The investigation focuses on optimizing the length of wind-pipe that transmits acoustic energy from the compression driver to the cavity of twin-fluid atomizers. To accomplish this objective, the primary variable of stability, that is, the breakup length of liquid jet and sheet under acoustic perturbations has been experimentally characterized for a range of wind-pipe length and liquid velocity. The analysis considers liquid phase Weber number in the range of 0.7–8, and the results are compared with primary breakup data without acoustic perturbations. The range of Weber number tested belongs to Rayleigh breakup zone, so that inertia force is negligible compared to surface tension force. It shows the existence of unique stability functions based on dimensionless products up to an optimum wind-pipe length, which extends greater for liquid sheet configuration. The present results may find relevance in atomizer design that utilizes acoustic source to enhance liquid column breakup processes.

References

References
1.
Ashgriz
,
N.
,
2011
,
Handbook of Atomization and Sprays: Theory and Applications
,
Springer
,
New York
.
2.
Bachalo
,
W.
,
Chigier
,
N.
, and
Reitz
,
R.
,
2000
,
Spray Technology Short Course Notes
,
Carnegie Mellon University
,
Pittsburgh, PA
.
3.
Miesse
,
C. C.
,
1955
, “
The Effect of Ambient Pressure Oscillations on the Disintegration and Dispersion of a Liquid Jet
,”
Jet Propul.
,
25
(
10
), pp.
525
530
.
4.
Davis
,
D. W.
, and
Chehroudi
,
B.
,
2007
, “
Measurements in an Acoustically Driven Coaxial Jet Under Sub-, Near-, and Supercritical Conditions
,”
J. Propul. Power
,
23
(
2
), pp.
364
374
.
5.
Baillot
,
F.
,
Blaisot
,
J. B.
,
Boisdron
,
G.
, and
Dumouchel
,
C.
,
2009
, “
Behaviour of an Air-Assisted Jet Submitted to a Transverse High-Frequency Acoustic Field
,”
J. Fluid Mech.
,
640
, pp.
305
342
.
6.
Carpentier
,
J. B.
,
Baillot
,
F.
,
Blaisot
,
J. B.
, and
Dumouchel
,
C.
,
2009
, “
Behavior of Cylindrical Liquid Jets Evolving in a Transverse Acoustic Field
,”
Phys. Fluids
,
21
(
2
), p.
023601
.
7.
Hagerty
,
W. W.
, and
Shea
,
J. F.
,
1955
, “
A Study of the Stability of Plane Fluid Sheets
,”
ASME J. Appl. Mech.
,
22
, pp.
509
514
.
8.
Mansour
,
A.
, and
Chigier
,
N.
,
1991
, “
Dynamic Behavior of Liquid Sheets
,”
Phys. Fluids
,
3
(
12
), pp.
2971
2980
.
9.
Chung
,
I. P.
,
Presser
,
C.
, and
Dressler
,
J. L.
,
1998
, “
Effect of Piezoelectric Transducer Modulation on Liquid Sheet Disintegration
,”
Atom. Sprays
,
8
(
5
), pp.
479
502
.
10.
Rhys
,
N. O.
,
1999
, “
Acoustic Excitation and Destruction of Liquid Sheets
,”
Ph.D. thesis
, The University of Alabama, Huntsville, AL.
11.
Sivadas
,
V.
,
Fernandes
,
E. C.
, and
Heitor
,
M. V.
,
2003
, “
Acoustically Excited Air-Assisted Liquid Sheets
,”
Exp. Fluids
,
34
(
6
), pp.
736
743
.
12.
Mulmule
,
A. S.
,
Tirumkudulu
,
M. S.
, and
Ramamurthi
,
K.
,
2010
, “
Instability of a Moving Liquid Sheet in the Presence of Acoustic Forcing
,”
Phys. Fluids
,
22
(
2
), p.
022101
.
13.
Sivadas
,
V.
,
Balaji
,
K.
,
Krishna Raj
,
I.
,
Vignesh
,
E.
, and
Aravind
,
R.
,
2013
, “
Area Void Fraction Associated With Twin-Fluid Atomizer
,”
Atom. Sprays
,
23
(
8
), pp.
663
676
.
14.
Fernandes
,
E. C.
, and
Heitor
,
M. V.
,
1997
, “
Simultaneous Measurements of Velocity, Pressure, Temperature and Heat Release in an Oscillating Flame
,”
90th Symposium of Propulsion and Energetics on the Advanced Non-Intrusive Instrumentation for Propulsion Engines
,
AGARD
, Brussels, Belgium.
15.
Kinsler
,
L. E.
,
Frey
,
A. R.
,
Coppens
,
A. B.
, and
Sanders
,
J. V.
,
1982
,
Fundamentals of Acoustics
,
Wiley
,
New York
.
You do not currently have access to this content.