spatial grid points division

10 views (last 30 days)
Ahmed Abdalazeez
Ahmed Abdalazeez on 18 Jul 2018
Edited: Guillaume on 18 Jul 2018
I have (N = 550) grid points starts from a = 0, to the end point b = 291.5. the spatial grid step is dx = 0.53. I want increase the grids between a and b by decreasing dx, without changing N.
Here the codes i used
N = 550; % number of grid points
x = linspace(a, b, N+1)'; % cell interfaces
dx = x(2) - x(1); % spatial grid step
xc = 0.5*(x(1:end-1) + x(2:end)); % centers of cells
  3 Comments
Ahmed Abdalazeez
Ahmed Abdalazeez on 18 Jul 2018
But I can't change N, because the stability of the solution, otherwise the system will be unstable.
Guillaume
Guillaume on 18 Jul 2018
By definition
dx = (b-a) / N
So again, you can't change dx without changing at least one variable on the other side of the equation.

Sign in to comment.

Answers (0)

Categories

Find more on Statistics and Machine Learning Toolbox in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!