A three-dimensional viscous flow analysis is performed using a time-marching Reynolds-averaged Navier-Stokes code for a 3:1 rectangular nozzle with two delta tabs located at the nozzle exit plane to enhance mixing. Two flow configurations, a subsonic jet case and a supersonic jet case using the same tab configuration, which were previously studied experimentally, are computed and compared with the experimental data. The experimental data include streamwise velocity and vorticity distributions for the subsonic case, and Mach number distributions for the supersonic case, at various axial locations downstream of the nozzle exit. The computational results show very good agreement with the experimental data. In addition, the effect of compressibility on vorticity dynamics is examined by comparing the vorticity contours of the subsonic jet case with those of the supersonic jet case which were not measured in the experiment.

Issue Section:
Gas Turbines: Aircraft
Topics:
Compressible flow, Computation, Nozzles, Vorticity, Compressibility, Dynamics (Mechanics), Flow (Dynamics), Mach number, Viscous flow
1.
Bohl, D., and Foss, J., 1995, “Characteristics of the Velocity and Streamwise Vorticity Fields in a Developing Tabbed Jet,” AIAA Paper 95-0102.
2.
Bradbury
L. J. S.
, and
Khadem
A. H.
,
1975
, “
The Distortion of a Jet by Tabs
,”
Journal of Fluid Mechanics
, Vol.
70
, pp.
801
–
813
.
3.
Cooper, G. K., Jordan, J. L., and Phares, W. J., 1987, “Analysis Tool for Application to Ground Testing of Highly Underexpanded Nozzles,” AIAA Paper 87-2015.
4.
Cooper, G. K., and Sirbaugh, J. R., 1989, PARC Code: Theory and Usage, AEDC-TR-89-15, Arnold Engineering Development Center, Tullahoma, TN.
5.
DeBonis, J. R., 1992, “Full Navier-Stokes Analysis of a Two-Dimensional Mixer/Ejector Nozzle for Noise Suppression,” AIAA Paper 92-3570.
6.
DeBonis, J. R., and Georgiadis, N. J., 1995, “Validation of the NPARC Code for Nozzle Afterbody Flows at Transonic Speeds,” AIAA Paper 95-2614.
7.
Georgiadis, N. J., and Yoder, D. A., 1994, “Use of Navier-Stokes Methods for the Calculation of High-Speed Nozzle Flow Fields,” AIAA Paper 94-3212.
8.
Ho
C.-M.
, and
Gutmark
E.
,
1987
, “
Vortex Induction and Mass Entrainment in a Small-Aspect-Ratio Elliptic Jet
,”
Journal of Fluid Mechanics
, Vol.
179
, p.
383
383
.
9.
Hussain
F.
, and
Hussain
H. S.
,
1989
, “
Elliptic Jets. Part 1. Characteristics of Unexcited and Excited Jets
,”
Journal of Fluid Mechanics
, Vol.
208
, pp.
257
–
320
.
10.
Jameson, A., Schmidt, W., and Turkel, E., 1981, “Numerical Solutions of the Euler Equations by Finite Volume Method Using Runge-Kutta Time Stepping Schemes,” AIAA 81-1259.
11.
Khavaran, A., and Georgiadis, N. J., 1996, “Aeroacoustics of Supersonic Elliptic Jets,” AIAA Paper 96-0641.
12.
NPARC Alliance Technical Team, 1994, A User’s Guide to NPARC, NPARC Alliance Technical Team, Arnold Engineering Development Center, Arnold Air-force Base, TN.
13.
Lee, H. W., and Sova, G., 1995, private communication, Rockwell Aerospace, Seal Beach, CA.
14.
Pope
S. B.
,
1978
, “
An Explanation of the Turbulent Round-Jet/Plane-Jet Anomaly
,”
AIAA Journal
, Vol.
16
, No.
3
, pp.
279
–
281
.
15.
Pulliam
T. H.
, and
Steger
J. L.
,
1980
, “
Implicit Finite-Difference Simulations of Three-Dimensional Compressible Flow
,”
AIAA Journal
, Vol.
18
, pp.
159
–
167
.
16.
Pulliam, T. H., 1984, “Euler and Thin Layer Navier-Stokes Code: ARC2D, ARC3D,” notes for CFD User’s Workshop, The University of Tennessee Space Institute, Tullahoma, TN, March 12-16.
17.
Reddy
D. R.
,
1995
, “
3-D Navier-Stokes Analysis of Crossing Glancing Shocks/Turbulent Boundary Layer Interactions
,”
Computers & Fluids
, Vol.
24
, No.
4
, pp.
435
–
445
.
18.
Reeder, M. F., 1994, “An Experimental Study of Mixing Enhancements in Jets with Vortex Generating Tabs,” Ph.D. dissertation, Ohio State University, Columbus, OH.
19.
Roache, P. J., 1994, “Perspective: A Method for Uniform Reporting of Grid Refinement Studies,” Journal of Fluids Engineering, Vol. 116.
20.
Samimy
M.
,
Zaman
K. B. M. Q.
, and
Reeder
M. F.
,
1993
, “
Effects of Tabs at the Nozzle Lip on the Flow and Noise Field of an Axisymmetric Jet
,”
AIAA Journal
, Vol.
31
, No.
4
, pp.
609
–
619
.
21.
Siclari, M. J., DelGuidice, P., and Jameson, A., 1989, “A Multigrid Finite Volume Method for Solving the Euler and Navier-Stokes Equations for High Speed Flows,” AIAA Paper 89-0283.
22.
Spalart, P. R., and Allmaras, S. R., 1992, “A One-Equation Turbulence Model for Aerodynamic Flows,” AIAA Paper 92-0439.
23.
Steffen, C. J., Jr., Reddy, D. R., and Zaman, K. B. M. Q., 1995, “Analysis of Flowfield from a Rectangular Nozzle with Delta Tabs,” AIAA Paper 95-2146.
24.
Steibrenner, J. P., and Chawner, J. R., 1995, Users Manual for GRIDEN, Version 10, Pointwise, Inc., Bedford, TX.
25.
Zaman, K. B. M. Q., Reeder, M. F., and Samimy, M., 1994, “Control of an Axisymmetric Jet Using Vortex Generators,” Physics of Fluids.
26.
Zaman, K. B. M. Q., 1996, “Spreading Characteristics and Thrust of Jets from. Asymmetric Nozzles,” AIAA Paper 96-0200.
27.
Zaman
K. B. M. Q.
,
1996
, “
Axis Switching and Spreading of an Asymmetric Jet: The Role of Coherent Structure Dynamics
,”
Journal of Fluid Mechanics
, Vol.
316
, pp.
1
–
27
.
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