Tonal noise of axial fans induced by large-scale inflow distortions:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Aachen
Shaker Verlag
2016
|
| Schriftenreihe: | Berichte aus der Strömungstechnik
|
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | XVI, 133 Seiten Illustrationen, Diagramme 21 cm, 233 g |
| ISBN: | 9783844042795 3844042792 |
Internformat
MARC
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| 100 | 1 | |a Sturm, Michael |d 1983- |e Verfasser |0 (DE-588)1095779419 |4 aut | |
| 245 | 1 | 0 | |a Tonal noise of axial fans induced by large-scale inflow distortions |c Michael Sturm |
| 264 | 1 | |a Aachen |b Shaker Verlag |c 2016 | |
| 300 | |a XVI, 133 Seiten |b Illustrationen, Diagramme |c 21 cm, 233 g | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 490 | 0 | |a Berichte aus der Strömungstechnik | |
| 502 | |b Dissertation |c Universität Siegen |d 2015 | ||
| 546 | |a Enthält Zusammenfassung in deutscher Sprache | ||
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| 650 | 0 | 7 | |a Schallabstrahlung |0 (DE-588)4052019-5 |2 gnd |9 rswk-swf |
| 653 | |a Aeroacoustics | ||
| 653 | |a Aerodynamic Sound | ||
| 653 | |a Turbomachinery | ||
| 655 | 7 | |0 (DE-588)4113937-9 |a Hochschulschrift |2 gnd-content | |
| 689 | 0 | 0 | |a Axialventilator |0 (DE-588)4205790-5 |D s |
| 689 | 0 | 1 | |a Schallabstrahlung |0 (DE-588)4052019-5 |D s |
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| 999 | |a oai:aleph.bib-bvb.de:BVB01-028948775 | ||
Datensatz im Suchindex
| _version_ | 1804176186229653504 |
|---|---|
| adam_text | CONTENTS
NOMENCLATURE IX
*
INTRODUCTION 1
1.1 BACKGROUND AND
MOTIVATION..........................................................................................1
1.2
OBJECTIVES....................................................................................................................10
1.3 THESIS
OUTLINE.............................................................................................................11
2 LITERATURE REVIEW 13
2.1 INFLOW DISTURBANCES INTERACTION
.................................................................................
13
2.2 ANNULAR BOUNDARY LAYER
INTERACTION.........................................................................23
2.3 CRITICAL
ASSESSMENT....................................................................................................
25
3 METHODOLOGY 27
3.1 SIGNAL
PROCESSING.......................................................................................................
27
3.1.1 SPECTRAL
ANALYSIS............................................................................................
27
3.1.2 FILTERING
TECHNIQUE........................................................................................
29
3.1.3 SHORT-TIME FOURIER
TRANSFORM.......................................................................30
3.2 GENERIC TEST
FAN........................................................................................................
30
3.3
EXPERIMENTS................................................................................................................
32
3.3.1 FAN TEST
FACILITY.............................................................................................
32
3.3.2 AERODYNAMIC PERFORMANCE
MEASUREMENTS....................................................33
3.3.3 INFLOW CONTROL
DEVICES..................................................................................
34
3.3.4 ACOUSTIC
MEASUREMENTS.................................................................................35
3.3.5 FLOW
VISUALIZATION.........................................................................................
36
33.6 FLOW FIELD
MEASUREMENTS..............................................................................
37
3.3.7 SURFACE PRESSURE
MEASUREMENTS.....................................................................
39
3.4 NUMERICAL
SIMULATIONS...............................................................................................
40
3.4.1 PRELIMINARY
REMARKS......................................................................................
40
3.4.2 CLASSICAL CFD
APPROACHES............................................................................41
3.4.2.1 GOVERNING
EQUATIONS....................................................................42
]ALL
RANS
APPROACH.............................................................................43
3.4.2.3 SAS
APPROACH.................................................................................46
3.4.3 LATTICE-BOLTZMANN
APPROACH.........................................................................
47
VI CONTENTS
3.4.4 NUMERICAL
SETUPS.......................................................................................
49
3.4.4 1 SELECTION OF THE DIFFERENT APPROACHES
...........................................
49
3.4.4.2 SCALE ADAPTIVE SIMULATIONS (SAS)
................................................
50
3.4.4.3 REYNOLDS-AVERAGED NAVIER-STOKES SIMULATIONS
(RANS)..........51
3.4.4.4 LBM
SIMULATIONS.............................................................................52
3.5 ACOUSTIC PREDICTION METHODS
.................................................................................
55
3.5.1 FFOWCS WILLIAMS HAWKINGS
APPROACH..........................................................55
3.5.2 TONAL SOUND
MODEL........................................................................................57
4 EXPERIMENTAL CHARACTERIZATION OF BPF SOUND 59
4.1 OVERALL AERODYNAMIC AND ACOUSTIC PERFORMANCE
.....................................................
59
4.2 IDENTIFICATION OF SOURCE
MECHANISM.........................................................................
61
4.2.1 IMPACT OF OPERATING
POINT.............................................................................
61
4.2.2 IMPACT OF INFLOW
CONDITIONER.........................................................................63
4.2.3 IMPACT OF UPSTREAM DUCT
LENGTH...................................................................63
4.2.4 UNSTEADINESS OF TONAL
SOUND.........................................................................65
4.2.5 IMPACT OF WALL
DISTANCE.................................................................................69
4.3 CHAPTER
CONCLUSIONS..................................................................................................69
5 INHOMOGENEOUS IN N W AS A CAUSE 71
5.1 EXPERIMENTAL FLOW FIELD AT THE
INTAKE......................................................................
