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 The information provided may be out of date.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.
Can't edit equation system
Posted 2012年5月28日 GMT-4 16:19 Version 4.2a 1 Reply
Please login with a confirmed email address before reporting spam
Hi, all
I'm trying to modify some terms in equation system. I can input expressions I need. However, they automatically change to some strange expressions when I go back to check them after leaving the page. These automatically generated expressions are not the default ones either. Many redundant items and parentheses appear, such as ((((Jy)+(emw.Jiy))+(emw.Jdy))+(emw.Jiy))+(emw.Jdy).
Does anyone know how I can stop this strange thing?
Thanks!
I'm trying to modify some terms in equation system. I can input expressions I need. However, they automatically change to some strange expressions when I go back to check them after leaving the page. These automatically generated expressions are not the default ones either. Many redundant items and parentheses appear, such as ((((Jy)+(emw.Jiy))+(emw.Jdy))+(emw.Jiy))+(emw.Jdy).
Does anyone know how I can stop this strange thing?
Thanks!
1 Reply Last Post 2012年6月3日 GMT-4 03:17
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
Feedback
I finally get around the problem, but still don't know why this happens.
For example, the default expression is Expr. What I'm trying to input is Expr1 + Expr. If I input Expr1 + Expr, later when I come back to the equation system edit page, they will become something like (Expr1 + Expr) + Expr. Then I just input Expr1, it automatically changes to (Expr1) + Expr, which is the correct one.
However, this trick does not work for an arbitrary expression.
I finally get around the problem, but still don't know why this happens.
For example, the default expression is Expr. What I'm trying to input is Expr1 + Expr. If I input Expr1 + Expr, later when I come back to the equation system edit page, they will become something like (Expr1 + Expr) + Expr. Then I just input Expr1, it automatically changes to (Expr1) + Expr, which is the correct one.
However, this trick does not work for an arbitrary expression.