乱流予混合燃焼DNSに基づくκとε輸送方程式の検討(オーガナイズドセッション6 乱流燃焼研究の最前線)

Abstract

We have modeled the combustion-related terms in the transport equation of the turbulent kinetic energy for turbulent premixed combustion. In this paper, the modeling of diffusion terms was discussed to close the κ-equation. The turbulent diffusion, pressure diffusion and viscous diffusion terms were modeled together as a gradient diffusion type model. And the diffusion model was compared with diffusion terms estimated from DNS data of turbulent premixed flames, where the model constants were applied general experimental values. Then this result predicts that the experimental model constants are acceptable for κ-equation model of the turbulent premixed combustion.