Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
error in geometry: undefined function or variable 'rect2'
Posted Feb 17, 2011, 1:37 p.m. EST Geometry Version 3.5a 1 Reply
Please login with a confirmed email address before reporting spam
Dear Friends,
can someone help me out to evaluate my problem?
I am a beginner in comsol software and i have to accomplish a small task.
i have generated an m-file from the tutorial model - piezoaccoustic.m ( 'piezoaccoustic_transducer.mph' ).
I want to replace the geometry dimensions by user defined variables in MATLAB-GUIDE. Hence, user can easily change the dimension of the geometries whenever he wants.
In doing so, i assigned each dimension to a variable and replace the properties of geometry objects with this variables.
example:
but, when i try to run this m-file , i get the following error several times.
Java exception occurred:
Exception:
com.femlab.jni.FlNativeException: Unknown variable name
Messages:
Unknown variable name
- Name: k
Stack trace:
at evalconst.cpp, row 134, ()
at com.femlab.util.EvalConst.eval(Native Method)
at com.femlab.util.EvalConst.eval(Unknown Source)
at com.femlab.geom.Rect.a(Unknown Source)
at com.femlab.geom.Prim2.<init>(Unknown Source)
at com.femlab.geom.Rect.<init>(Unknown Source)
.
Error in ==> rect2.rect2 at 92
jptr=com.femlab.geom.Rect(2,prop);
can someone help me to resolve it.?
can someone help me out to evaluate my problem?
I am a beginner in comsol software and i have to accomplish a small task.
i have generated an m-file from the tutorial model - piezoaccoustic.m ( 'piezoaccoustic_transducer.mph' ).
I want to replace the geometry dimensions by user defined variables in MATLAB-GUIDE. Hence, user can easily change the dimension of the geometries whenever he wants.
In doing so, i assigned each dimension to a variable and replace the properties of geometry objects with this variables.
example:
but, when i try to run this m-file , i get the following error several times.
Java exception occurred:
Exception:
com.femlab.jni.FlNativeException: Unknown variable name
Messages:
Unknown variable name
- Name: k
Stack trace:
at evalconst.cpp, row 134, ()
at com.femlab.util.EvalConst.eval(Native Method)
at com.femlab.util.EvalConst.eval(Unknown Source)
at com.femlab.geom.Rect.a(Unknown Source)
at com.femlab.geom.Prim2.<init>(Unknown Source)
at com.femlab.geom.Rect.<init>(Unknown Source)
.
Error in ==> rect2.rect2 at 92
jptr=com.femlab.geom.Rect(2,prop);
can someone help me to resolve it.?
1 Reply Last Post Feb 17, 2011, 4:07 p.m. EST
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
Hi
I can probably not resolve it like that, but one thing that made me make many "strange mistakes" in the beginning was a naming violation with the internal COMSOL names already in use. Could it be that you are using k for you and its in collision with an internal use of k by COMSOL ?
--
Good luck
Ivar
I can probably not resolve it like that, but one thing that made me make many "strange mistakes" in the beginning was a naming violation with the internal COMSOL names already in use. Could it be that you are using k for you and its in collision with an internal use of k by COMSOL ?
--
Good luck
Ivar