2013 Fiscal Year Final Research Report
Compressible flow dynamics and heat transfer control of helium near the critical point
| Project/Area Number |
23760197
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Thermal engineering
|
|---|
| Research Institution | High Energy Accelerator Research Organization |
|---|
Principal Investigator |
OKAMURA Takahiro 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 准教授 (90415042)
|
|---|
| Project Period (FY) |
2011 – 2013
|
| Keywords | 臨界点近傍 / ヘリウム / 乱流 / 直接数値計算 / GPGPU / 渦構造 / 乱流遷移 |
|---|
| Research Abstract |
In this study, direct numerical simulations were mainly performed in order to clarify laminar-turbulent transition process, vortical structures in the boundary layer and characteristics of mean field and fluctuation field in the supercritical helium near the gas-liquid critical point. Not only open system which means isobaric system but also closed system are considered in this study. In the case of the closed system, not only convection but also piston effect simultaneously occurs in the system. The simulations are performed by means of GPGPU (TESLA C2075) and CUDA 4.2 architecture are employed. These results will be applied to establishment of turbulent control and turbulent model construction for the helium near the critical point in order to predict the fluid flow phenomena and to control actual cooling channel of large scale superconducting magnet system.
|
