Finite Difference Equation
ALL-IN-ONE MULTI-PHYSICS FINITE ELEMENT MODELING
Ever wish there was a flexible system for solving all the partial differential
equation problems that come up in science and engineering, so you didn't have
to buy and learn a new software tool for each problem?
Well, now your wish has come...
Platforms: Windows, Mac, Linux
License: Freeware | Size: 9.23 MB | Download (50): FlexPDE Student 510s Download |
C-Library & Matlab Toolbox implement a numerical solution of Poisson equationdiv(e*grad(u))=ffor Cartesian 1D, Cartesian 2D and axis-symmetrical cylindrical coordinates with respect to steeply varying dielectrical permittivity e.Library uses regular rectangular grid with mixed boundary...
Platforms: Matlab
License: Freeware | Size: 30.72 KB | Download (50): Finite Volume Poisson Solver Download |
Computes the distance 2-point correlation function of a finite 2D lattice. The functions is:[ coorfun r] = twopointcorr(x,y,width,height,dr)Where x is the list of x coordinates of lattice points. y is the list of y coordinates of the lattice points, width is the width of the lattice, height is...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (50): Two point correlation function of a finite 2D lattice Download |
This function computes a double block bootstrap percentile confidence interval and a bootstrap standard error for the difference of two z-transformed Pearson correlation coefficients. The z-statistic is defined as Zd = z1-z2 = atanh(r1)-atanh(r2), where r1 is the Pearson correlation coefficient...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (50): bbcorrdiff: Bootstrap statistics for the difference of correlation coefficients Download |
Study of heat transfer and temperature of a 1x1 metal plateheat is dissipated through the left right and bottom sides and emp at infinity is t n(n-1) points in consideration,Temperature at top end is 500*sin(((i-1)*pi)/(n-1)A*Temp=U where A is coefficient matrix and u is constant matrixfinite...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (49): temperature analysis using finite difference method Download |
Introduction:This toolbox will perform Anisotropic Non-Linear Diffusion filtering on a 2D gray/color or 3D image. This filtering will reduce the image noise while preserving the region edges, and also enhancing the edges by smoothing along them.This is one of the more advanced image enhancement...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10.13 MB | Download (49): Image Edge Enhancing Coherence Filter Toolbox Download |
Matlab files include Gaussian numerical quadrature, Newton's method for finding roots, finite element method for 1D wave equation, and pattern formation (KPP anda system of two coupled PDEs).
Platforms: Matlab
License: Freeware | Size: 624.64 KB | Download (49): Matlab files of the book: Mathematical Modelling for Earth Sciences Download |
Solves nonlinear diffusion equation which can be linearised as shown for the general nonlinear diffusion equation in Richtmyer & Morton [1]. The approach is to linearise the pde and apply a Crank-Nicolson implicit finite difference scheme to solve the equation numerically.Matlab run...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 194.56 KB | Download (48): Finite Difference solution to nonlinear diffusion equation Download |
Complex step differentiation (CSD) has many advantages in efferency and accuracy over finite difference approaches (central, forward and backward). This code demonstrates how the Jacobian matrix of a given function at the reference point can be calculated using the CSD approach.
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (48): Complex step Jacobian Download |
Complex step differentiation (CSD) is a superior numerical differentiation approach. Normally, it is more efficient and accurate than finite difference appraoch. This package provides a way to improve the MATLAB fmincon function using the CSD.
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (48): fminconCSD Download |
Equation is a useful software that can let you study and solve the equations of the second degree, enter only the values of a, b, and c and this software will do the rest. Once all the values are entered, the application will display the value of Delta.
Platforms: Windows
License: Demo | Cost: $0.00 USD | Size: 307 KB | Download (48): Equation Download |
The linear Stochastic Differential Equation (LSDE) is very widely used equation in the noise analysis of LTI circuits. It involves the input signal to be perturbed with Gaussian white noise. To find the solution statistics like mean, varaiance is a tasking job and requires full power of...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (48): Stochastic Differential Equation (SDE) Solutions Download |
The function nonlinearBVP_FDM .m is an implementation of thenonlinear finite difference method for the general nonlinearboundary-value problem --------------------------------------------- y''=f(x,y,y'), for a> Y = nonlinearBVP_FDM(1,3,17,43/3);Note that Y(:,1) represents x and Y(:,2) is vector...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (47): Nonlinear Finite Difference Method Download |
http://simulations.narod.ru/Solve 2d wave equation with Finite Difference Method. Theory described in description.docx. Droplet put on the water surface to start waves. There is a decay in wave equation. conv2 function used for faster calculations.as_colormap.m - visualization of waves as...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 3.92 MB | Download (47): solve 2d wave equation with FDM Download |
Simulation of a gaussian pulse propagated in free space through 1000 um, using finite differences.Just run the script and you'll get a surface which is made up of the pulse propagated at 1 um steps.
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (47): Finite Difference Beam Propagation Method Download |
A simple one-dimensional finite-difference time-domain (FDTD) electromagnetic routine that allows the user to specify arbitrary permittivity, permeability and conductivity profiles. Useful for helping students to visualize reflection, transmission, wave velocity and impedance concepts. Will also...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (47): fdtd1d.m Download |
A fortran sample code which in Finite Difference Time Domain Method for Electromagnetics. - Kunz K.S., Luebbers R.J. book was translated to matlab code. For movie, a little bit code must be added into it. Especially it needs to vectorize for electric field updates.
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (47): 3-D FDTD Download |
MAxSym is a MATLAB tool for the simulation of two-dimensional, non-uniform, axi-symmetric groundwater flow in saturated, porous media. MAxSym solves the governing partial differential equation using a finite-difference approach (Louwyck et al., in press). The model is axi-symmetric, which means...
Platforms: Matlab
License: Freeware | Size: 3.32 MB | Download (47): MAxSym Download |
The NVIDIA GPU Computing SDK provides hundreds of code samples, white papers, to help you get started on the path of writing software with CUDA C/C++, OpenCL or DirectCompute. The SDK code samples covers a wide range of applications and techniques, including: Simple techniques demonstrating...
Platforms: Mac
License: Freeware | Size: 138.73 MB | Download (47): GPU Computing SDK Download |
This set of simulations make use of the Alternating Direction Implicit method for solving the parabolic wave equation that arises in FD BPM.The zip file includes the following programs:FDBPM3D_free_space.m - Animation and video of the 3D propagation.FDBPM3D_free_space_slice.m - It shows slices of...
Platforms: Matlab
License: Freeware | Size: 92.16 KB | Download (47): Finite Differences Beam Propagation Method in 3-D Download |