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Euler_2D
二维Euler方程的Jameson求解方法(Jameson solution of two-dimensional Euler equations)
- 2020-09-09 21:18:03下载
- 积分：1
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back-forward-power-flow
对简单开式网前推回代法计算潮流方便，已通过编译，有运行结果(back forward power flow)
- 2013-09-26 10:12:32下载
- 积分：1
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wudianchafen
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)
- 2013-09-23 16:58:30下载
- 积分：1
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ABAQUS+UMAT+FORTRAN
ABAQUS中用户材料子程序UMAT的开发主要解决两方面的问题：本构模型的建立和积分算法的选择。
本文主要研究非线性材料的UMAT实现方法，并重点研究其迭代算法部分，目前，用户材料子程序UMAT的迭代算法主要是常刚度法，常刚度法的优点在于算法原理较简单，程序编写较方便，缺点是当遇到复杂非线性材料时，其迭代次数较多，收敛速度也较慢，在这个情况下，本文采取的是一种迭代次数较少且收敛速度较快的切线刚度法，具体就是采用FORTRAN语言编制了基于Von-Mises模型的接口程序,并采用切线刚度算法，通过与ABAQUS自带本构关系计算的结果相比较，验证其正确性。(This paper studies the user subroutine UMAT of ABAQUS development methods, the use of FORTRAN language isotropic hardening material model of the interface program, studied the effects of such material is extremely elastic-plastic constitutive relation method.
This article UMAT tightly around the secondary development of technology, the first principle of its interface detail, and then for the theory of nonlinear finite element incremental stiffness of the regular tangent stiffness method and the theory of algorithms to do an in-depth analysis of deduced a regular tangent stiffness and rigidity of the law of the specific expression of algorithm theory, and then the preparation of the two algorithms, respectively, of the UMAT program, and finally the establishment of a specific model checking, bringing with ABAQUS elasto-plastic constitutive relation of the calculated results compared to verify the correctness of the two.)
- 2020-12-05 21:59:24下载
- 积分：1
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adi
说明： matlab的adi方法求解偏微分方程，精确度较高(ADI method of MATLAB for solving partial differential equations)
- 2021-04-17 17:38:52下载
- 积分：1
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pulsewidth
计算傅里叶变换程序，输入光谱，计算其傅里叶变换极限(Computing the Fourier transform procedure, the input spectra, calculate the Fourier transform limit)
- 2012-08-14 18:58:12下载
- 积分：1
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drop
使用fluent udf编程，实现水滴在空气中的运动描述。(Use fluent udf programming, to achieve the movement of water droplet in the air.)
- 2014-06-13 14:27:10下载
- 积分：1
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Python-science-computing
Python 科学计算 的好书,该书主要是在python环境下进行科学计算，非常的棒(Python scientific computing books, the book is mainly for scientific computing in python environment, is the bar)
- 2014-01-07 19:54:55下载
- 积分：1
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curl
利用风速u,v计算海表风应力以及风应力旋度。(Calculation of sea surface wind stress and wind stress curl.)
- 2021-01-06 12:48:53下载
- 积分：1
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PSO_yueshu
说明： 带有不等式/等式约束的加速粒子群算法（apso），主要通过罚函数来进行约束，速度较快，可处理带约束问题(Accelerated particle swarm optimization (APSO) with inequality / equality constraints, which is mainly constrained by penalty function, is fast and can deal with constrained problems)
- 2021-04-10 08:08:59下载
- 积分：1
