International Journal of Application or Innovation in Engineering & Management
An Inspiration for Recent Innovation & Research….
ISSN 2319 – 4847
www.ijaiem.org
Call for Paper, Published Articles, Indexing Infromation
Title: |
Spray Transport Past Cylindrical Elements found in a Generic Aircraft Engine Nacelle: A PIV and PDA Comparison
|
Author Name: |
Peter J. Disimile |
Abstract: |
ABSTRACT
To better address the fire protection challenges which exist in aircraft engine nacelles, it is important to understand the
transport of high boiling point liquids as they are sprayed past generic clutter elements that are found in aircraft engine
nacelles. Specifically, there is a lack of reliable velocity and drop size measurements located downstream of an arrangement of
clutter elements found in aircraft engine nacelles. To this end the need to non-intrusively record the drop size and velocity of
fire suppressants in generic cluttered nacelle environments are critical. Two common nonintrusive optical methods, particle
image velocimetry (PIV) and Phase Doppler Anemometry (PDA) were applied to a suppressant spray nozzle characterization.
This characterization was performed upstream and downstream of a cylindrical tube array, which is of special interest in
aircraft engine nacelle fire suppressant transport and distribution. A comparison between these two measurement techniques
were conducted to analyze and highlight the strengths and limitations of each technique when applied to practical applications
with large dynamic ranges. The experimental results demonstrate significant differences in velocity measurements between
PIV and PDA due to the methodology each system employs; however, the characteristic trends of the velocity profiles were
found to be consistent. In addition the high shear and vortex shedding which follow the clutter elements also contribute to this
discrepancy between the two measurement approaches. The following data suggests that careful consideration must be taken
when choosing an optical approach for the measurement of applications with large dynamic range applications, as those found
in fire suppressant transport.
Keywords: Particle Image Velocimetry, Phase Doppler Anemometry, fire suppressant distribution, high boiling point
suppressants, two-phase flow, droplet laden flows |
Cite this article: |
Peter J. Disimile , "
Spray Transport Past Cylindrical Elements found in a Generic Aircraft Engine Nacelle: A PIV and PDA Comparison " , International Journal of Application or Innovation in Engineering & Management (IJAIEM),
Volume 4, Issue 6, June 2015 , pp.
080-089 , ISSN 2319 - 4847.
|