Airframe noise prediction using a discontinuous Galerkin method:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Köln
DLR, Bibliotheks- und Informationswesen
2011
|
| Ausgabe: | Als Ms. gedr. |
| Schriftenreihe: | Forschungsbericht / Deutsches Zentrum für Luft- und Raumfahrt
2011,11 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis Inhaltsverzeichnis |
| Beschreibung: | Zsfassung in dt. u. engl. Sprache |
| Beschreibung: | 120 S. Ill., graph. Darst. 21 cm |
Internformat
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Datensatz im Suchindex
| _version_ | 1804148825156222976 |
|---|---|
| adam_text | IMAGE 1
CONTENTS
1 INTRODUCTION 1
1.1 STARTING POINT 1
1.2 A CLOSER LOOK AT THE DGM FROM A CAA POINT OF VIEW 2
1.3 OBJECTIVE A N D APPROACH 6
1.4 ORGANIZATION OF THESIS 6
2 METHOD 7
2.1 ACOUSTIC PERTURBATION EQUATIONS 7
2.1.1 BASICS 7
2.1.2 PARTICULARLY EMPLOYED FORM OF APE 7
2.2 FRPM M E T H O D 8
2.2.1 INTRODUCTION 8
2.2.2 THEORY 9
2.2.3 DISCRETIZATION 10
2.2.4 FAVORABLE CHARACTERISTICS 11
2.3 DISCRETIZATION OF APE VIA DGM 12
2.3.1 APPROXIMATE REPRESENTATION OF FIELD VARIABLES 12
2.3.2 ELEMENTWISE INTEGRATION OF WEIGHTED RESIDUALS 14
2.3.3 SURFACE INTEGRALS 14
2.3.4 LINE INTEGRALS 16
2.3.5 SEMI-DISCRETE DG FORMULATION 19
2.3.6 TIME INTEGRATION 20
2.3.7 ALTERNATIVE MEAN-FLOW/FLUX REPRESENTATIONS 21
2.4 IMPLEMENTATION 24
2.4.1 DG CODE 24
2.4.2 FURTHER SOFTWARE 27
3 RESULTS 29
3.1 PLANE S O U N D W A V E IN M E D I U M A T REST 29
3.1.1 INTRODUCTION 29
3.1.2 COMPUTATIONAL S E T U P 29
3.1.3 EVALUATION OF ORDER OF ACCURACY 31
HTTP://D-NB.INFO/1019646632
IMAGE 2
3.1.4 RESULTS 31
3.1.5 S U M M A R Y OF RESULTS 34
3.2 MONOPOLE IN PLANE WALL 37
3.2.1 INTRODUCTION 37
3.2.2 COMPUTATIONAL SETUP 37
3.2.3 RESULTS 38
3.2.4 S U M M A R Y OF DG RESULTS 40
3.2.5 P I A N O COMPUTATIONS 40
3.3 MONOPOLE IN B O U N D A R Y LAYER 44
3.3.1 INTRODUCTION 44
3.3.2 COMPUTATIONAL SETUP 44
3.3.3 RESULTS 46
3.3.4 S U M M A R Y OF RESULTS 51
3.3.5 PERFORMANCE OF ALTERNATIVE APPROACHES 51
3.4 FLAT PLATE TRAILING EDGE NOISE 56
3.4.1 INTRODUCTION 56
3.4.2 COMPUTATIONAL SETUP 56
3.4.3 RESULTS 59
3.4.4 S U M M A R Y A N D OUTLOOK 64
3.5 AIRFRAME NOISE OF HIGH-LIFT SYSTEMS 65
3.5.1 INTRODUCTION 65
3.5.2 CALCULATION OF SPECTRA 65
3.5.3 FREQUENZ GEOMETRY 66
3.5.4 TIMPAN GEOMETRIES 77
3.5.5 30P30N GEOMETRY 81
3.5.6 S U M M A R Y OF RESULTS 87
4 SUMMARY, CONCLUSIONS, OUTLOOK 89
4.1 S U M M A R Y 89
4.2 CONCLUSIONS 90
4.3 OUTLOOK 90
NOMENCLATURE 92
BIBLIOGRAPHY 98
A COORDINATE SYSTEMS 107
A . L GLOBAL COORDINATE SYSTEM 107
A.2 LOCAL COORDINATE SYSTEM 108
A.3 LOCAL S- , RA COORDINATE SYSTEM 108
A.4 COORD, TRANSFORMATION BETWEEN A N D ( M ) 109
IMAGE 3
B REFERENCE SHAPE FUNCTIONS 111
B.L TWO DIMENSIONS I L L
B.2 O N E DIMENSION I L L
C EDGE NORMAL FLUX COEFFICIENTS 113
D FARFIELD BOUNDARY 115
E LEE CONVERGENCE TESTS 117
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| ctrlnum | (OCoLC)780114891 (DE-599)GBV679520260 |
