Download Reynolds Averaged Navier Stokes Computations of Jet Flows Emanating From Turbofan Exhausts Turbofan Egzoz Cikisi Jet Akisinin Reynolds Averaged Navier Stokes Ile Hesaplanmasi PDF

TitleReynolds Averaged Navier Stokes Computations of Jet Flows Emanating From Turbofan Exhausts Turbofan Egzoz Cikisi Jet Akisinin Reynolds Averaged Navier Stokes Ile Hesaplanmasi
TagsTurbulence Fluid Dynamics Jet Engine Navier–Stokes Equations Reynolds Number
File Size7.7 MB
Total Pages83
Document Text Contents
Page 1

REYNOLDS-AVERAGED NAVIER-STOKES COMPUTATIONS OF JET
FLOWS EMANATING FROM TURBOFAN EXHAUSTS









A THESIS SUBMITTED TO
THE GRADUATE SCHOOL OF NATURAL AND APPLIED SCIENCES

OF
MIDDLE EAST TECHNICAL UNIVERSITY






BY




SERPİL KAYA






IN PARTIAL FULFILLMENT OF THE REQUIREMENTS
FOR

THE DEGREE OF MASTER OF SCIENCE
IN

AEROSPACE ENGINEERING





SEPTEMBER 2008

Page 2

ii

Approval of the Graduate School of Natural and Applied Sciences






Prof. Dr. Canan ÖZGEN

Director


I certify that this thesis satisfies all the requirements as a thesis for the
degree of Master of Science.






Prof. Dr. İ. Hakkı TUNCER
Head of Department


This is to certify that we have read this thesis and that in our opinion it is fully
adequate, in scope and quality, as a thesis for the degree of Master of
Science.




Prof. Dr. Yusuf ÖZYÖRÜK
Supervisor



Examining Committee Members

Prof. Dr. Yusuf Özyörük (METU, AEE)

Prof. Dr. İ. Hakkı Tuncer (METU, AEE)

Assist. Prof. Dr. Oğuz Uzol (METU, AEE)

Dr. D. Funda Kurtuluş (METU, AEE)

Assist. Prof. Dr. Nilay Sezer Uzol (TOBB ETU, ME)

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Velocity Profile at x=0.0762 m

0

0.2

0.4

0.6

0.8

1

1.2

0 50 100 150 200 250 300 350 400
Velocity (m/s)

H
ei

gh
t

Experiment FLUENT Realizable k-epsilon FLUENT SST k-omega
WIND k-epsilon [21] FLUENT Standart k-epsilon FLUENT Spalart-Allmaras

Figure 3.5 Velocity profile for 2D ejector at x=0.0762 m.

Velocity Profile at x=0.127 m

0

0.2

0.4

0.6

0.8

1

1.2

0 50 100 150 200 250 300 350

Velocity (m/s)

H
ei

gh
t

Experiment FLUENT Realizable k-epsilon FLUENT SST k-omega
WIND k-epsilon [21] FLUENT Standart k-epsilon FLUENT Spalart-Allmaras

Figure 3.6 Velocity profile for 2D ejector at x=0.127 m.

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Velocity Profile at x=0.1778 m

0

0.2

0.4

0.6

0.8

1

1.2

0 50 100 150 200 250 300

Velocity (m/s)

H
ei

gh
t

Experiment FLUENT Realizable k-epsilon FLUENT SST k-omega
WIND k-epsilon [21] FLUENT Standart k-epsilon FLUENT Spalart-Allmaras



Figure 3.7 Velocity profile for 2D ejector at x=0.1778 m.

Velocity Profile at x=0.2667 m

0

0.2

0.4

0.6

0.8

1

1.2

0 50 100 150 200 250
Velocity (m/s)

H
ei

gh
t

Experiment FLUENT Realizable k-epsilon FLUENT SST k-omega
WIND k-epsilon [21] FLUENT Standart k-epsilon FLUENT Spalart-Allmaras



Figure 3.8 Velocity profile for 2D ejector at x=0.2667 m.

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[30] Lele S. K., “Compressibility Effects on Turbulence”, Annual Reviews in.

Fluid Mechanics, 1994, 26:211-54.

[31] Georgiadis N. J., Debonis J. R., “Navier-Stokes Analysis for Turbulent

Jet Flows with Application to Aircraft Exhaust Nozzles”, Prog. Aerospace Sci

(2007), doi: 10.1016/j.paerosci.2006.12.001.

[32] http://www.grc.nasa.gov/WWW/wind/valid/eject/eject.cgd

[33] Fluent User’s Manual.

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