DNSによる衝突噴流の能動制御(乱流現象の制御(2),一般講演)

概要

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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 in order to investigate the heat transfer through the control of vortical structure. The discretization in space are performed with hybrid scheme in which Fourier spectral and 6th order compact scheme are adopted. As the control parameter, two cases of perturbations are imposed on the inflow boundary conditions. The detailed flow characteristic on wall are demonstrate, and the effect of control is discussed based on the statistical quantities and the visualized vortical structures.
日本流体力学会の論文
2007-08-06