Finite Difference Equation

How do you know if a chemical equation is balanced? What can you change to balance an equation? Play a game to test your ideas! Sample Learning Goals * Balance a chemical equation. * Recognize that atoms are conserved in a chemical reaction. * Describe the difference between coefficients and...

The Two Dimensional Schrodinger Equation model simulates the time evolution of a two-dimensional wave packet as it moves towards a slit with an obstacle in it, both with variable widths. By changing three parameters via sliders provided, slit width, obstacle width, and initial position of the...

SLFFEA stands for San Le's Free Finite Element Analysis. It is a package of scientific software and graphical user interfaces for use in finite element analysis. It is written in ANSI C by San Le and distributed under the terms of the GNU license.


Platforms: *nix

MathCast is an equation editor, an application that allows you to input mathematical equations. These equations can be used in documents, emails, and webpages. The equations can be rendered graphically to the screen, to picture files, or to MathML. MathCast is a free and open source application....


Platforms: Windows, Windows 8, Windows 7

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

FEVal, the Finite Element Evaluator written in Python, provides easy conversion for many Finite Element data formats (both binary and ascii). Mesh modification is very easy. Values of model results can be accessed given coordinates in physical space.


Platforms: Windows, Mac, Linux

The Helsinki Finite-State Transducer toolkit is intended for processing natural language morphologies. The toolkit is demonstrated by wide-coverage implementations of a number of languages of varying morphological complexity.


Platforms: Mac, Linux

Impact is an explicit Finite Element Program Suite which simulates dynamic impact events. It has a range of elements, contact handling and different material laws. Models can be created, solved and analyzed with the included pre- and postprocessor or wit


Platforms: Windows, Mac, BSD, Linux

jFAST is a simple finite automata (FA) graphical simulation utility; it is designed to feature simple mechanisms for creating, editing, and simulating FA. jFAST is ideal for use by students, instructors, and self-guided explorers alike.


Platforms: Windows, Mac, Linux

Develop finite element stress analysis programs, that work with free cad systems(Maybe QCad). Right now there's only a 2d gridded structure analysis prog with a crappy interface, written mainly in octave.


Platforms: Windows, Mac, Linux

Tochnog is a finite element analysis program. It provides parallel and distributed solvers, 2D beams and trusses. The department of foundation engineering and tunneling of Ed. Zueblin A.G., Germany, sponsors the integration of hypoplasticity in Tochnog. A state-of-the-art version (automatic...


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

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

Flow past a wedge is governed by the Falkner-Skan equation. This equation admits only numerical solution, which requires the application of the shooting technique. The program plots the velocity for various wedge angles. The result obtained is in agreement with figure 8-10 in page 352 of Deen's...


Platforms: Matlab

In the programs, we perform flash calculations of a mixture of hydrocarbons (ethane, propane, n-butane and n-pentane) using the Rachford-Rice equation. The phi-phi method, based on the SRK equation of state, is used to compute the equilibrium constants. We also find the True Vapor Pressure. All...


Platforms: Matlab

We solve a binary distillation problem using the solution of a Riccati equation. We find that four plates are needed to achieve the desired product purity. We also compute the number of stages with the classical approach by stepping off stages using the equilibrium curve and the operating line....


Platforms: Matlab

The program 'Efinder' numerically solves the Schroedinger equation using MATLAB's 'ode45' within a range of energy values. By taking advantage of the dramatic endpoint behavior of the resulting wave solutions, 'Efinder' determines the eigen energies to any accuracy needed.This program has been...


Platforms: Matlab

The submission finds two parameters a_1 and a_2, coefficients belong to a linear equation of temperature, that minimize the difference between the pressures calculated by an equation of state and the experimental values at same temperature and volume conditions.


Platforms: Matlab

C-Library & Matlab Toolbox implement a numerical solution of Poisson equationdiv(e*grad(u))=fin Cartesizan 3D coordinates with respect to steeply varying dielectrical permittivity e. Library uses regular rectangular grid with mixed boundary conditions, FVM-based equation discretization and...


Platforms: Matlab

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

Two mass variable equations with "Aerospace 3Dof Simple Variable Mass Blockset" are compared in a 1Dof frictionless environment. Initial conditions are given in Model Callbacks.Results showed that "Aerospace 3Dof Simple Variable Mass Blockset" uses the incorrect equation.


Platforms: Matlab