Aerodynamic investigations on generic fan-in-wing configurations:
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis Book |
| Language: | English |
| Published: |
München
Hut
2011
|
| Edition: | 1. Aufl. |
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | XXI, 167 S. graph. Darst. |
| ISBN: | 9783868537710 |
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MARC
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| 245 | 1 | 0 | |a Aerodynamic investigations on generic fan-in-wing configurations |c Nicolas Thouault |
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| 264 | 1 | |a München |b Hut |c 2011 | |
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Record in the Search Index
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| adam_text | IMAGE 1
TABLE OF CONTENTS
LIST OF FIGURES V
LIST OF TABLES XV
NOMENCLATURE XVII
1 BACKGROUND AND MOTIVATION 1
1.1 POWERED-LIFT AIRCRAFTS 2
1.1.1 FAN-IN-WING AERODYNAMICS 2
1.1.2 LIFT-FAN AERODYNAMIC CHARACTERISTICS 3
1.1.2.1 INLET DISTORTION 4
1.1.2.2 JET DEFLECTION AT THE FAN EXIT 5
1.1.3 JET POWERED AIRCRAFTS 5
1.2 FLOW PHYSICS OF A JET-IN-CROSS-FLOW 6
1.2.1 FLOW FEATURES 6
1.2.2 CHARACTERISTIC PARAMETERS 7
1.2.3 NUMERICAL SIMULATIONS OF JICF 7
1.3 OBJECTIVES AND SCOPE OF THE STUDY 8
1.4 PROBLEM SOLUTION AND METHODOLOGY 9
1.5 OUTLINE OF THE PRESENT WORK 10
2 EXPERIMENTAL AND NUMERICAL SETUP 13
2.1 EXPERIMENTAL SETUP 13
2.1.1 WIND TUNNEL MODEL 13
2.1.2 EXPERIMENTAL TECHNIQUES AND TEST CONDITIONS 16
2.1.2.1 FORCE MEASUREMENTS 16
2.1.2.2 PRESSURE MEASUREMENTS 17
2.1.2.3 PARTICLE-IMAGE-VELOCIRNETRY (PIV) FLOW FIELD MAPPING . 18
2.1.2.4 HOT-WIRE MEASUREMENTS 18
2.1.2.5 FLOW VISUALIZATION 20
2.1.2.6 POWER AND TEMPERATURE MEASUREMENTS 20
2.2 NUMERICAL SETUP 21
2.2.1 SIMULATION OF THE WING-ALONE 21
2.2.1.1 NUMERICAL METHOD 21
2.2.1.2 GRID-RESOLUTION STUDY 22
BIBLIOGRAFISCHE INFORMATIONEN HTTP://D-NB.INFO/1010075330
DIGITALISIERT DURCH
IMAGE 2
TABLE OF CONTENTS
2.2.2 SIMULATION OF THE FAN-ALONE CASE 22
2.2.2.1 FAN COEFFICIENTS 23
2.2.2.2 NUMERICAL DETAILS 24
2.2.2.3 GRID-RESOLUTION STUDY 25
2.2.3 URANS SIMULATION SETUP 26
2.2.3.1 MESH GENERATION 26
2.2.3.2 BOUNDARY CONDITIONS 27
2.2.3.3 SIMULATION PARAMETERS 29
2.2.3.4 COMPUTATIONAL EFFORT 29
2.2.3.5 GRID-DEPENDENCE STUDY 32
2.2.4 ACTUATOR DISK SIMULATION SETUP 33
2.2.4.1 NUMERICAL DETAILS 33
2.2.4.2 GRID-RESOLUTION STUDY 34
3 VALIDATION OF CFD RESULTS 37
3.1 CLOSED WING 37
3.1.1 COMPARISON TO EXPERIMENTAL DATA 37
3.1.1.1 FORCES AND MOMENTS 37
3.1.1.2 CHORDWISE PRESSURE DISTRIBUTION 38
3.1.2 INFLUENCE OF THE TURBULENCE MODEL 40
3.2 FAN-AT-REAR 43
3.2.1 LIFT, DRAG AND PITCHING MOMENT 43
3.2.2 SURFACE PRESSURE DISTRIBUTION 44
3.2.2.1 CHORDWISE PRESSURE DISTRIBUTION 44
3.2.2.2 CIRCUMFERENTIAL PRESSURE DISTRIBUTION 45
3.2.3 SURFACE STREAMLINES 48
3.2.3.1 WING UPPER SIDE 48
3.2.3.2 WING LOWER SIDE 48
3.2.4 FLOW FIELD 50
3.3 CONCLUSION 54
4 FLOW PHYSICS - TIME-AVERAGED ANALYSIS 57
4.1 CONFIGURATIONS COMPARISON 57
4.1.1 FORCE MEASUREMENTS 57
4.1.2 PRESSURE MEASUREMENTS 60
4.1.3 SMOKE VISUALIZATION 62
