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ID 31638
file
title alternative
PIV Measurement and Turbulence Scale in Turbulent Combustion
creator
Yamamoto, Kazuhiro
Inoue, Satoshi
Yamashita, Hiroshi
Onuma, Yoshiaki
subject
Premixed Combustion
Flame
Turbulent Flow
Flow Measurements
PIV
NDC
Technology. Engineering
abstract
We have investigated a turbulent combustion by PIV (Particle Image Velocimetry) technique. Comparing with LDV data, the validity of PIV measurement has been confirmed. Especially, the conditions of sampling number and spatial resolution have been revealed to obtain reliable data by PIV. Based on the velocity fields in cold flow and combustion, the interaction between flame and flow has been discussed. It is observed that the flow field is changed by combustion and the turbulence is reduced. For determining statistic quantities such as mean velocity and rms of velocity fluctuation, the sampling number of 1000 is needed. Moreover, the velocity correlation coefficient is evaluated to obtain the integral length scale of the flow. For both cold flow and combustion, the estimated scale by PIV is very close to that by LDV based on the assumption of Taylor's hypothesis. Resultantly, the special resolution in this study is about 6 times smaller than the integral length scale.
journal title
日本機械学會論文集. B編
volume
Volume 71
issue
Issue 711
start page
2741
end page
2747
date of issued
2005-11-25
publisher
一般社団法人日本機械学会
issn
0387-5016
ncid
language
jpn
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
社団法人日本機械学会
本文データは学協会の許諾に基づきCiNiiから複製したものである
relation is version of URL
http://ci.nii.ac.jp/naid/110005051729
department
Graduate School of Engineering



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