm , also for the efficiency problem inherent in explicit algorithm , and the precision , stability and efficiency for simulation of elastic wave arc increased by multi - grid method . phase - delay method is provided to effectively absorb boundary reflection and increase efficiency for wave motion simulation , based on phase delay and amplitude decaying features along wave propagation
在水平分层介质接收函数的波形反演研究的基础上，本文系统阐述了非均匀介质中弹性波传播数值模拟常用的三种有限差分方法：显式差分、隐式差分和交错网格法，首次将多重网格算法应用于弹性波方程的数值模拟问题，克服了交错网格法和显式差分法稳定性差，以及隐式差分法计算效率低的缺点，大大提高了弹性波数值模拟的精度、稳定性和计算效率。