4.1.4 WOOL-TUFTS FLOW VISUALIZATION 63
4.1.4.1 WING UPPER SIDE 63
4.1.4.2 WING LOWER SIDE 64
4.2 TIP-SPEED RATIO VARIATION 65
4.2.1 FORCE MEASUREMENTS 65
4.2.2 PRESSURE MEASUREMENTS 67
4.3 JET INTERFERENCE IN TWO-FAN CONFIGURATION 68
4.4 NEAR FIELD FLOW PHYSICS 69
4.4.1 FLOW VISUALIZATION 69
IMAGE 3
TABLE OF CONTENTS III
4.4.2 TIME-AVERAGED VELOCITY FIELD 72
4.5 FAR FIELD FLOW PHYSICS 74
4.5.1 DOWNSTREAM EVOLUTION OF THE CVP 74
4.5.2 EFFECT OF THE ANGLE OF ATTACK 76
4.5.3 EFFECT OF THE TIP-SPEED RATIO 77
4.6 INTERNAL/EXTERNAL FLOW INTERACTION 77
4.6.1 INFLOW DISTORTION 77
4.6.2 FLOW AT THE FAN EXIT 79
4.7 FLOW TOPOLOGY 82
4.7.1 SINGLE FAN-IN-WING CONFIGURATION 82
4.7.2 TWO-FAN CONFIGURATION 83
FLOW PHYSICS - UNSTEADY ANALYSIS 87
5.1 UNSTEADY INLET DISTORTION 87
5.1.1 BLADE DYNAMIC LOADING 87
5.1.2 VELOCITY DISTRIBUTION AT THE FAN INLET 89
5.2 WING LOWER SIDE FLOW PHYSICS 95
5.2.1 QUALITATIVE SMOKE VISUALIZATIONS 95
5.2.1.1 TWO-FAN CONFIGURATION 95
5.2.1.2 FAN-AT-REAR CONFIGURATION 95
5.2.2 DOMINANT FREQUENCY ON THE SIDES OF THE JET WAKE 97
5.2.3 TURBULENT FLOW FIELD 97
5.2.3.1 SIDES OF THE JET WAKE 98
5.2.3.2 WING LOWER SIDE 98
5.2.3.3 DOWNSTREAM OF THE TRAILING EDGE 101
5.2.4 INSTANTANEOUS FLOW FIELD 103
5.2.4.1 VORTICITY FIELD 103
5.2.4.2 TRANSIENT FLOW TOPOLOGY 104
5.2.5 WING DYNAMIC LOADING 107
FAN-IN-WING PARAMETER STUDY 111
6.1 CONFIGURATION DESIGN I LL
6.1.1 SETUP I LL
6.1.1.1 REALISTIC WING PLANFORM I LL
6.1.1.2 NUMERICAL PARAMETERS 112
6.1.2 ANGLE OF ATTACK VARIATION 113
6.1.3 FAN STREAMWISE VARIATION 113
6.1.3.1 EFFECT ON THE AERODYNAMIC COEFFICIENTS 113
6.1.3.2 INDUCED LIFT 116
6.1.4 FAN-INDUCED DRAG 118
6.1.5 INTERACTION WITH THE SYMMETRY PLANE 120
6.1.6 FAN SPANWISE VARIATION 123
6.1.7 FAN DIAMETER VARIATION 125
6.1.8 FAN ROTATION AXIS INCLINATION VARIATION 126
6.1.9 CONFIGURATION WITH TWO TRAILING EDGE FANS 127
IMAGE 4
TABLE OF CONTENTS
6.2 FAN INLET DESIGN 131
6.2.1 INLET DISTORTION PARAMETERS 131
6.2.1.1 EFFECT OF THE LIP-RADIUS-TO-DIAMETER RATIO 131
6.2.1.2 EFFECT OF THE VELOCITY RATIO 132
6.2.1.3 EFFECT OF THE ANGLE OF ATTACK 134
6.2.2 ACTIVE LIP-FLOW CONTROL 134
6.2.2.1 BLOWN-LIP 135
6.2.2.1.1 SETUP 135
6.2.2.1.2 RESULTS 136
6.2.2.2 INLET-LIP GUIDE VANE 136
7 CONCLUSIONS 141
REFERENCES 144
A EXPERIMENTAL TECHNIQUE 153
A.I MODEL CONSTRUCTION STEPS 153
A.2 VARIATION OF THE FAN ROTATIONAL SPEED 153
A.3 REYNOLDS NUMBER DEPENDENCY 156
B NUMERICAL METHOD 157
B.I REYNOLDS AVERAGED NAVIER-STOKES EQUATIONS 157
B.2 THE K - W SST TURBULENCE MODEL 157
B.3 THE EARSM TURBULENCE MODEL 159
B.4 DISCRETIZATION OF THE ADVECTION TERM 161
C URANS SIMULATION TIME-AVERAGING 163
D ADDITIONAL RESULTS 165
D.I VARIATION OF THE NON-DIMENSIONAL WALL DISTANCE 165
D.2 WING TIP VORTEX INVESTIGATION 165
|
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| author | Thouault, Nicolas |
| author_facet | Thouault, Nicolas |
| author_role | aut |
| author_sort | Thouault, Nicolas |
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| ctrlnum | (OCoLC)711860188 (DE-599)DNB1010075330 |
