in MATLAB PDE Toolbox App, I've multiple objects (Rectangular shaped) in one file. For multiple objects I'd like to specify the PDE coefficients differently. How can I specify the different PDE coefficients for different objects.
4 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Md Shahidul Alam
am 8 Jul. 2015
Kommentiert: Alan Weiss
am 13 Jul. 2015
As an example, I have 3 rectangular shaped objects. They share the boundary with each other. I'd like to calculate the heat transfer equation for 3 different objects. The heat source,Q is different for different objects e.g Q = [10;20;30]. So using PDE Toolbox GUI, how can I set the value ?
0 Kommentare
Akzeptierte Antwort
Alan Weiss
am 9 Jul. 2015
After you have drawn your rectangles, select PDE > PDE Mode. Then double-click each rectangle to enter its coefficients.
Alan Weiss
MATLAB mathematical toolbox documentation
Weitere Antworten (1)
Md Shahidul Alam
am 9 Jul. 2015
1 Kommentar
Alan Weiss
am 13 Jul. 2015
The equation that the PDE Toolbox solves is displayed above the coefficients in the PDE Specification dialog box:
-div(K*grad(T)) = Q + h*(Text - T)
where T = temperature, k = coeff. of heat conduction, Q = heat source, h = convective heat transfer coeff., and Text = external temperature.
In the Boundary Condition dialog box, the Neumann boundary conditions are
n*k*grad(T) + q*T = g
where g = heat flux and q = heat transfer coefficient.
In summary, Q is a coefficient of the PDE, and g is a Neumann boundary condition term.
Alan Weiss
MATLAB mathematical toolbox documentation
Siehe auch
Kategorien
Mehr zu Boundary Conditions 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!