simple方法求不可压缩问题

fortran cases for BEM

numerical repcipes in fortran (2nd)这是一本在数值计算中广泛参考使用的书籍，适合作为数值计算的参考书。内容包含了线性方程组的求解，逆矩阵和行列式计算，多项式和有理函数的内插与外推，函数的积分和估值，特殊函数的数值计算，随机数的产生，非线性方程求解，傅里叶变换和FFT，谱分析和小波变换，统计描述和数据建模，常微分方程和偏微分方程求解，线性预测和线性预测编码，数字滤波，格雷码和算术码等。

复合材料疲劳寿命预测umat程序，用Fortran语言编写，在ABAQUS中应用(Composite fatigue life prediction UMAT program, written in Fortran language, and applied in ABAQUS)

说明：  关于J2塑性流动理论的金属3的材料本构隐式子程序umat(Implicit Subprogram UMAT for Material Constitutive of Metal 3 in J2 Plastic Flow Theory)

abaqus 弹塑性材料子程序，弹塑性本构，J2理论(abaqus user material subroutine,Elastoplastic material constitute,J2 theory.)

FCT_VOF AND YOUNGS_PLIC fully functioning source codes Debugged and fully functioning source codes Both can be used to calculate by choosing the icase for (1) the Zalesak rotational flow problem (2) the shear flow problem This complete set includes both FCT_VOF and Youngs_plic source code in f90. Including a input data file. The codes have been debugged and tested using MS-FORTRAN. Results can be obtained directly from the output files and loaded to get results. (FCT_VOF AND YOUNGS_PLIC fully functioning source codes Debugged and fully functioning source codes Both can be used to calculate by choosing the icase for (1) the Zalesak rotational flow problem (2) the shear flow problem This complete set includes both FCT_VOF and Youngs_plic source code in f90. Including a input data file. The codes have been debugged and tested using MS-FORTRAN. Results can be obtained directly from the output files and loaded to get results. Ps: statement CALL WRITER needed to be removed and replaced with usual output statement fsuch as: Write(*,*) x(I,j),y(I,j),fi(I,j)…. Etc., for user’s requirement. )

说明：  这个代码是用来构建Bcc结构的金属的源代码(This code is the source code for the metal used to build the Bcc structure)

这个是fortran的高斯积分。适用于单变量积分，需要设置上下限及积分精度等参数，希望对大家有用。

说明：  计算当元件发生开断后，系统的切负荷情况。(Load shedding of the system after interruption of the calculating element)

电力系统连续潮流计算，以牛拉法潮流计算为基础，用来求解系统的PV曲线。(Continuous power system load flow calculation, using bovine Rafah flow calculation, based on the system used to solve the PV curve.)