Abstract
We studied experimentally the impingement heat transfer from the circular orifice jet with nano-sized water mists. When the nano-sized water mists with initial velocity was added, the jet was bent and the location of the maximum pressure coefficient and Nusselt number on the target plate was shift from the center of the orifice. And the iso-Nusselt number profile on the target plate became the elliptic shape. However, the enhancement of the heat transfer was not observed, because the local temperature of the free jet corresponding to the place of the target plate was not varied from that without mists.
