In part one , the 2 - d finite - difference formula are set up 第一部分進行二維有限差分公式的推導。
Based on the previous work , the equations of motion and elastodynamics are changed . a high - order staggered velocity - stress finite - difference formula of the acoustic field in borehole are set up in cylindrical coordinate , and the corresponding code is accomplished 本文在彈性波動力學的基礎上,將運動方程和本構方程作適當變形,采用交錯網格技術建立了井孔波動方程在柱坐標系下的速度?應力高階有限籌分公式,并編制了相關計算程序。
In this article , physical equations and relative three - dimensional finite - difference formulae in cylindrical and spherical geometries were derived and two - and three - dimensional code in cylindrical and spherical geometries for direct - drive by laser was made , based on the lared - s code in planar geometry . it consisted of the processes such as the inverse bremsstrahlung absorption , electic heat conduction and fluid dynamics 本論文在lared - s程序平面版本基礎上,推導了三維柱和球幾何中激光驅動的物理方程和相應的差分方程,編制了二維和三維柱和球幾何中激光驅動流體不穩(wěn)定性的lared - s程序版本,主要物理過程包括:激光逆軔致吸收、電子熱傳導和流體運動。