| dewey-full | 629.13335 |
| dewey-hundreds | 600 - Technology (Applied sciences) |
| dewey-ones | 629 - Other branches of engineering |
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| dewey-search | 629.13335 |
| dewey-sort | 3629.13335 |
| dewey-tens | 620 - Engineering and allied operations |
| discipline | Maschinenbau / Maschinenwesen Verkehrstechnik Verkehr / Transport |
| edition | 1. Aufl. |
| format | Thesis Book |
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| id | DE-604.BV037277357 |
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| indexdate | 2024-07-09T22:55:04Z |
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| isbn | 9783868537710 |
| language | English |
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| spelling | Thouault, Nicolas Verfasser aut Aerodynamic investigations on generic fan-in-wing configurations Nicolas Thouault 1. Aufl. München Hut 2011 XXI, 167 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Zugl.: München, Techn. Univ., Diss., 2010 Windkanal (DE-588)4189940-4 gnd rswk-swf FanWing (DE-588)7755698-7 gnd rswk-swf Numerische Strömungssimulation (DE-588)4690080-9 gnd rswk-swf Flugzeugaerodynamik (DE-588)4135410-2 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content FanWing (DE-588)7755698-7 s Flugzeugaerodynamik (DE-588)4135410-2 s Numerische Strömungssimulation (DE-588)4690080-9 s Windkanal (DE-588)4189940-4 s DE-604 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=021190199&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Thouault, Nicolas Aerodynamic investigations on generic fan-in-wing configurations Windkanal (DE-588)4189940-4 gnd FanWing (DE-588)7755698-7 gnd Numerische Strömungssimulation (DE-588)4690080-9 gnd Flugzeugaerodynamik (DE-588)4135410-2 gnd |
| subject_GND | (DE-588)4189940-4 (DE-588)7755698-7 (DE-588)4690080-9 (DE-588)4135410-2 (DE-588)4113937-9 |
| title | Aerodynamic investigations on generic fan-in-wing configurations |
| title_auth | Aerodynamic investigations on generic fan-in-wing configurations |
| title_exact_search | Aerodynamic investigations on generic fan-in-wing configurations |
| title_full | Aerodynamic investigations on generic fan-in-wing configurations Nicolas Thouault |
| title_fullStr | Aerodynamic investigations on generic fan-in-wing configurations Nicolas Thouault |
| title_full_unstemmed | Aerodynamic investigations on generic fan-in-wing configurations Nicolas Thouault |
| title_short | Aerodynamic investigations on generic fan-in-wing configurations |
| title_sort | aerodynamic investigations on generic fan in wing configurations |
| topic | Windkanal (DE-588)4189940-4 gnd FanWing (DE-588)7755698-7 gnd Numerische Strömungssimulation (DE-588)4690080-9 gnd Flugzeugaerodynamik (DE-588)4135410-2 gnd |
| topic_facet | Windkanal FanWing Numerische Strömungssimulation Flugzeugaerodynamik Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=021190199&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT thouaultnicolas aerodynamicinvestigationsongenericfaninwingconfigurations |