The Numerical Analysis of the Trajectory and Landing Location of YSZ Droplets Impinging the Microtextured Substrate

Abstract This work considers the possibility of controlling thermally sprayed TBC columnar microstructure using metallic bond coat microtexturization prior to ceramic top spraying. Such pretreated has been modeled investigate influence substrate topography on behavior plasma stream and resulting movement feedstock particles in closest proximity substrate. The analysis considered microscale computational domain. It was extracted from entire spraying domain located microtextured boundary layer at three different distances jet centerline. Advanced flow models were used here define jet/feedstock droplet interaction heat flux YSZ discrete phase model with a DPM source particle drag law introduced governing equations. Then, deposition conditions investigated considering effect distance concluded that intensity shadowing determines build-up mechanism depending landing location motivation behind this study microtexturing layer. opens better understanding coating build-up, strictly such TBCs, improving their overall performance.