Development of Three-Dimensional Automatic Measurement and Optimization System for Three-Dimensional Heat and Fluid Flow

1996 Fiscal Year Final Research Report Summary

• Project/Area Number: 07555067
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 試験
• Research Field: Thermal engineering
• Research Institution: The University of Tokyo
• Principal Investigator: KASAGI Nobuhide The University of Tokyo Faculty of Engineering, Professor, 大学院・工学系研究科, 教授 (80107531)
• Project Period (FY): 1995 – 1996
• Keywords: Heat and Fluid Flow / Non-invasive Measurement / 3D Measurement / Particle Image Velocimetry / Laser Induced Fluorescence / Scanning Laser Sheet / Stratified Mixing Layr / High Definition TV System

Research Abstract

A combined velocity and temperature measurement system based on particle image velocimetry (PIV) and laser-induced fluorescence (LIF) was developed by using a high definition TV system (HDVS). This technique provides four-dimensional (spatially and temporally varying) data sets through scanning a measurement volume with a laser sheet. The uncertainty intervals associated with measured celocity and temperature were decreased to about 50% of those in previous results owing to high spatial resolution of the HDVS.The present technique has been successfully applied to stably and unstably stratified mixing layrs in a rectangular cross-section duct. It is demonstrated that the present technique can offer precise distributions of velocity and temperature fluctuations and also turbulent heat fluxes.