Application of particle image velocimetry to the direct measurement of laminar burning velocity in homogeneous propane-air mixtures

1995 ◽  
Author(s):  
Minyong Zhou ◽  
Colin P. Garner
Keyword(s):  
Particle Image Velocimetry ◽  
Direct Measurement ◽  
Particle Image ◽  
Burning Velocity ◽  
Laminar Burning Velocity ◽  
Image Velocimetry

Direct measurement of fluid velocity in an electrospinning jet using particle image velocimetry

2007 ◽  
Vol 102 (9) ◽  
pp. 094308 ◽  
Author(s):  
Leon M. Bellan ◽  
Harold G. Craighead ◽  
Juan P. Hinestroza
Keyword(s):  
Particle Image Velocimetry ◽  
Direct Measurement ◽  
Particle Image ◽  
Fluid Velocity ◽  
Image Velocimetry

scholarly journals Influence of the Laminar Burning Velocity on the Transfer Functions of Premixed Methane and Propane Swirl Flames

2019 ◽  
Author(s):  
F. Di Sabatino ◽  
T. F. Guiberti ◽  
J. P. Moeck ◽  
W. L. Roberts ◽  
D. A. Lacoste
Keyword(s):  
Particle Image ◽  
Transfer Functions ◽  
Burning Velocity ◽  
Velocity Fields ◽  
Laminar Burning Velocity ◽  
Hot Wire ◽  
Flame Dynamics ◽  
Image Velocimetry ◽  
Rate Oscillations ◽  
Key Parameter

Abstract The effects of the laminar burning velocity (SL), on the transfer functions of propane-air and methane-air swirl flames is experimentally investigated. Five equivalence ratios for each fuel are selected, to yield different values of SL. The flame transfer function (FTF), is obtained by comparing the velocity fluctuations of the incoming flow, measured with a hot wire, to the heat release rate oscillations, collecting OH* chemiluminescence with a photomultiplier tube. Phase-locked images of OH* chemiluminescence are also acquired to analyze the flame dynamics during the forcing cycle. The unforced velocity fields are measured by particle image velocimetry to assess the effects of SL on the flow fields. Changing the laminar burning velocity affects mainly the gain around 176 Hz and 336 Hz. This paper focuses on 336 Hz. The flame vortex roll-up is recognized as a key parameter controlling the gain of the FTF around 336 Hz. The analysis highlights that SL influences the gain response around 336 Hz in two competing ways: first, it enhances the flame vortex roll-up and second, it affects the stabilization distance of the flame, which influences the vortex generated by acoustic forcing.

Sign in / Sign up

Export Citation Format

Share Document