TO Professor AH LEFEBVRE

119 Pages·2012·3.8 MB·English

TO
Professor A. H. LEFEBVRE Mr. E. R. NORSTER
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IN THE NAUE OF GOD THIS ßEItEVOZE; AND
`tT
THE E0$r MERCIFUL
TUF COLLEGE OF AERONAUTICS
CRA IT PIRLD
T1FPARTMEl'IT OF AIRCRAFT PRnPti7I3InSi
DISCHARßF eOFFFIQIIII-IT AND JFT D'rrLýý+: CTION STUDI,. 3
F0R
_.. ý_ý_..
COMBU3TOR LINER AIR NTRY HOLP:: 3`
-
BY: K. SH. KADDAR
for the Diploma Advanced Engineering
Thesis
submitted of
lot JUNE, 1964
ACI4In'A'LM)c3NF, NT3
The to his thanks
author wishes express most sincere
to Professor A. H. Lefebvre Head the Department
of
of
'
Aircraft Propulsion to Kr. E. R. Norater who
and
,
this for his helpful
supervised work advice and assistance.
Thanks to the Propulsion
are extended also staff members,
to the College Authorities for facilities
and providing all
to this
carry out work.
Thanks due to Workshop Mr. r. A. McNeill,
are also ataff,
Library
Photographic
and staffs.
The to his thanks to Mrs. Archer
author wishes also express
for the task typing this thesis
of
1.
Section I
S 11 141 73 ARY
Theoritical investigations discharge
and experimental of
jet deflection 1avo been for holes
coefficient and made
'
having to the the hole
parallel plane of
In the investigation
geometric configurations
experimental
holes
studied were circular oval rectangular and
, , , ,
The flow factors
square alo-s main geometric and affecting
.
discharge jet deflection
coefficient and were atudt1
.
Geor factors Ratio to
otrie ware : of hc1f: area nprrouch
a,
F6C4C
duct from O. 03'Y '5 to O. ; slot
area ranging aspect
from 1,0 to 8.0 Slot dimension the flow
ratio ; major along
up to 2.0 inch with duct depth 1.25 inch ; and slot shape
.
/
Flow factors Static to
were ; pressure ratio pi pj up
V1 to1303f
1,12 ; Bleed ratio of ; and approach velocity up
.
The these have been
results of studies. correlated with
the dimensionless flow Y. incorporating both the
parameter
flow factors
geometric and
Data in detailed form for direct
are presented use with
to liners
survey and-design applications combustor
,
2.
Section 2
corrcFtrr: 3
vaLU1aF ý
3e tion Pa
?P
ýý
Title
Acknowledgments
1I
SUMMARY
1
2
2 CONTIMLIS
6
3 ? 1rTAT In? T3
6
3.1 Liat
of symbols
8
3.2 muff ix
notation
9
4 IT7rRODLRTI(11
5 RY I*';; OF PREVIOUS WORK 11
5.1 Diacharge 11
coefficient
15
5.2 Deflection
angle
6 `r1 Eo ITICAL ITIVMTIGATIC"11 18
6.1 Analysis I 19
6.2 Analysis IL 23
7i PERIYF1TTAL ? '1VP: 1TIGATIf" 27
7.1 Rig deoeription and levelopmer, to 27
7.2 Tent dpa^ription dnvnlcpm 27
section and nts
7.3 Tont
plates 29
7.4 Instruments 32
and calibrations
32
7.4.1 measure
measurements
32
7.4.1.1 Approach static rrennure
32
7.4.1.2 Jet
static pressure
3.
(continued)
CONJ g
Section
PA
PM
7.4. i«3 Total dynamic
and presaurea 33
7.4.2 Temperature
33
meacuremento
7.4.3 Flog 34
rate measurementa
7.4.4 Velocity 35
measurements
7.5 Deflection
angle measurement and
36
jet
visulation
7.6 Preliminary 37
work
37
7.6.1 Velocity
profile
38
7.6.2 Deflection
angle
39
7.6.3 precautions
7.7 Teat 39
procedure
8 PRESr'ETTTATIO? J Op R : 3ULP 3 AND DIgcU3AUIo^t 42
42
8.1 Correlation
of results
42
8.2 Discussion theoritical analyses
of
42
8.2.1 I
Analysis
U
44
8.2,2
Analysis
8.2.2.1 Momentum loss factor 45
45
8.3 Discussion
of experimental results
8.3.1 Disoh jet deflection
rge coefficient and
45
for holes
rcular
8,3.2
Discharge
coefficient jet
deflection
and
for Oval
alote
47
8.3.3 Discharge
coefficient jet deflection
and
for Rectangular
slots Iý9
8.3.4 Discharge
cocftioi, nt ani jet d#f3(-ct ion
for
various
configurations
51
It*
(continued)
COMMS
action
Pn
rrý.. n
.
8.34.1
Holes
and sloto with equal areas
and nuMers 51
8.3.4.2
Slots
with equal nreaa, nunber3
52
and aspect ration
8.3.5
Analysis 53
of experimental results
8.4
Comparison
of experimental results
theory 54
with
8.4.1
Discharge 54
coefficient
8.4.2 Jet deflection 55
8.5
Cociptiriaon
of experimental results
55
with previous work
8.5.1 Discharge 55
coefficient
8.5.2
Jet deflection 56
9 USE OF DATA 57
9.1 For 57
survey applications
9.2 For design 58
applications
e0
10 CONNCLU3I02T3
11 R? =MJF. IM. FOR y lT'2TI' ''? 'VORY 62
%TION"3
R F' ý; Ti ý; `Ir, F3 63
APPF "IC F,: 3
APPENDIX low K 65
I parameter
APPENDIX 2 Reduction 69
of experimental resulto
A2.1 Method
used for
calculation of
69
results
A2.2 Momentum
Ions
factor 71
5.
(continued)
COINT
Page
Section
APPENDIX 3 Calibrations 74
A3.1 Orifice
plate characteristics
74
and calibration
A3,2 Pitot tube
and
characteristics
77
calibration
80
tP Correlation Gandamihardju
APPENDIX
of
(Ref.
7)
work
84
Appendix 5 Jet
study
87
(30
TABLES Table)
V0LUMME 2
( )
FIGURE3 125 figure
( )
APPENDIOE1 FIGUR'R3 26 figure
)
PHOTOGRAPHIC PLATE3( 24
plate
SEPARATE DÖQUMF. NT
( )
DESIGN DRAWINGS '1: 0 aheeta