Can we have a heat equation with a negative heat source term? If yes what will be the physical interpretation of negative heat source?

The equation I am considering is given by  \dfrac{\partial T}{\partial t}=\nabla cdot ( \nabla \lambda T))+ (\nabla \cdot v T)+H,  T is  the  temperature,  and  H is  the heat generation rate(...

12 December 2014 10,003 7 View