Development of Multi-Scale Large Eddy Simulation Based on Velocity Reconstruction by Vortex Elements on the Domain Interfaces

2014 Fiscal Year Final Research Report

• Project/Area Number: 24760166
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Thermal engineering
• Research Institution: Kansai University (2014); Osaka University (2012-2013)
• Principal Investigator: ODA YUTAKA 関西大学, システム理工学部, 准教授 (50403150)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 乱流伝熱の数値予測

Outline of Final Research Achievements

In this study, a numerical simulation method for predicting complex turbulent heat transfer fields was developed based on a LES (Large Eddy Simulation) method. Contrary to my initial expectations, the development of a velocity reconstruction method, which is based on vortex elements near the domain interfaces, was not accomplished perfectly. Instead, a multi-block LES method was newly developed based on three-dimensional interpolation techniques. By applying this method, a new concept of turbulent flow simulation, “concurrent simulation” was proposed and developed. The concurrent simulation technique was applied to investigate the effect of a slight change in the shape of turbulence promoters on the resultant turbulent heat transfer fields downstream the turbulators under the completely same fluctuating inflow fields for each turbulator.

Free Research Field

熱流体工学