Plotting grids and maps of isosurfaces (i)

Suppose we want to solve the two dimensional equation :

Model equation

The exact solution of this equation is given by :


We could use two maps of isosurfaces: one for the calculated solution, another for the exact solution. We will also generate a plot of the grid nodes, with the initial conditions. The initial and the four boundary conditions are chosen to be the exact solution.

Theory pages:
Main page
FEM (i)
FEM (ii)
FDM (i)
Example pages:
1-d Heat Equation
2-d steady state Heat Equation
2-d Heat Equation
1-d non diffusive transport equation
1-d diffusive transport equation
2-d Non diffusive transport equation
Mesh generation with OOCSMP
Moving grids
Application pages:
Heating of two beams
Heating of two moving beams
Solving the equation Ut+Uxx+Uxy+Uyx=0
Solving the equation Ut+Uxx+Uxy+Uyx=0 using MGEN
Heat 1d using several outputs
Solving the Heat equation with a CA
Comparing a CA with the FEM
Gordon's sine equation

Other courses
Other pages

Last modified 22/12/99 by Juan de Lara (, need help for using this courses?.

The OOCSMP code - The SODA code