Insulation

Insulation - Set up as solve block? - Messages

#21 Posted: 3/23/2018 1:08:48 PM
Martin Kraska

Martin Kraska

1222 likes in 2150 posts.

Group: Moderator

In short: Clear the unknown variable first: Clear(T.2)=

The equation you are solving for is evaluated in the current context (all known definitions are substituted). In your FindRoot-Example, the variable T.2 which you are solving for, already has a value (just type T.2 to see it). Thus, after substitution, your equation doesn't contain the variable any more.

This is a typical mistake in equation solving. Always make sure that your unknowns are indeed unknown. This is also explained in my example upstream the topic.
Martin Kraska Pre-configured portable distribution of SMath Studio: https://en.smath.info/wiki/SMath%20with%20Plugins.ashx
#22 Posted: 3/23/2018 1:42:08 PM
Jean Giraud

Jean Giraud

983 likes in 6866 posts.

Group: User

Wrote

OK, going back to sanity check some values.



As it looks: A US standard of mild temperature.
1srt thing to: give the link to the standard.
#23 Posted: 3/23/2018 2:16:01 PM
Ruben Sidranski

Ruben Sidranski

17 likes in 463 posts.

Group: User

Wrote

In short: Clear the unknown variable first: Clear(T.2)=



ClearT2.PNG
  • New Posts New Posts
  • No New Posts No New Posts