| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| 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.
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