Three Dimensional Numerical Analysis of Tunnel Inrushing Wave

• Project/Area Number: 20560488
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Civil engineering project/Traffic engineering
• Research Institution: University of Yamanashi
• Principal Investigator: KITAMURA Toshiya University of Yamanashi, 大学院・医学工学総合研究部, 准教授 (80224971)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2008: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 高速列車 / 低周波音 / 数値解析 / 環境影響 / トンネル突入波 / CIP法シミュレーション

Research Abstract

When a high speed train inrushes a tunnel, pressure wave is emitted around the tunnel entrance as Tunnel Inrushing Wave. An objective of this research is to analysis influences on the emission of the wave by offset between the tunnel centre and rail way and by landform around the tunnel entrance. A three dimensional computer simulation system for analysis the objective was set up with CIP method. A simple model of emission by rush of high speed train into a tunnel was calculated by the system. The system split into fluid analysis system to simulate inrushing of train into tunnel and acoustic analysis system to simulate emission of inrushing wave. A difference of distance attenuation between a theory and results of simulation made clear that the systems have problems in conservation rule.

Research Products

• [Presentation] 2次元圧力波伝播シミュレーションの試み (2010)
  • Author(s): 矢部治貴、佐野太洋、北村敏也
  • Organizer: 日本機械学会関東支部山梨講演会P80-81
  • Place of Presentation: 山梨大学
  • Year and Date: 2010-10-23