discontinuous galerkin method for Sod problem

模拟断裂的子程序，对模拟断裂修改材料模型很有用，用于ABAQUS模拟中(Simulate the subroutine of the break)

说明：  线弹性模型,该模型可以用于abaqus的子程序调用(Linear elastic model)

单相材料再结晶代码，deform二次开发再结晶代码例子。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。

本模型模拟微电网分布式电源并网运行模式，电源采用理想直流电压源代替，逆变器采用PQ控制，包括P/Q外环控制器和电流的内环控制器，对于储能、风机、光伏等分布式电源的并网运行具有很高的参考价值，模型可运行，仿真结果稳定可靠。(This model to simulate the micro grid distributed power grid operation mode, the power supply adopts the ideal dc voltage source to replace, inverter adopts PQ control, including P/Q outer loop controller and current inner loop controller, energy storage, fan, such as photovoltaic parallel operation of distributed power supply also can be used as a reference, the simulation result is stable and reliable.)

说明：  this is fortran napl simulator example done by EPA

有限元dyna3d源程序1991版，大家可以参考参考！(Finite element dyna3d source 1991 version, we can refer to reference!Finite element dyna3d source 1991 version, we can refer to reference!)

说明：  fortran 学习软件非常有用啊，请管理员加我。

abaqus显示计算二次开发小程序VUMAT(ABAQUS development program VUMAT)

jamson中心格式求解naca0012翼型的绕流，计算精度较高(format solve naca0012 airfoil of jamson center around the flow calculation accuracy)

新能源微网模型，还有光伏，蓄电池，分电场等模块(The new energy microgrid model, as well as photovoltaic, battery, sub electric field modules.)