  We demonstrate a novel computational architecture based on fluid convection
logic gates and heat flux-mediated information flows. Our previous work
demonstrated that Boolean logic operations can be performed by thermally-driven
convection flows. In this work, we use numerical simulations to demonstrate a
different, but universal Boolean logic operation (NOR), performed by simpler
convective gates. The gates in the present work do not rely on obstacle flows
or periodic boundary conditions, a significant improvement in terms of
experimental realizability. Conductive heat transfer links can be used to
connect the convective gates, and we demonstrate this with the example of
binary half addition. These simulated circuits could be constructed in an
experimental setting with modern, 2-dimensional fluidics equipment, such as a
thin layer of fluid between acrylic plates. The presented approach thus
introduces a new realm of unconventional, thermal fluid-based computation.
