Equation

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...

Play around. Change parameters. Make movies? Enjoy.

The m-file called routh_sc that means ROUTH stability criterion works which a vector which represent the values of the characteristic coefficients equation of denominator in transfer function of a system.It is small program with an efficacy algorithm respects the steps mentioned in the method and...


Platforms: Matlab

This function gets the nomograph which shows the relationship between the wavelength, wave period and water depth using the dispersion equation.0. Syntax:>> wavelenvsth1. Inputs: None.2. Outputs: Nomograph.3. Example: >> run(wavelenvsth) 4. Notes:- It's only necessary to run the function.- In the...


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

AcouSTO (Acoustic Simulation TOol) is a low-order BEM code to solve the Kirchhoff Integral Equation. An arbitrary number of scattering/radiating bodies, monopoles, and plane waves is allowed. Runs in parallel on MPI2-equipped clusters.


Platforms: Mac, Linux

The code uses the SRK EOS written for a single component to plot isotherms, compute gas and liquid molar volumes and to plot vapor pressure versus temperature for ethane.Please visit these links for a paper by Z. Nasri and H. Binous where all equations are given as well as the same calculations...


Platforms: Matlab

This function solves the linear fractional-order differential equations (FODE) with constant coefficients. The short memory principle has not neen used here, so the length of input signal is limited to few hundred samples. The parameters of the FODE (in its standard form) are the inputs of this...


Platforms: Matlab

The method uses finite differences to solve Laplace equation and matrix inversion to solve the resulting system of linear algebraic equations. The rectangular plate has both dimensions set equal to unity. Each dimension is discretized and the total number of nodal points is equal to 29*29. To...


Platforms: Matlab

NBODYVECT - Fully vectorized n-body equationnbodyVect(x0,dx0,mus,t) integrates the n-body equations of motion using either a symplectic second order integrator, or any of the standard built-in or user supplied first order integrators. x0 - 3n x 1 stacked initial position vectors:...


Platforms: Matlab

This is a Simulink Model Code of a guinea-pig ventricular action potential published byFaber GM, Silva J, Livshitz L, Rudy Y. Kinetic properties of the cardiac L-type Ca2+ channel and its role in myocyte electrophysiology: a theoretical investigation.Biophys J. 2007 92:1522-1543.The action...


Platforms: Matlab

This block for Simulink provides a chirp source for stimulating unknown system dynamics. The block has been developed specifically for the purpose of system identification, however it should be of interest to anyone looking for a robust and flexible chirp function. The chirp function is modelled...


Platforms: Matlab

The model simulates buck converter using different approaches. Parameters can be change from the initializing callback function in the model properties. First circuit implements buck using a MOSFET and diode, second implements using two MOSFETs and third implements using the model equation. Power...


Platforms: Matlab

The enclosed files provide a nonlinear algorithm for controlling dynamical systems, particularly in regimes where linear control methods often fail, such as the targeting of states that are distant in phase space from the system dynamics (e.g., a fixed point at the center of a limit cycle). Four...


Platforms: Matlab

It is Time Reversal simulation in Matlab. Black circle is obstacle. Trialgle is detected obstacle position, red points is transmitters/receivers. It is 2d wave equation solution. Borders absorbs waves but not ideally so small reflection from borders exist. The waves are reflected from obstacle....


Platforms: Matlab

Simple example of the use of the FMINSEARCH function to fit the blackbody equation to the emission spectrum of an incandescent body for the purpose of estimating its color temperature and emissivity. fitblackbody.m is the fitting function. BlackbodyDataFit.m is a script that fits a small set of...


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

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

In this paper i try to associate a linear dynamical system dX/dt=AX to the PDE wave equation.So i discretize the space to step h,and set the limited develpment.it is well application also for spherical wave.J.C Willems gives good standing from ODE to PDE,and From PDe to ODE.


Platforms: Matlab

We use the genetic algorithm (gatool) to determine the three parameters of the simple Antoine equation and the six parameters of the Modified Antoine Model. Predictions are in perfect agreement with experimental data of vapor pressure of ethanol versus temperature for a temperature range from...


Platforms: Matlab