| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
|
|---|
| Outline of Final Research Achievements |
Turbulence is composed of a hierarchy of coherent vortices. Solid particles are affected by these multiple-scale vortices and form multiple-scale clusters in turbulence. In previous studies, particles were treated as point-wise ones, while we conduct direct numerical simulations of finite-size particles in turbulence by using the immersed boundary method so that we can reveal effects of the finiteness of particle size. We have shown details of the hierarchy of vortices and the finite-size effects of particles on the interaction between particles and vortices. The results are qualitatively reasonable. However, we have also shown the quantitative problems of the numerical algorithm adopted in the present study. Nevertheless, we have constructed the foundation for future studies on this challenging problem on the interactions between fluid turbulence and solid particles.
|
