Fortran编写流线曲率法优化叶片

ABAQUS UMAT; Drucker-Prager; 随动硬化The development of a pressure-dependent constitutive model with combined multilinear kinematic and isotropic hardening is presented. The constitutive model is developed using the ABAQUS user material subroutine (UMAT). First the pressure-dependent plasticity model is derived. Following this, the combined bilinear and combined multilinear hardening equations are developed for von Mises plasticity theory. The hardening rule equations are then modified to include pressure dependency. The method for  implementingthe new constitutive model into ABAQUS is given. Finally, verification

矩量法解线天线，可以计算表面的电流密度分布，并利用快速算法解矩阵。(MOM solve line antenna。)

使用同位网格SIMPLE算法计算阶梯流动(Calculation of step flow using SIMPLE algorithm with collocated grids)

abaqus粘弹性人工边界，手动添加比较简单的模型(learning abaqus)

本代码高效简洁，利用率高。使用时需改动少量参数。主要功能就是利用frotran语言求得时间序列的小波分析结果。(this program is short and effect. only a few parameters need to be modified when used. this main fuction of this program calculate the waavelet of time serises)

各种风机的模型，对pscad初学者有帮助！(Various fan models, useful for beginners pscad!)

用于计算大气辐射传输的在windows界面下的软件，可以计算大气透射率，大气程辐射，等进行大气校正(The software used to calculate atmospheric radiative transfer under the windows interface can calculate atmospheric transmittance, atmospheric range radiation and other atmospheric correction.)

本程序利用五阶WENO格式结合Lax-Friedrichs矢通量分裂法求解二维Euler 方程(u_t = RHS = -f(u)_x - g(u)_y)的空间项，应用三阶TVD Runge-Kutta法 求解其时间项来模拟Riemann间断问题.(The program uses five order WENO scheme combined with Lax-Friedrichs vector flux splitting method to solve two-dimensional Euler. Equation (u_t = RHS = -f (U) _x g (U) _y) space terms, the three order TVD Runge-Kutta method is applied. The time term is solved to simulate the Riemann discontinuity problem.)

基于Fortran编写中性风子程序源代码，有效的中性风对电离层影响甚大，其在磁子午面的分量影响等离子体场向分布。

说明：  PSCAD柔直输电模型，送端和受端各包含2台发电机，供学习参考(The flexible transmission model of PSCAD includes two generators at the sending end and the receiving end for reference.)