Dimensionless quantities

badri1979 · August 22, 2006, 09:24

Hi All, I am new to OF so bear with some of my silly questions.

How do I input dimensionless quantities in the code For e.g. Prandtl number. The one for dimensioned quantities is

dimensionedScalar nu
(
transportProperties.lookup("nu")
);

grtabor · August 22, 2006, 17:47

Well, a dimensionless number is just a dimensioned one with dimension set [0 0 0 0 0 0 0]. This would be particularly appropriate if you want to manipulate the Prandtl number in conjunction with other dimensioned quantities. Otherwise, you need to use the function readScalar, IIRC.

Gavin

August 22, 2006, 09:24	Hi All, I am new to OF so bear	#1
badri1979 New Member Badri Velamur Asokan Join Date: Mar 2009 Location: Oak Ridge, TN Posts: 7 Rep Power: 17	Hi All, I am new to OF so bear with some of my silly questions. How do I input dimensionless quantities in the code For e.g. Prandtl number. The one for dimensioned quantities is dimensionedScalar nu ( transportProperties.lookup("nu") );

August 22, 2006, 17:47	Well, a dimensionless number i	#2
grtabor Senior Member Gavin Tabor Join Date: Mar 2009 Posts: 181 Rep Power: 17	Well, a dimensionless number is just a dimensioned one with dimension set [0 0 0 0 0 0 0]. This would be particularly appropriate if you want to manipulate the Prandtl number in conjunction with other dimensioned quantities. Otherwise, you need to use the function readScalar, IIRC. Gavin

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