# SNAFU at wwwopencfdcouk on solver page

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 March 30, 2008, 16:08 I'm no expert, but shouldn't t #1 Member   Graeme Cottrell Join Date: Mar 2009 Posts: 30 Rep Power: 10 I'm no expert, but shouldn't the second occurrence of the Greek letter rho in the mathematical equation at http://www.opencfd.co.uk/openfoam/cr...reatingSolvers be instead a Greek letter phi to match the solver code below it on the page? Regards.

 March 31, 2008, 01:31 Hi Graeme, The convective ter #2 Senior Member     Dragos Join Date: Mar 2009 Posts: 649 Rep Power: 13 Hi Graeme, The convective term can formally be written: div(rUU) = div((rU)U) = div(fU) = fvm::div(phi,U) So both, the mathematical expression and the c++ translation of it are correct in the aforementioned webpage.

 March 31, 2008, 02:42 Hi Dragos, I confess that I #3 Member   Graeme Cottrell Join Date: Mar 2009 Posts: 30 Rep Power: 10 Hi Dragos, I confess that I don't know enough to follow that completely, but I'll take your word for it. Regards, Graeme.

 March 31, 2008, 03:48 You don't need to know Fluid M #4 Senior Member     Dragos Join Date: Mar 2009 Posts: 649 Rep Power: 13 You don't need to know Fluid Mechanics for that, it is just a replacement: f = rU Nothing more!

 March 31, 2008, 04:51 So here, phi is a functor repr #5 Member   Graeme Cottrell Join Date: Mar 2009 Posts: 30 Rep Power: 10 So here, phi is a functor representing rU ?

 March 31, 2008, 05:14 Yes it is. #6 Senior Member     Dragos Join Date: Mar 2009 Posts: 649 Rep Power: 13 Yes it is.

 March 31, 2008, 06:27 Thanks for taking the time to #7 Member   Graeme Cottrell Join Date: Mar 2009 Posts: 30 Rep Power: 10 Thanks for taking the time to reply, Dragos. Regards, Graeme.

 March 31, 2008, 06:34 I hope you will like OpenFOAM #8 Senior Member     Dragos Join Date: Mar 2009 Posts: 649 Rep Power: 13 I hope you will like OpenFOAM more and more, and enjoy the discussions on this forum. Dragos

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