Divergence of a tensor vector product

[desmal]

can anybody tell me the expansion for the divergence of tensor vector product
$$\nabla.(\tilde{K}.\vec{b})$$
for the case of scalar and vector the expansion is given by
$$\nabla.(a\vec{b})=a\nabla.\vec{b}+\vec{b}.\nabla a$$

 

[tiny-tim]

hi desmal!

you can't have a divergence of a tensor

(well ok, you can have a vector-valued divergence, but only wrt one of the indices: ∂_iK_ib_j)