Construction of LES Model based on DNS Analysis of High Mach Number Multiphase Flow

2014 Fiscal Year Final Research Report

• Project/Area Number: 24656522
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Aerospace engineering
• Research Institution: Tokai University
• Principal Investigator: KOTA Fukuda 東海大学, 工学部, 准教授 (60401684)
• Co-Investigator(Kenkyū-buntansha): NONOMURA Taku 独立行政法人宇宙航空研究開発機構, 宇宙科学研究所, 助教 (60547967) ; TAKAHASHI Shun 東海大学, 工学部, 講師 (60553930)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 高マッハ数混相乱流 / 音響 / ＤＮＳ / ＬＥＳ

Outline of Final Research Achievements

In this study, high-Mach-number and low-Reynolds-number flow around a sphere was numerically calculated by direct numerical simulation (DNS) of the three-dimensional compressible Navier-Stokes equations, for the construction of the the large-eddy simulation model. Two schemes based on boundary fitted coordinate system and Immersed Boundary Method were newly developed. The effects of Mach number, Reynolds number, and temperature ratio on the flow properties, drag coefficient, and Nusselt number were examined from the calculation results. The flow characteristics that are required for the construction of the LES model.

Free Research Field

流体工学、音響工学、渦流れ