-
Boundary-Element-Methods
弹性力学问题的边界元—姜弘道,用fortran语言编写的，实例详细(BEM elasticity problems- Jiang Hongdao with fortran language, detailed examples)
- 2020-06-30 06:00:02下载
- 积分：1
-
FFTOcean
基于FFT的海面模拟。能够实现海面的复制，波浪模拟效果较好。(FFT-based simulation of the sea. Be able to achieve replication of the sea, wave simulation better.)
- 2020-07-01 09:40:02下载
- 积分：1
-
Delany_Bazley
纤维状多孔材料的D_B吸声模型，用于计算高孔隙率的刚性多孔材料的吸声系数(D_B absorption model fibrous porous material for sound absorption coefficient high porosity rigid porous material)
- 2021-03-13 10:09:25下载
- 积分：1
-
Scooter
计算水声传播的快速场程序，使用了有限元方法，计算速度快，精度高。(underwater acoustic propagation Fast Field Program, using Finte Element Method,fast and accurate.)
- 2021-03-19 20:39:19下载
- 积分：1
-
DLT057
利用PHOTOSHOP软件可以量测出左右像片各控制点的像素坐标，通过公式可以计算出其像点坐标。再根据给定的控制点的空间坐标，利用直线线性变换解法计算出11个DLT参数即l的系数值以及内方位元素然后解算出外方位元素。另外一种方式是用单像空间后方交会的公式计算出外方位元素。利用单像空间后方交会的来结算影像的外方位元素的基本思想是：以单幅影像为基础，从该影像所覆盖地面范围内若干控制点的已知地面坐标和相应点的像坐标量测值出发，根据共线条件方程，解求该影像在航空摄影时刻的外方位元素。首先建立单文档的程序，建立一个对话框类，在这个类中进行像素坐标、控制点坐标文件的打开与读取，然后利用DLT公式进行外方位元素的解算。
数据检核部分用前方交会算法来进行，首先根据ID找到左右片的像点的同名点，然后计算变换矩阵及系数，根据给定的内方位元素，利用公式解算出像点的控制点坐标，然后和给定的控制点坐标相比较即可进行精度评定。
(PHOTOSHOP software can be measured using a photo of the control points around the pixel coordinates can be calculated by the formula sit out the image point
Standard. According to the given coordinates of control points, the use of straight-line method to calculate the linear transformation of 11 DLT parameters that the coefficient l
Value and calculate the orientation elements of exterior orientation elements and solutions. Another way is to use a single formula as the calculation of space resection
Orientation elements out. Use as space resection alone to settle the image exterior orientation is the basic idea: to single video
As the basis of images from the ground covered by a number of control points within the known ground coordinates and image coordinates of corresponding points in the measured values
, The realities of collinearity equation, find the image in the time of aerial photography exterior orientation elements. First, the process to establish a single document)
- 2011-05-19 10:18:50下载
- 积分：1
-
FDTD-
把 Maxwell 方程式在时间和空间领域上进行差分化。利用蛙跳式(Leap frog algorithm)--空间领域内的电场和磁场进行交替计算，通过时间领域上更新来模仿电磁场的变化，达到数值计算的目的。(The Maxwell equations in time and space on the field differencing. Using the leapfrog (Leap frog algorithm)- Space field for alternating electric and magnetic fields calculated by the time domain electromagnetic field is updated to mimic the changes to achieve the purpose of numerical calculation.)
- 2013-11-04 09:40:37下载
- 积分：1
-
特别篇 mesh网格剖分
说明： 适合初学者学习的fluent网格划分以及udf动网格(A fluent udf example)
- 2020-05-17 19:53:33下载
- 积分：1
-
非线性振动
非线性振动.pdf 刘延柱编写
恢复力与位移不成正比或阻尼力不与速度一次方成正比的系统的振动。尽管线性振动理论早已相当完善,在工程上也已取得广泛和卓有成效的应用，但在实际问题中，总有一些用线性理论无法解释的现象。一般说，线性模型只适用于小运动范围，起出这一范围，按线性问题处理就不仅在量上会引起较大误差，而且有时还会出现质上的差异，这就促使人们研究非线性振动。(Nonlinear Vibration. Compilation of PDF Liu Yanzhu)
- 2020-11-23 20:09:34下载
- 积分：1
-
airgravity
文章由重力和重力梯度的基本理论出发，讨论了重力分量和重力梯度张量分量的2-D傅立叶变换
与重力位的傅立叶变换之间的关系。推导了航空重力梯度仪的测量原理，并对航空重力梯度测量的
应用做了简要的介绍(Article by gravity and gravity gradient of the basic theory, discussed the components of gravity and gravity gradient tensor component of the 2-D Fourier Transform and gravity places the relationship between the Fourier transform. Derivation of the airborne gravity gradiometer measuring principle, and airborne gravity gradient measurements application to do a brief introduction)
- 2008-05-25 01:33:15下载
- 积分：1
-
NumericalRecipesinF90
说明： fortran 90 numerical recipes
- 2020-07-10 04:46:47下载
- 积分：1
