Simultaneous mapping of buoyancy-induced flow and temperature fields using thermographic PIV

We report one of the first experimental investigation on simultaneous mapping of whole field temperature and velocity data to demonstrate the potential of thermographic PIV (or LIP/PIV) in the context of natural convection for a back-wall heated open square cavity. As part of the validation exercise, LIP/PIV-based results are compared with corresponding numerically simulated and interferometry-based whole field data. The study holds its importance as it successfully captures the flow physics associated with the buoyancy-driven convective phenomena in the cavity at varying temperature differences using a single imaging technique instead of two separate sets of optical diagnostics.