Spatially-Resolved Maps of Jet Impingement Boiling Heat Transfer
Our previous work includes studying boiling heat transfer from arrays of impinging jets using spatially-resolved measurements with an infrared (IR) camera. The high-resolution maps showed how boiling begins between jets, shown as the small-scale randomness in convection coefficient to the left. The small jets in the array maintained regions of single-phase convection to higher heat fluxes compared to a larger single jet with the same mass flow rate. The knowledge gained from these spatially-resolved measurements directly informed the design of our surface enhancement structures for enhanced boiling. IR measurements provide high resolution, spatially-resolved temperature measurements that have the potential to explain fundamental heat transfer phenomena, for example the detailed convection patterns resulting from a turbulent cross-shaped impinging jet (shown below).
