Shadowgraph visualization and Planar Laser Induced Fluorescence (PLIF) are applied to single orifice injection in the same facility and same fluid conditions to analyze sub- to supercritical jet disintegration and mixing. The comparison includes jet disintegration and lateral spreading angle. The results indicate that the shadowgraph data are in agreement with previous visualization studies but differ from the PLIF results that provided quantitative measurement of central jet plane density and density gradients. The study further evaluated the effect of thermodynamic conditions on droplet production and quantified droplet size and distribution. The results indicate an increase in the normalized drop diameter and a decrease in the droplet population with increasing chamber temperatures. Droplet size and distribution were found to be independent of chamber pressure.

1.
Lord
Rayleigh
, “
On the instabililty of jets
,”
Proc. London Math. Soc.
s1-10
,
4
13
(
1878
).
2.
G.
Taylor
,
Scientific Papers
(
Cambridge University Press
,
Cambridge
,
1962
).
3.
S.
Chandrasekhar
,
Hydrodynamic and Hydromagnetic Stability
(
Dover
,
New York
,
1961
).
4.
B.
Chehroudi
, “
Recent experimental efforts on high-pressure supercritical injection for liquid rockets and their implications
,”
Int. J. Aerosp. Eng.
2012
,
121802
.
5.
S.
Lin
and
R.
Reitz
, “
Drop and spray formation from a liquid jet
,”
Annu. Rev. Fluid Mech.
30
,
85
105
(
1998
).
6.
C.
Dumouchel
, “
On the experimental investigation on primary atomization of liquid streams
,”
Exp. Fluids
5
(
3
),
371
422
(
2008
).
7.
J.
Bellan
, “
Supercritical (and subcritical) fluid behavior and modeling: Drops, streams, shead and mixing layers, jets and sprays
,”
Prog. Energy Combust. Sci.
26
(
4
),
329
366
(
2000
).
8.
J.
Newman
and
T.
Brzustowski
, “
Behavior of a liquid jet near the thermodynamic critical region
,”
AIAA J.
9
(
8
),
1595
1602
(
1971
).
9.
T.
Bruno
and
J.
Ely
,
Supercritical Fluid Technology: Review in Modern Theory and Applications
(
CRC Press
,
1991
).
10.
V.
Yang
, “
Modeling of supercritical vaporization, mixing, and combustion processes in liquid-fueled propulsion systems
,”
Proc. Combust. Inst.
28
(
1
),
924
942
(
2000
).
11.
N.
Zong
,
H.
Meng
,
S.
Hsieh
, and
V.
Yang
, “
A numerical study of cryogenic fluid injection and mixing under supercritical conditions
,”
Phys. Fluids
16
(
12
),
4248
4261
(
2004
).
12.
B.
Chehroudi
,
D.
Talley
, and
E.
Coy
, “
Initial growth rate and visual characteristics of a round jet into a sub-to supercritical environment of relavence to rocket, gas turbine, and diesel engines
,” in
Proceedings of the 37th AIAA Aerospace Science Meering and Exhibit
,
Reno, NV, USA
,
1999
.
13.
G.
Abramovich
,
Theory of Turbulent Jets
(
MIT Press
,
Cambridge
,
1963
).
14.
P.
Dimotakis
, “
Two-dimensional shear-layer entrainment
,”
AIAA J.
24
(
11
),
1791
1796
(
1986
).
15.
D.
Papmoshou
and
A.
Roshko
, “
The compressible turbulent shear layer: An experimental study
,”
J. Fluid Mech.
197
(
1
),
453
477
(
1988
).
16.
M.
Oschwald
,
J.
Smith
,
R.
Branam
,
J.
Hussong
,
A.
Schik
,
B.
Chehroudi
, and
D.
Talley
, “
Injection of fluids into supercritical envinronments
,”
Combust. Sci. Technol.
178
(
1-3
),
49
100
(
2006
).
17.
B.
Chehroudi
,
D.
Talley
, and
E.
Coy
, “
Visual characteristics and initial growth rates of round cryogenic jets at subcritical and supercritical pressures
,”
Phys. Fluids
14
(
2
),
850
861
(
2002
).
18.
N.
Zong
and
V.
Yang
, “
Cryogenic fluid jets and mixing layers in transcritical and supercritical environments
,”
Combust. Sci. Technol.
178
(
1-3
),
193
227
(
2006
).
19.
C.
Segal
and
S.
Polikov
, “
Subcritical to supercritical mixing
,”
Phys. Fluids
20
(
5
),
052101
(
2008
).
20.
A.
Roy
, “
Subcritical and supercritical fuel injection and mixing in single and binary species systems
,” Ph.D. thesis,
University of Florida
,
Gainesville, FL, USA
,
2012
.
21.
A.
Roy
,
C.
Segal
, and
C.
Joly
, “
Spreading angle and core length analysis of supercritical jets
,”
AIAA J.
51
(
8
),
2009
2014
(
2013
).
22.
G.
Lamanna
,
E.
Oldenhof
,
S.
Baab
,
I.
Stotz
, and
B.
Weigand
, “
Disintegration regimes near the critical point
,” in
18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference
(
AIAA
,
Tours, FR
,
2012
).
23.
R.
Reitz
and
F.
Bracco
, “
Mechanism of atomization of a liquid jet
,”
Phys. Fluids
25
(
10
),
1730
1742
(
1982
).
24.
S.
Polikov
, “
Experimental study of subcritical to supercritical mixing
,” Ph.D. thesis,
University of Florida
,
Gainesville, FL, USA
,
2007
.
25.
J.
Owens
, “
Understanding the stability and environmental characteristics of a sustainable halon alternative
,” in
Proceedings of the 13th Halon Options Technical Working Conference
,
Albuquerque, NM, USA
,
2007
.
26.
A.
Roy
,
C.
Joly
, and
C.
Segal
, “
Disintegrating supercritical jets into subcritical environments
,”
J. Fluid Mech.
717
,
193
202
(
2013
).
27.
R.
Reitz
and
F.
Bracco
, “
On the dependence of spray angle and other spray parameters on nozzle design and operating condition
,” in
Proceedings of the SAE International Congress of Exposition
,
Detroit, MI, USA
,
1979
.
28.
R.
Reitz
and
F.
Bracco
, “
On the dependence of spray angle and other spray parameters on nozzle design and operating condition
,” in
SAE International Congress and Exposition
,
Detroit, MI, USA
,
1979
.
You do not currently have access to this content.