how to get the output data file of FEMLAB?

edodo

Hellow!
Any body can tell me how to get the output data of femlab? thanks!

John

edodo

Hello John,

A number of ways:

1) through file>export>postprocessing data will give you a text file containing nodal data of the value you see on the postprocessing plot, for instance a temperature distribution.

2) as “structure” in for instance a COMSOL Script or Matlab environment

3) for postprocessing >domain plot parameters and such: once you have th figure on screen you can “export current plot” into a text file.



Hope this helps!

edodo

Hellow Will:
Thanks for your reply,actually,i 'd like to get all node coordinator
and a value(like temperature) for each element ,i have reviewed all
the properties for postinterp, but i can not find the one for node
coordinator and element,could you please help me?

edodo

If you want to get the coordinate for each node, here's ony way to
do it:

femtemp = fem;
femtemp.appl.equ.init = {'x'};
femtemp = multiphysics(femtemp);
femtemp.xmesh = meshextend(femtemp);
sol = asseminit(femtemp);
node_x = sol.u;
femtemp.appl.equ.init = {'y'};
femtemp = multiphysics(femtemp);
femtemp.xmesh = meshextend(femtemp);
sol = asseminit(femtemp);
node_y = sol.u;

solution_vector = [ node_x node_y fem.sol.u ];

The solution_vector matrix has three columns, column 1 is node X
coordinate, col. 2 is y coordinate, col. 3 is the value at the
nodes. You might also be able to skip the second call to
multihpysics and meshextend.

Walter

tianben

请问如下这段程序应该插入到 .m文件的什么位置？
另外，有时我用matlab编写的一段数据处理及图形输出的程序也不知道该放在 .m文件的什么位置？插入程序段时有规则吗？

原帖由 edodo 于 2006-2-10 16:07 发表
If you want to get the coordinate for each node, here's ony way to
do it:

femtemp = fem;
femtemp.appl.equ.init = {'x'};
femtemp = multiphysics(femtemp);
femtemp.xmesh = meshextend(femtemp);
sol ...

edodo

放在% Solve problem
fem.sol=femlin(fem, ...
               'solcomp',{'u','v'}, ...
               'outcomp',{'u','v'});

这类的求解的后面  这里用的是线性求解器  求解U V 输出U V

tianben

谢谢edodo的回复，
用命令编程确实灵活、方便多了，只可惜上手较难，还需要继续学习。