# dimensionedScalar

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 January 28, 2013, 16:04 dimensionedScalar #1 New Member   Abbas Rahimi Join Date: Jan 2013 Posts: 20 Rep Power: 4 Hello, I'm very new to OpenFOAM and I'm trying to learn this software and modify it for my application. I just bumped to dimensionedScalar which is like this: nu nu[0 2 -1 0 0 0 0] 1; There are three things that I can't understand: 1- What's nu mean? 2- If the values in [..] refer to field property and physics why like for length somewhre power 2 is chosen but other places power 1? 3- What does the last scalar after [...] referred as scalar mean? Thank you so much.

 January 28, 2013, 16:34 #2 Senior Member   Nima Sam Join Date: Sep 2009 Location: Tehran, Iran Posts: 1,123 Blog Entries: 1 Rep Power: 14 hello dear Abbas welcome to forum first i recommend to read userguide , because your questions are so naive, and shows you dont yet look at userguide at all, however 1-nu is mu/rho , it is viscosity 2-????? i dont understand your question but those values in [] are dimensions of your variable for example for velocity (m/s = ms-1) so it would be [0 1 -1 0 0 0 0 .....] 3-its the value you assign to your variable actually nu=1 in your example __________________ Training Course on OpenFOAM at (http://www.isme.ir/) My Weblog (http://openfoam.blogfa.com/)

January 28, 2013, 20:40
#3
New Member

Abbas Rahimi
Join Date: Jan 2013
Posts: 20
Rep Power: 4
Quote:
 Originally Posted by nimasam hello dear Abbas welcome to forum first i recommend to read userguide , because your questions are so naive, and shows you dont yet look at userguide at all, however 1-nu is mu/rho , it is viscosity 2-????? i dont understand your question but those values in [] are dimensions of your variable for example for velocity (m/s = ms-1) so it would be [0 1 -1 0 0 0 0 .....] 3-its the value you assign to your variable actually nu=1 in your example
Hello Nima,

Thank you so much for information. You are right, I need to look deeper into Tutorial...

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