Hi WASY,
I read this post on the topic:
[url=http://www.feflow.info/forum/index.php?topic=409.0]http://www.feflow.info/forum/index.php?topic=409.0[/url]
The author of the post asks the same question but it appears that Peter Schätzl refers to hydraulic conductivity in his answer (which also is consistent with the formula displayed under Reference Temperature).
Does FEFLOW (also) consider the temperature dependence of [u]thermal[/u] conductivity?
Best regards,
Søren