Linearized flutter investigations of mistuned turbomachinery blading:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | German |
| Veröffentlicht: |
Köln
DLR, Bibliotheks-und Informationswesen
2012
|
| Ausgabe: | Als Ms. gedr. |
| Schriftenreihe: | DLR, Deutsches Zentrum für Luft- und Raumfahrt e.V. in der Helmholtz-Gemeinschaft Forschungsbericht
2011,02 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | XXVIII, 168 S. Ill., graph. Darst. 21 cm |
Internformat
MARC
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| 245 | 1 | 0 | |a Linearized flutter investigations of mistuned turbomachinery blading |c Markus May |
| 246 | 1 | 3 | |a Linearisierte Flatteruntersuchungen an verstimmten Turbomaschinenbeschaufelungen |
| 250 | |a Als Ms. gedr. | ||
| 264 | 1 | |a Köln |b DLR, Bibliotheks-und Informationswesen |c 2012 | |
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| 490 | 1 | |a Forschungsbericht / DLR, Deutsches Zentrum für Luft- und Raumfahrt e.V. in der Helmholtz-Gemeinschaft |v 2011,02 | |
| 502 | |a Zugl.: Berlin, Techn. Univ., Diss., 2011 u.d.T.: May, Markus: Linearisierte Flatteruntersuchungen an verstimmten Turbomaschinenbeschaufelungen | ||
