2011 Fiscal Year Final Research Report
Large Eddy Simulation for Turbulent Flow of non-Newtonian Fluid
| Project/Area Number |
21760122
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Fluid engineering
|
|---|
| Research Institution | University of Fukui |
|---|
Principal Investigator |
OHTA Takashi 福井大学, 大学院・工学研究科, 講師 (10273583)
|
|---|
| Project Period (FY) |
2009 – 2011
|
| Keywords | 非ニュートン流体 / 壁乱流 / 直接数値シミュレーション / 乱流変調 / 乱流モデル / ラージエディシミュレーション |
|---|
| Research Abstract |
To develop a large-eddy simulation(LES) method for non-Newtonian fluid such as surfactant solution, we performed direct numerical simulations(DNS) of turbulent channel flow and investigated features of wall turbulence of non-Newtonian fluid. As a result, we found, due to a scale analysis from a viewpoint of instantaneous structures and turbulence statistics, that the turbulent structures of non-Newtonian fluid could be generally normalized with the local variable viscosity as well as the case of Newtonian fluid. We suggested a modified model for LES and validated the reliability for turbulent flow of surfactant solution.
|
