Conjugate heat transfer
The
conjugate heat transfer capability allows heat transfer to be solved
implicitly through different materials. The materials may be of fluid or
solid types, all with different properties. Additional resistance to heat
transfer on contact surfaces is also allowed for.
The
two figures below demonstrate a typical application of a counter-flow heat
exchanger. Figure 1 shows the mesh. Only a two-dimensional section across
the flow passage needed to be solved for the current application. The
materials present were water, air, and aluminum. Special pressure boundary
conditions allows fully developed flow to be solved in the two-dimensional
sections. Cyclic (repetitive) boundary conditions allow only a portion of
the full geometry to be solved. Figure 2 shows a temperature profile
across the two-dimensional section. The red regions indicate hot water
while the blue regions indicate
air. The yellow regions in between represent the aluminum.