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Datensatz im Suchindex
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|---|---|
| adam_text | IMAGE 1
LIST O F FIGURES XIX
LIST O F TABLES XXI
NOMENCLATURE XXIII
1 INTRODUCTION 1
1.1 AEROELASTIC P H E N O M E N A I N TURBOMACHINES 1
1.2 STATE OF THE A R T 3
1.3 OBJECTIVES A N D OUTLINE OF T H E PRESENT W O R K 5
2 THEORETICAL CONCEPTS 7
2.1 DRIVEN H A R M O N I C OSCILLATOR 7
2.1.1 EQUATION OF MOTION A N D PHYSICAL INTERPRETATION 8
2.1.2 D A M P I N G DEFINITIONS A N D IDENTIFICATION 10
2.1.3 ENERGY CONSIDERATIONS 12
2.2 AEROELASTIC M O D E L I N G OF TURBOMACHINERY BLADING 15
2.2.1 STRUCTURAL EIGENBEHAVIOR O F T H E ROTATIONALLY SYMMETRIC RO TOR
16
2.2.2 U N S T E A D Y A E R O D Y N A M I C L O A D S 21
2.2.3 INFLUENCE COEFFICIENTS 22
2.2.4 FLUTTER STABILITY EQUATIONS 25
2.2.5 AEROELASTIC SIMILARITY PARAMETERS 26
2.3 ENERGY M E T H O D AS SOLUTION STRATEGY 28
2.3.1 WORK P E R CYCLE A N D GENERALIZED AERODYNAMIC FORCE . . . . 28
2.3.2 A E R O D Y N A M I C D A M P I N G A N D LOCAL EXCITATION 30
2.4 REDUCED O R D E R M O D E L I N G 33
2.4.1 STATE SPACE REPRESENTATION 34
2.4.2 FREQUENCY M I S T U N I N G A N D AERODYNAMIC A S Y M M E T R Y .
. . . 38
2.4.3 MULTIDISCIPLINARY DESIGN OPTIMIZATION 44
2.4.4 C O U P L I N G OF E I G E N M O D E FAMILIES 47
HTTP://D-NB.INFO/1020200596
IMAGE 2
XIV CONTENTS
3 NUMERICAL METHODS 4 9
3.1 AERODYNAMIC TIME ARID FREQUENCY DOMAIN APPROACHES 49
3.1.1 NONLINEAR FLOW SIMULATIONS 51
3.1.2 TIME-LINEARIZATION 51
3.1.3 H A R M O N I C BALANCING 52
3.2 S T A N D A R D NUMERICAL TOOLS 54
3.2.1 G3DMESH 54
3.2.2 TRACE 55
3.2.3 LIN3D 55
3.2.4 ELSA 56
3.2.5 CALCULIX 56
3.3 IMPLEMENTATION OF AETURBO 57
4 PRESENTATION O F TEST CASES 59
4.1 FUTURE - T U D L LA STAGE C O M P R E S S O R 60
4.2 NACA-3506 - EPFL A N N U L A R C A S C A D E 62
4.3 AEROLIGHT - D L R TRANSONIC C O M P R E S S O R ROTOR 64
4.4 BLIDES - UHBR FAN IN DLR TEST RIG 66
5 CAPABILITIES AND LIMITS O F LINEAR AERODYNAMIC METHODS 69
5.1 COMPUTATIONAL EFFICIENCY 69
5.2 RELIABILITY 73
5.2.1 D E P E N D E N C Y O N STEADY-STATE FLOW FIELD 73
5.2.2 A M P L I T U D E LIMITATIONS 76
5.2.3 SHOCK MOTION 77
6 SENSITIVITY ANALYSIS WITH RESPECT T O FLUTTER-FREE DESIGN 83
6.1 PRELIMINARY INVESTIGATIONS 83
6.2 VARIATION OF SIMILARITY PARAMETERS 86
6.2.1 R E D U C E D FREQUENCY 86
6.2.2 M A S S RATIO 88
6.3 M O D E S H A P E VARIATIONS 91
6.3.1 LINEAR A N D QUADRATIC PATTERNS 91
6.3.2 A M P L I T U D E VARIATIONS O F M O D E SHAPE 92
6.3.3 COMPLEXITY OF M O D E S H A P E 92
6.4 MISTUNING INFLUENCE 94
6.4.1 INDIVIDUAL BLADE M I S T U N I N G 94
6.4.2 H A R M O N I C MISTUNING PATTERN 94
6.4.3 ALTERNATE MISTUNING PATTERN 9 5
6.4.4 O P T I M A L MISTUNING 9 5
6.4.5 FREQUENCY MISTUNING VS. A E R O D Y N A M I C A S Y M M E T R Y 95
6.5 C O U P L I N G OF EIGENMODE FAMILIES 104
6.5.1 AEROELASTIC C O U P L I N G W I T H M O D E FAMILY I F 104
6.5.2 AEROELASTIC C O U P L I N G W I T H M O D E FAMILY I T 104
6.6 DESIGN RULES TO STABILIZE FLUTTER CASES 107
IMAGE 3
CONTENTS XV
7 FLUTTER ANALYSIS O F A HIGHLY LOADED TRANSONIC FAN 109
7.1 STEADY CFD SIMULATIONS 109
7.1.1 PERFORMANCE M A P 109
7.1.2 O P E R A T I N G POINTS 109
7.2 PRE-STRESSED N O R M A L M O D E S ANALYSIS 112
7.3 UNSTEADY C F D SIMULATIONS 114
7.3.1 AEROELASTIC STABILITY D I A G R A M S 114
7.3.2 LOCAL EXCITATION M E C H A N I S M S 115
7.3.3 DESIGN TOOL TO PREDICT T H E FLUTTER B O U N D A R Y 118
7.4 EVALUATION OF T H E M I S T U N I N G CHARACTERISTICS 124
7.4.1 I N D I V I D U A L BLADE RESPONSES TO TRAVELING WAVE EXCITATION .
124 7.4.2 S T A N D I N G WAVE M O D E S OF I N S T R U M E N T E D
BLISK 126
7.4.3 INDIVIDUAL BLADE M O D E S OF INSTRUMENTED BLISK 130
7.5 MODEL U P D A T I N G W I T H EXPERIMENTAL DATA 132
7.5.1 U P D A T I N G PROCEDURE 132
7.5.2 APPLICATION TO T H E AEROELASTIC R O M 134
7.6 EVALUATION O F RESULTS 138
7.6.1 IDENTIFICATION O F SIGNIFICANT PARAMETERS 138
7.6.2 AEROELASTIC CHARACTERIZATION O F T H E UNDERLYING CONFIGURA TION
139
8 CONCLUSION 141
8.1 S U M M A R Y OF RESULTS 141
8.2 FUTURE WORK 142
REFERENCES 156
A CONVENTIONS 157
A.L N U M B E R I N G O F PASSAGES 157
A.L.L SIGN OF INTER-BLADE P H A S E A N G L E A N D N O D A L DIAMETER .
