Stack Overflow
Stack Overflow

Questions tagged [pde]

Use this tag for questions about partial differential equations. For questions about the Eclipse Plugin Development Environment, use eclipse-pde instead.

Partial Differential Equations are differential equations that contain unknown multivariable functions and their partial derivatives. See [http://en.wikipedia.org/wiki/Partial_differential_equation][1]

The Eclipse Plug-in Development Environment (PDE) provides tools to create, develop, test, debug, build and deploy Eclipse plug-ins, fragments, features, update sites and RCP products. PDE also provides comprehensive OSGi tooling. See [http://www.eclipse.org/pde/][2]

Questions about the Eclipse Plug-in Development Environment are better tagged as 'eclipse-pde'.

See

Partial_differential_equation

Eclipse Plug-in Development Environment

477 questions
2
votes
1 answer

OpenModelica solving a PDE Initialization error

I'm trying to use OpenModelica to numerically solve a very simple PDE du/dx=du/dt with boundary condition u(0,t)=t^2 and u_x(0,t)=0. I have written the code below: model pdetest_1 parameter Real L=1; parameter Integer N=100; parameter…
Foad S. Farimani
  • 12,396
  • 15
  • 78
  • 193
2
votes
1 answer

Eclipse Plugin Dev: IProject and IFile cannot be resolved to a type. ? Where is the lib for this?

I've started research on developing for Eclipse. My intention is to make a suite to aid in the development of my custom game library. I have successfully created a "Hello World" example and am able to run successfully. I am adding to the project to…
user1201763
  • 45
  • 5
2
votes
0 answers

Solving PDE with methods of lines

I'm trying to solve numerically a parabolic type of Partial differential equation(PDE): u't=u''xx-u(1-u)(0.3-u) with Neumann boundary conditions and a step like function as an initial condition. Expected plot result is here It may be a bit…
Ren
  • 944
  • 1
  • 13
  • 26
2
votes
1 answer

Adding licensing support for Eclipse PDE

I have built an eclipse plugin which basically makes writing Java GUI applications as easy as using a 4GL programming language (Oracle Forms, Visual Basic etc). The plugin generates no GUI code but rather metadata which is parsed at runtime. I am…
Paul
  • 21
  • 1
2
votes
1 answer

Manipulating advection coefficient in Fipy: Advection Diffusion Equation

I am trying to solve advection-diffusion equation in python using fipy. I would like to manipulate the convection coefficient so that it point at the center of the domain. My code is from fipy import * # Setting mesh and discretising space nx =…
Irbin B.
  • 382
  • 3
  • 18
2
votes
0 answers

Matlab; Partial Differential Equation; ODE

I am currently trying to solve a Matlab problem. For the first part, I need to hand solve Partial Differential Equation with initial and boundary condition. However, I am lost because I don't know how to continue solving the problem after I find the…
Jessica Z
  • 21
  • 1
2
votes
1 answer

How should I write these coupled PDE's in FiPy?

I'm trying to implement a phase field solidification model of a ternary alloy using FiPy. I have looked at most of the phase field examples provided on FiPy's website and my model is similar to examples.phase.quaternary. The evolution equation for…
A. Ericsson
  • 21
  • 1
2
votes
0 answers

How do I solve equations using the Scharfetter-Gummel scheme in FiPy?

I'm trying to use FiPy to simulate solar cells but I'm struggling to get reasonable results even for simple test cases. My test problem is an abrupt 1D p-n homojunction in the dark in equilibrium. The governing system of equations are the…
jmball
  • 31
  • 4
2
votes
3 answers

How do you specifiy a Neumann (fixed flux normal to face) boundary condition in Fipy?

How do I explicitly set the flux normal to a boundary face in a fipy mesh to be a specific value, without constraining components of flux within the face? A Neumann boundary condition can be specified as: (1) fixed component of flux normal to a…
Rupert
  • 31
  • 5
2
votes
1 answer

Translating PDEs into proper Fipy syntax

I was wondering how to code the following equation in FiPy: (In case anyone is curious, it comes from this type of model). I'm having a little trouble translating the third term on the right side into FiPy code. In the example, A and B are both…
Snakelet
  • 43
  • 5
2
votes
1 answer

run pde file in eclipse

What is the language of .pde file? Is it C or java? I want to run these files of code. This file has an error because width and height variables are not initialized. I want to know whether I run this code in Processing Development Environment if I…
any
  • 325
  • 5
  • 17
2
votes
1 answer

Solving multiple PDEs in Fipy

I'm trying to solve a system of partial differential equations in Python, using Fipy. I have a system of at least 3 PDEs. I was wondering which approach is best for solving such a system? Fipy supports both coupled and uncoupled approaches for…
Snakelet
  • 43
  • 5
2
votes
1 answer

How to use a variable coefficient in PDE Toolbox to solve a parabolic equation (Matlab)

I will try to explain my doubt in the better way possible: I'm trying to solve the reaction-diffusion equation with PDE Toolbox (Matlab), the syntax to get the solution (u) is: parabolic - Solve parabolic PDE problem This MATLAB function produces…
Pablo Díaz
  • 21
  • 3
2
votes
1 answer

1D Heat Diffusion PDE implementation in Modelica(Dymola)

I was trying to implement a 1D heat diffusion example from the Peter Fritzon's "Object Oriented Modeling and Simulation with Modelica 3.3" based on the Grid Function Finite Difference Approach to 1D Heat Diffusion but I am getting an…
John_3265
  • 71
  • 6
2
votes
0 answers

How to share a common customBuildCallbacks script between multiple Eclipse plug-ins

I am trying to avoid duplicating customBuildCallbacks.xml for all my plug-ins, when called from either PDE's headless build or the Eclipse GUI. I have in customBuildCallbacks.xml steps to generate code or modify the plug-in packaging that…
Romain Castell
  • 21
  • 2
1 2 3
…
31 32