Effect of the profile of a convergent nozzle on heat transfer distribution of a flat plate impinged by an under-expanded jet

► Influence of convergent profile of nozzle is studied on the heat transfer distribution. ► Distributions of pressure, Local Nusselt number and Recovery factor are presented. ► Effect is observed in the stagnation region and for lower z/d. ► Spatial shift in the pressure distribution and the maximum Nusselt number is reported.