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-   -   2nd order Tensor Divergence Mistake in Programmerbs Guide (https://www.cfd-online.com/Forums/openfoam/61014-2nd-order-tensor-divergence-mistake-programmerbs-guide.html)

vvqf November 25, 2005 08:32
page P-28 equation (2.5) sho
 
page P-28
equation (2.5)
should it be : dTij/dxj ?
dT11/dx1 + dT12/dx2 + dT13/dx3
dT21/dx1 + dT22/dx2 + dT23/dx3
dT31/dx1 + dT32/dx2 + dT33/dx3

vvqf November 28, 2005 10:24
confused now: 1. http://astr
 
confused now:
1.
http://astron.berkeley.edu/~jrg/ay202/node185.html
same as above

2.
http://tam.cornell.edu/TAM610notes2.pdf
says
div(T) = dTij/dxi ?

Could anybody so kind to give an answer for sure?
Should I believe our Programmer's Guide? -- please forgive me for asking this question.

vvqf December 2, 2005 04:17
i think div(T)should it be dTi
 
i think div(T)should it be dTij/dxj, which is a vecotr.

chris December 2, 2005 04:53
div(T) = dTij/dxi = dTji/dxj
 
div(T) = dTij/dxi = dTji/dxj


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