| dewey-full | 629.1323 |
| dewey-hundreds | 600 - Technology (Applied sciences) |
| dewey-ones | 629 - Other branches of engineering |
| dewey-raw | 629.1323 |
| dewey-search | 629.1323 |
| dewey-sort | 3629.1323 |
| dewey-tens | 620 - Engineering and allied operations |
| discipline | Verkehr / Transport |
| edition | Als Ms. gedr. |
| format | Thesis Book |
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| language | English |
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| spelling | Bauer, Marcus Verfasser aut Airframe noise prediction using a discontinuous Galerkin method Marcus Bauer Als Ms. gedr. Köln DLR, Bibliotheks- und Informationswesen 2011 120 S. Ill., graph. Darst. 21 cm txt rdacontent n rdamedia nc rdacarrier Forschungsbericht / Deutsches Zentrum für Luft- und Raumfahrt 2011,11 Zsfassung in dt. u. engl. Sprache Zugl.: Braunschweig, Techn. Univ., Diss., 2011 Fluglärm (DE-588)4154757-3 gnd rswk-swf Diskontinuierliche Galerkin-Methode (DE-588)4588309-9 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Fluglärm (DE-588)4154757-3 s Diskontinuierliche Galerkin-Methode (DE-588)4588309-9 s DE-604 Deutsches Zentrum für Luft- und Raumfahrt Forschungsbericht 2011,11 (DE-604)BV011758990 2011,11 DE-601 pdf/application http://www.gbv.de/dms/bs/toc/679520260.pdf Inhaltsverzeichnis DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024739765&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Bauer, Marcus Airframe noise prediction using a discontinuous Galerkin method Fluglärm (DE-588)4154757-3 gnd Diskontinuierliche Galerkin-Methode (DE-588)4588309-9 gnd |
| subject_GND | (DE-588)4154757-3 (DE-588)4588309-9 (DE-588)4113937-9 |
| title | Airframe noise prediction using a discontinuous Galerkin method |
| title_auth | Airframe noise prediction using a discontinuous Galerkin method |
| title_exact_search | Airframe noise prediction using a discontinuous Galerkin method |
| title_full | Airframe noise prediction using a discontinuous Galerkin method Marcus Bauer |
| title_fullStr | Airframe noise prediction using a discontinuous Galerkin method Marcus Bauer |
| title_full_unstemmed | Airframe noise prediction using a discontinuous Galerkin method Marcus Bauer |
| title_short | Airframe noise prediction using a discontinuous Galerkin method |
| title_sort | airframe noise prediction using a discontinuous galerkin method |
| topic | Fluglärm (DE-588)4154757-3 gnd Diskontinuierliche Galerkin-Methode (DE-588)4588309-9 gnd |
| topic_facet | Fluglärm Diskontinuierliche Galerkin-Methode Hochschulschrift |
| url | http://www.gbv.de/dms/bs/toc/679520260.pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024739765&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV011758990 |
| work_keys_str_mv | AT bauermarcus airframenoisepredictionusingadiscontinuousgalerkinmethod |
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