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#1 |
Member
bojiezhang
Join Date: Jan 2010
Posts: 64
Rep Power: 16 ![]() |
hello everyFoamer:
I have two problems, and hope someone can help me, 1:when I use the function below: Foam::cos( -omega*runTime.value()) the dimension of omega is[0,0,-1,0,0,0,0], It can compile pretty well, but when caculating, the error comes as below: ds not dimensionless From function cos(const dimensionedScalar& ds) 2:when I assign the value as below: mass[cellI] =A*omega*Foam::cos(-omega*runTime.value()); mass is volScalarField , and intialized as dimensionedScalar("zero", dimensionSet(0,1,-1,0,0,0,0), 0.0) the dimension of A is [0,1,0,0,0,0,0],the dimension of omega is[0,0,-1,0,0,0,0], when compiled , it shows "error":can not convert dimensioned<double> to double ; what can I do , I really hope someone can give me some advice, thank you in advance! bojiezhang |
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#2 |
Senior Member
Nima Samkhaniani
Join Date: Sep 2009
Location: Tehran, Iran
Posts: 1,266
Blog Entries: 1
Rep Power: 24 ![]() |
1) define omega as dimless , because when u use the value() function, it only returns the value of run time not its dimension!
2) its not important whats the dimension of volScalarField is, when you use just on array of it! its a scalar with out dimension so the left side should be dimensionless too, but ur left side is not dimension less, its an strange combination of [0 0 1 0 0 0 0]* cos [0 0 -1 0 0 0 0] for compiler, so define A as dimless too then congratulation ![]() |
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#3 | |
Member
bojiezhang
Join Date: Jan 2010
Posts: 64
Rep Power: 16 ![]() |
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