Finite Difference Matlab

SOFEA project is a Matlab object-oriented Finite Element toolkit. It includes the book, A Pragmatic Introduction to Finite Element Analysis for Structural Engineers. The toolkit provides linear transient thermal analysis capabilities, with stress analysis and coupled multi-physics coming...

Global tsunami can be started with asteroid impact or earthquake or thermonuclear bomb. It simulated with 2d wave equation. It is wave equation on sphere surface. Land influence neglected. triangular mesh used. The method is some kind of finite difference method. See fromulas in laplacian.jpg...

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

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 lsqnonlin function using the CSD.


Platforms: Matlab

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

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

The function LMFsolve.m serves for finding optimal solution of an overdetermined system of nonlinear equations in the least-squares sense. The standard Levenberg- Marquardt algorithm was modified by Fletcher and coded in FORTRAN many years ago. LMFsolve is its essentially shortened version...


Platforms: Matlab

The function The LMFnlsq.m serves for finding optimal solution of an overdetermined system of nonlinear equations in the least-squares sense. The standard Levenberg- Marquardt algorithm was modified by Fletcher and coded in FORTRAN many years ago (see the Reference). This version of LMFnlsq is...


Platforms: Matlab

The Heating and Cooling a Cylinder model computes the radial temperature distribution within a long cylinder as it is heated and cooled by a surrounding fluid. The cylinder is broken into shells and the temperature of each shell is computed using a finite difference approximation to the radial...


Platforms: Mac

The Heating and Cooling a Sphere model computes the radial temperature distribution within a sphere as it is heated and cooled by a surrounding fluid. The sphere is broken into shells and the temperature of each shell is computed using a finite difference approximation to the radial heat equation...


Platforms: Mac

Clustertech Parallel Environment (CPE) is a C++ software platform which facilitates the development, deployment and execution of parallel applications, unifying and greatly simplifying the process. The project provides optimized domain specific libraries for Monte Carlo (MC) simulation and for...


Platforms: *nix

PDL::Fit::Levmar is a Perl module with Levenberg-Marquardt fit/optimization routines. Levenberg-Marquardt routines for least-squares fit to functions non-linear in fit parameters. This module provides a PDL ( PDL::PDL ) interface to the non-linear fitting library levmar (written in C). Levmar...


Platforms: *nix

PETSc is a suite of data structures and routines for the scalable (parallel) solution of scientific applications modeled by partial differential equations. PETSc library employs the MPI standard for all message-passing communication. PETSc is easy to use for beginners. Moreover, its careful...


Platforms: *nix

WDSolve is a black box solver for nonlinear hyperbolic partial differential equations. WDSolve is based on the Wave Digital method, leading to explicit finite difference schemes with superior stability properties.


Platforms: Windows

atlc is an Arbitrary Transmission Line Calculator (for transmission lines and directional couplers).There are 12 programs that comprise the package atlc. One of the programs is called atlc; the other 11 have different names. Using the programs comprising the package atlc one is able to:-Calculate...


Platforms: *nix, C/C++, BSD

Introduction----------------This code simulates commodity spot prices using the Clewlow and Strickland one factor daily spot model using a Monte Carlo approach. The derived stochastic differential equations (SDEs) are solved using several finite difference schemes.The paper detailing the...


Platforms: Matlab

Ok, yes, my expectation was that when I saw this, before I downloaded it I expected it to be a student's homework assigment. In fact, this is a reasonably carefully crafted tool.One serious issue is that this code requires you to provide explicit functional forms for the gradient and Hessian....


Platforms: Matlab

This toolbox implements an energy-based segmentation algorithm that usesfinite-difference based level set evolution. (See [1], [2]).Multiscale control of the curve evolution is implemented -- this greatly reducesthe sensitivity to initialization as well as improves the execution speedby factors...


Platforms: Matlab

As a coursework, we are required to price a double barriers knock-in binary put option. We used finite difference method in 24 ways and multinomial lattice in 12 ways. We also implemented analytic and Markov chain method. At the end, we compared these four methods and Monte Carlo method.In this...


Platforms: Matlab

This program timesteps the Shallow Water Equations in a curved basin of variable depth. The central timestep finite difference method is used to linearly approximate the differentials.*I'm a student, so ideas for improvement and criticisms would be awesome.


Platforms: Matlab