2010 Fiscal Year Final Research Report
Collisions of inertial droplets in high Reynolds number flow
| Project/Area Number |
21760143
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Fluid engineering
|
|---|
| Research Institution | Japan Agency for Marine-Earth Science and Technology |
|---|
Principal Investigator |
ONISHI Ryo Japan Agency for Marine-Earth Science and Technology, 地球シミュレータセンター, 研究員 (30414361)
|
|---|
| Project Period (FY) |
2009 – 2010
|
| Keywords | 混相流 / 豪雨予測 / 粒子衝突 / 直接数値計算 / 大規模並列計算 / 雲乱流 |
|---|
| Research Abstract |
A high-performance parallel code for particle-immersed turbulence has been developed to investigate turbulent collisions of inertial particles in air turbulence. The code adopts our original forcing method, named reduced communication forcing, to achieve a stationary state. The code has enabled us to obtain the statistics concerning turbulent collision frequency in as high as Re_λ=340, where Re_λ is Taylor microscale based Reynolds number. This data has revealed that a conventional collision frequency model underestimates turbulent collision frequency in high Re_λ flows.
|
Research Products
(7 results)