. . . 157
A.1.2 EFFECTIVE DIRECTION OF INFLUENCE COEFFICIENTS 159
A.2 WORK P E R OSCILLATION CYCLE 160
A.2.1 REAL A P P R O A C H 160
A.L.L C O M P L E X A P P R O A C H 161
B UNSTEADY DATA O F UHBR FAN 163
B.L RESULTS OF TIME-LINEARIZED C F D SIMULATIONS 163
B.L.L SPEEDLINE A T 50% ROTATIONAL SPEED 164
B.1.2 SPEEDLINE A T 74% ROTATIONAL SPEED 165
B.1.3 SPEEDLINE AT 82% ROTATIONAL SPEED 166
B.1.4 SPEEDLINE A T 93% ROTATIONAL SPEED 167
B.1.5 SPEEDLINE A T 100% ROTATIONAL SPEED 168
|
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| id | DE-604.BV039936128 |
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| indexdate | 2024-07-10T00:14:31Z |
| institution | BVB |
| language | German |
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| series2 | Forschungsbericht / DLR, Deutsches Zentrum für Luft- und Raumfahrt e.V. in der Helmholtz-Gemeinschaft |
| spelling | May, Markus Verfasser aut Linearized flutter investigations of mistuned turbomachinery blading Markus May Linearisierte Flatteruntersuchungen an verstimmten Turbomaschinenbeschaufelungen Als Ms. gedr. Köln DLR, Bibliotheks-und Informationswesen 2012 XXVIII, 168 S. Ill., graph. Darst. 21 cm txt rdacontent n rdamedia nc rdacarrier Forschungsbericht / DLR, Deutsches Zentrum für Luft- und Raumfahrt e.V. in der Helmholtz-Gemeinschaft 2011,02 Zugl.: Berlin, Techn. Univ., Diss., 2011 u.d.T.: May, Markus: Linearisierte Flatteruntersuchungen an verstimmten Turbomaschinenbeschaufelungen Frequenzverstimmung (DE-588)4837741-7 gnd rswk-swf Flattern Technik (DE-588)4204298-7 gnd rswk-swf Strömungsmaschine (DE-588)4058079-9 gnd rswk-swf Flatterflug (DE-588)4133048-1 gnd rswk-swf Blisk (DE-588)7606328-8 gnd rswk-swf Aeroelastizität (DE-588)4202469-9 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Strömungsmaschine (DE-588)4058079-9 s Aeroelastizität (DE-588)4202469-9 s Flatterflug (DE-588)4133048-1 s Blisk (DE-588)7606328-8 s Frequenzverstimmung (DE-588)4837741-7 s DE-604 Flattern Technik (DE-588)4204298-7 s DLR, Deutsches Zentrum für Luft- und Raumfahrt e.V. in der Helmholtz-Gemeinschaft Forschungsbericht 2011,02 (DE-604)BV011758990 2011,02 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024794278&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | May, Markus Linearized flutter investigations of mistuned turbomachinery blading DLR, Deutsches Zentrum für Luft- und Raumfahrt e.V. in der Helmholtz-Gemeinschaft Forschungsbericht Frequenzverstimmung (DE-588)4837741-7 gnd Flattern Technik (DE-588)4204298-7 gnd Strömungsmaschine (DE-588)4058079-9 gnd Flatterflug (DE-588)4133048-1 gnd Blisk (DE-588)7606328-8 gnd Aeroelastizität (DE-588)4202469-9 gnd |
| subject_GND | (DE-588)4837741-7 (DE-588)4204298-7 (DE-588)4058079-9 (DE-588)4133048-1 (DE-588)7606328-8 (DE-588)4202469-9 (DE-588)4113937-9 |
| title | Linearized flutter investigations of mistuned turbomachinery blading |
| title_alt | Linearisierte Flatteruntersuchungen an verstimmten Turbomaschinenbeschaufelungen |
| title_auth | Linearized flutter investigations of mistuned turbomachinery blading |
| title_exact_search | Linearized flutter investigations of mistuned turbomachinery blading |
| title_full | Linearized flutter investigations of mistuned turbomachinery blading Markus May |
| title_fullStr | Linearized flutter investigations of mistuned turbomachinery blading Markus May |
| title_full_unstemmed | Linearized flutter investigations of mistuned turbomachinery blading Markus May |
| title_short | Linearized flutter investigations of mistuned turbomachinery blading |
| title_sort | linearized flutter investigations of mistuned turbomachinery blading |
| topic | Frequenzverstimmung (DE-588)4837741-7 gnd Flattern Technik (DE-588)4204298-7 gnd Strömungsmaschine (DE-588)4058079-9 gnd Flatterflug (DE-588)4133048-1 gnd Blisk (DE-588)7606328-8 gnd Aeroelastizität (DE-588)4202469-9 gnd |
| topic_facet | Frequenzverstimmung Flattern Technik Strömungsmaschine Flatterflug Blisk Aeroelastizität Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024794278&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV011758990 |
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