71
5.2 FLUCTUATING SURFACE PRESSURE DATA UNDER DIFFERENT INFLOW CONDITIONS
*******75
5.2.1 TIME DOMAIN
ANALYSIS..................................................................................75
5.2.2 BLADE PRESSURE CORRELATION
TECHNIQUE...........................................................76
5.3 UNSTEADY FLOW
SIMULATIONS.......................................................................................81
5.3.1 AERODYNAMIC IMPACT OF INFLOW
DISTORTION.....................................................82
5.3.2 TONAL SOUND
PREDICTION..................................................................................88
5.4 CHAPTER
CONCLUSIONS..................................................................................................91
6 IMPACT OF THE LARGE-SCALE INLET PLENUM 93
6.1 FLOW
VISUALIZATIONS....................................................................................................93
6.2 EXPERIMENTAL STUDY WITH VARIOUS INLET PLENUMS
......................................................
94
6.3 NUMERICAL STUDY WITH VARIOUS INLET PLENUMS
...........................................................
97
6.3.1 RANS SIMULATION OF THE BASELINE CONFIGURATION
.........................................
97
6.3.2 LBM SIMULATION OF THE BASELINE CONFIGURATION
...........................................
98
6.3.3 VARIATION OF THE INLET
PLENUM.......................................................................
101
6.4 CHAPTER
CONCLUSIONS.............................................................................................106
7 SUMMARY UND CONCLUSIONS 107
APPENDIX A: EXPERIMENTAL UNCERTAINTY ANALYSIS 111
APPENDIX B: AERODYNAMIC AND ACOUSTIC IMPACT OF THE INFLOW CONDITIONER
115
APPENDIX C: CALIBRATION OF BLADE PRESSURE TRANSDUCERS 119
REFERENCES 123
|
| any_adam_object | 1 |
| author | Sturm, Michael 1983- |
| author_GND | (DE-588)1095779419 |
| author_facet | Sturm, Michael 1983- |
| author_role | aut |
| author_sort | Sturm, Michael 1983- |
| author_variant | m s ms |
| building | Verbundindex |
| bvnumber | BV043533139 |
| classification_rvk | ZL 5770 ZQ 3860 |
| ctrlnum | (OCoLC)951593585 (DE-599)DNB1082213373 |
| discipline | Maschinenbau / Maschinenwesen Mess-/Steuerungs-/Regelungs-/Automatisierungstechnik / Mechatronik |
| format | Thesis Book |
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| id | DE-604.BV043533139 |
| illustrated | Illustrated |
| indexdate | 2024-07-10T07:28:11Z |
| institution | BVB |
| institution_GND | (DE-588)1064118135 |
| isbn | 9783844042795 3844042792 |
| language | English |
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| physical | XVI, 133 Seiten Illustrationen, Diagramme 21 cm, 233 g |
| publishDate | 2016 |
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| publisher | Shaker Verlag |
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| spelling | Sturm, Michael 1983- Verfasser (DE-588)1095779419 aut Tonal noise of axial fans induced by large-scale inflow distortions Michael Sturm Aachen Shaker Verlag 2016 XVI, 133 Seiten Illustrationen, Diagramme 21 cm, 233 g txt rdacontent n rdamedia nc rdacarrier Berichte aus der Strömungstechnik Dissertation Universität Siegen 2015 Enthält Zusammenfassung in deutscher Sprache Strömungsakustik (DE-588)4116645-0 gnd rswk-swf Axialventilator (DE-588)4205790-5 gnd rswk-swf Schallabstrahlung (DE-588)4052019-5 gnd rswk-swf Aeroacoustics Aerodynamic Sound Turbomachinery (DE-588)4113937-9 Hochschulschrift gnd-content Axialventilator (DE-588)4205790-5 s Schallabstrahlung (DE-588)4052019-5 s Strömungsakustik (DE-588)4116645-0 s DE-604 Shaker Verlag (DE-588)1064118135 pbl DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=028948775&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Sturm, Michael 1983- Tonal noise of axial fans induced by large-scale inflow distortions Strömungsakustik (DE-588)4116645-0 gnd Axialventilator (DE-588)4205790-5 gnd Schallabstrahlung (DE-588)4052019-5 gnd |
| subject_GND | (DE-588)4116645-0 (DE-588)4205790-5 (DE-588)4052019-5 (DE-588)4113937-9 |
| title | Tonal noise of axial fans induced by large-scale inflow distortions |
| title_auth | Tonal noise of axial fans induced by large-scale inflow distortions |
| title_exact_search | Tonal noise of axial fans induced by large-scale inflow distortions |
| title_full | Tonal noise of axial fans induced by large-scale inflow distortions Michael Sturm |
| title_fullStr | Tonal noise of axial fans induced by large-scale inflow distortions Michael Sturm |
| title_full_unstemmed | Tonal noise of axial fans induced by large-scale inflow distortions Michael Sturm |
| title_short | Tonal noise of axial fans induced by large-scale inflow distortions |
| title_sort | tonal noise of axial fans induced by large scale inflow distortions |
| topic | Strömungsakustik (DE-588)4116645-0 gnd Axialventilator (DE-588)4205790-5 gnd Schallabstrahlung (DE-588)4052019-5 gnd |
| topic_facet | Strömungsakustik Axialventilator Schallabstrahlung Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=028948775&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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