Abstract
In order to improve the heat transfer on the wall, impinging jets is used in various industrial applications, and has been investigated experimentally and numerically so far. However, it is not enough to make clear the detail of vortical structure contributing to the heat transfer. In the present paper, DNS (direct numerical simulation) of the impinging jet is conducted to investigate the heat transfer through the nozzle vector control. The discretization in space are performed with hybrid scheme in which Fourier spectral and 6th order compact scheme are adopted. From instantaneou view of flow structures, it is found that the vortex structure is changed significantly on the wall. In addition, From the statistical it is found that flow properties and the heat transfer are improved using the vector control.
