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[ff3d-users] new problems
From: |
Robert Li |
Subject: |
[ff3d-users] new problems |
Date: |
Wed, 21 Jan 2004 16:44:28 -0800 (PST) |
Dear Stephane Del Pino,
I have new problems with ff3d.
1.In parse.ff.yy, you used abs(), because class
ExpressionStdFunction needs a real function
pointer,should we change it into fabs()?
| ABS '(' functionexp ')'
{
$$ = new
FunctionExpressionUnaryOperator<ExpressionStdFunction<FunctionExpression,
std::abs> >($3);
}
2.In parse.ff.yy, although I can find dx,dy,dz
keywords,I can not find dt keyword. I want to solve a
heat transfer PDE problem. Unknown T is a
function(x,y,z,t). And I need to express
deltT=T[i]-T[i-1]. Could you give me a example about
how to write them in input file?
Thanks,
Robert
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- [ff3d-users] new problems,
Robert Li <=