drilled-hole-PBG

FLUENT udf 更改S-A 湍流模型源项的程序(modify turbulence model S-A)

实现了声波波动方程有限差分正演模拟，交错网格下，时间2阶空间10阶(Achieve the acoustic wave equation finite difference forward modeling, staggered under the grid, the time second-order space 10 order)

五点差分法(matlab)解椭圆型偏微分方程方程,分法,偏分,五点差分,椭圆型,偏微分方程(Five-point difference method (matlab) solutions of elliptic partial differential equations, sub-law, partial points, five-point difference, elliptic partial differential equations)

将矩阵显示成地震剖面，如果只 a 是输入，可扩展，X，Z，安姆，连接AMX自动决定，否则为“可扩展”是一个标量， ，z 的载体用于注释的偏移和时间，连接AMX振幅范围内。(The matrix shown as seismic profiles, If only a is enter, scal,x,z,amn,amx are decided automatically otherwise, scal is a scalar x, z are vectors for annotation in offset and time, amx are the amplitude range.)

关于FFT和bode图的相关分析和再saber中的实现程序。。关于FFT和bode图的相关分析和再saber中的实现程序。。关于FFT和bode图的相关分析和再saber中的实现程序。。(On the FFT and Bode diagram of the relevant analysis and re saber in the implementation process.)

说明：  ABAQUS 的二次开发,详细注释说明，自学ABAQUS的二次开发(ABAQUS secondary development, detailed notes, self-study ABAQUS secondary development)

截断奇异值分解技术是一种正则化方法，用于不适定问题的数值计算(Truncated Singular Value Decomposition is a regularizaiton method for ill-conditioned problem computation.)

说明：  同伦连续算法，很好得用来求解非线性方程组(Homotopy continuation method, may very well be used to solve nonlinear equations)

利用模糊理论计算开关柜运行状态，层次分析法(Fuzzy theory based operating condition assessment For MV switchgear)

矩阵理论：如线性空间、线性变换、内 积空间、正交投影、Jordan标准型、范数 理论等(Matrix theory: linear space, linear transformations, inner product spaces, orthogonal projection, Jordan standard norm theory, etc.)