How squareg works ?
22 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Pavel M
am 5 Jun. 2019
Bearbeitet: Ravi Kumar
am 6 Jun. 2019
I want to create a model by geometryFromEdges(model,@squareg) but i need other sizes of square. @squareg creates 1x1, but i want 0.6x0.6.
Could anybody help me understand what i need to change in squareg. I look code by using
type squareg
I know that any square is created in PDE TOOLbox and exported in workspace and i can use
geometryFromEdges(model,g)
but then i created mesh by
generateMesh(model,'Hmax',0.05,'GeometricOrder','Linear');
and that mesh is less, and even if i decrease Hmax, i get more unstable solutions of PDE in comparison if i used geometryFromEdges(model,@squareg) and then created mesh.
0 Kommentare
Akzeptierte Antwort
Ravi Kumar
am 6 Jun. 2019
Bearbeitet: Ravi Kumar
am 6 Jun. 2019
Hi Pavel,
I don't fully understand your question, but I can answer a portion on how to create square of different size. You can use decsg to create geometry using coordinate information.
Here is a small example for creating square with 0.6 as edge length.
% Coordinates
lowerLeft = [0 ,0 ];
lowerRight = [0.6 , 0 ];
upperRight = [0.6 , 0.6];
upperLeft = [0.0 , 0.6];
% Geometry matrix
S = [3,4 lowerLeft(1), lowerRight(1), upperRight(1), upperLeft(1), ...
lowerLeft(2), lowerRight(2), upperRight(2), upperLeft(2)];
gdm = S';
% Names
ns = 'S';
% Set formula
sf = 'S';
% Invoke decsg
g = decsg(gdm,ns,sf');
% Import g into model using geometryFromEdges.
model = createpde;
geometryFromEdges(model,g);
pdegplot(model,'EdgeLabel','on');
Regards,
Ravi
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Geometry and Mesh finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!