共轭梯度算法fortran程序

二次插值法求一维优化问题最优解，适合FORTRAN和优化问题初学者学习参考(Quadratic interpolation optimal solution of one-dimensional optimization problem for FORTRAN and optimization beginners to learn)

在PSCAD/EMTDC软件环境下国际大电网会议德尔直流输测试电系统仿真的文件和代码。(In the PSCAD/EMTDC software environment CIGRE test power transmission DC del file system simulation and code.)

在pscad中运用mutirun完成高压直流输电相关设计(apply mutirun in pscad to complete HVDC)

SIMPLEalgorithm realization on colocated regular orthogonal grid for solution lid-driven cavity viscous fluid flow test

说明：  利用Abaqus子程序UAMP实现PID控制。(PID control is implemented using the Abaqus subroutine UAMP.)

矩量法的fortran程序，忘了那本书的源码了(Method of Moments fortran program, forgot the source of the book)

说明：  二维笛卡尔坐标系下网格的划分，包括多重网格等。(Two-dimensional Cartesian coordinate system, the division of the grid, including the multi-grid and so on.)

说明：  The model used for creating the reference voltage is shown in Fig. 4. First, photovoltaic output current (Ipv) and output voltage (Vpv) are passed through a first order low pass filter with a magnitude of G = 1 and a time constant of T = 0.01 seconds in order to filter out the high frequency components or harmonics from these signals as shown in Fig. 5 and Fig. 6. The filtered current and voltage signals (Ipv_F and Vpv_F) are then fed into the MPPT control block that uses the Incremental Conductance Tracking Algorithm. An algorithm that is based on the fact the slope of the PV array power curve shown in Fig. 7 is zero at the Maximum Power Point (MPP), positive on the left of the MPP, and negative on the right. The MPP can thus be tracked by comparing the instantaneous conductance (I/V) to the incremental conductance (∆ I/∆ V) [11] as in (1):

说明：  umat输入输出变量中文注释。方便初学者使用。(umat abaqus subroutine umat)

用于模拟混凝土单元的弹塑性模型，并有损伤变量，在ABAQUS中umat中输入弹性模量，泊松比与屈服应力即可。(The elastic-plastic model for the simulation of concrete unit, and the damage variable in the ABAQUS umat enter the elastic modulus, Poisson' s ratio and yield stress can be.)