Basic question in coding

sjohn2 · November 7, 2019, 12:19

What does the & operator do in this line of code:
volScalarField gh("gh", (g & mesh.C()) - ghRef);

g is the gravity fied, mesh.C() is the volVectorField and ghRef is a scalar.

Also while learning the coding part of OpenFoam, which part of the C++ programming should I focus on?

clapointe · November 7, 2019, 13:36

The inner product -- see e.g. https://pingpong.chalmers.se/public/...gramming-1.pdf.

Caelan

sjohn2 · November 7, 2019, 13:42

Thanks,

Basically you are taking a dot product of a vector with a volVectorfield, so does openFoam automatically multiplies the one vector with the vector in each of the control volume?

November 7, 2019, 12:19	Basic question in coding	#1
sjohn2 Member Stanley John Join Date: Sep 2018 Posts: 79 Rep Power: 7	What does the & operator do in this line of code: volScalarField gh("gh", (g & mesh.C()) - ghRef); g is the gravity fied, mesh.C() is the volVectorField and ghRef is a scalar. Also while learning the coding part of OpenFoam, which part of the C++ programming should I focus on?

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November 7, 2019, 13:36		#2
clapointe Senior Member Join Date: Aug 2015 Posts: 494 Rep Power: 14	The inner product -- see e.g. https://pingpong.chalmers.se/public/...gramming-1.pdf. Caelan

November 7, 2019, 13:42		#3
sjohn2 Member Stanley John Join Date: Sep 2018 Posts: 79 Rep Power: 7	Thanks, Basically you are taking a dot product of a vector with a volVectorfield, so does openFoam automatically multiplies the one vector with the vector in each of the control volume?