Flow structure and stability of a turbocharger centrifugal compressor:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Düsseldorf
VDI-Verl.
2006
|
| Ausgabe: | Als Ms. gedr. |
| Schriftenreihe: | Fortschritt-Berichte VDI
Reihe 7, Strömungstechnik ; 484 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | VIII, 162 S. Ill., graph. Darst. |
| ISBN: | 3183484072 |
Internformat
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| 245 | 1 | 0 | |a Flow structure and stability of a turbocharger centrifugal compressor |c Matthias Schleer |
| 250 | |a Als Ms. gedr. | ||
| 264 | 1 | |a Düsseldorf |b VDI-Verl. |c 2006 | |
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Datensatz im Suchindex
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| adam_text | V
Table of Contents
Abstract VII
Kurzfassung VIII
1 Introduction and Background 1
1.1 Centrifugal compressors: Application and requirements 1
1.2 Turbochargers in automotive applications 2
1.3 Unsteady phenomena in centrifugal compressors 4
1.4 3D flows in compressors with tip clearance 5
1.5 Special features of small turbomachines 6
1.6 Scope, goals and organization of the thesis 7
2 Experimental Set up 9
2.1 Research facilities 9
2.2 Stage and impeller design 13
2.3 Investigated diffuser and tip clearance cases 25
2.4 Experimental techniques 27
2.5 Cylindrical co ordinate System 28
2.6 Averaging of time resolved data 29
2.7 Acquisition and processingof stage Performance data 31
2.8 High frequency response static pressure plugs 32
2.9 Laser Doppier Anemometry (LDA) 33
2.10 Aerodynamic probe technology 38
3 Stability of the Centrifugal Compressor System 47
3.1 Definition of the unsteady phenomena 48
3.2 Characterization of the operating condition 56
3.3 Stability of the compressor stage 60
3.4 Influence of the Reynolds number 66
3.5 Influence of tip clearance width on the Performance 67
3.6 Influence of diffuser shape on the behavior and ränge 69
4 Evolution of the Flow in the Vaneless Diffuser 73
4.1 Circumferentially averaged diffuser flow pattern 74
4.2 3 dimensional flow features in the vaneless diffuser 77
4.3 Vortical structure of the flow in the tip gap region 88
4.4 Improved model for the description of the diffuser flow 92
4.5 Diffuser flow pattern at off design flow rates 94
4.6 Exploitation for the changed flow structure at off design flow conditions.... 106
4.7 Variation of the relative tip clearance width 111
VI Table of Contents
5 Influence of Tip Clearance Width on Stability 119
5.1 Experimental set up and data evaluation 122
5.2 Steady pressure distribution 124
5.3 Blade passing related periodic pressure fluctuation 126
5.4 Non deterministic deviation of the pressure fluctuation 131
5.5 Comparison of the pressure fluctuations for baseline and reduced clearance. 135
5.6 Modelling of the tip clearance flow 141
5.7 Summary of the stability mechanism 146
6 Discussion and Conclusion 147
A References 153
B Frequently used Symbols 161
|
| adam_txt |
V
Table of Contents
Abstract VII
Kurzfassung VIII
1 Introduction and Background 1
1.1 Centrifugal compressors: Application and requirements 1
1.2 Turbochargers in automotive applications 2
1.3 Unsteady phenomena in centrifugal compressors 4
1.4 3D flows in compressors with tip clearance 5
1.5 Special features of small turbomachines 6
1.6 Scope, goals and organization of the thesis 7
2 Experimental Set up 9
2.1 Research facilities 9
2.2 Stage and impeller design 13
2.3 Investigated diffuser and tip clearance cases 25
2.4 Experimental techniques 27
2.5 Cylindrical co ordinate System 28
2.6 Averaging of time resolved data 29
2.7 Acquisition and processingof stage Performance data 31
2.8 High frequency response static pressure plugs 32
2.9 Laser Doppier Anemometry (LDA) 33
2.10 Aerodynamic probe technology 38
3 Stability of the Centrifugal Compressor System 47
3.1 Definition of the unsteady phenomena 48
3.2 Characterization of the operating condition 56
3.3 Stability of the compressor stage 60
3.4 Influence of the Reynolds number 66
3.5 Influence of tip clearance width on the Performance 67
3.6 Influence of diffuser shape on the behavior and ränge 69
4 Evolution of the Flow in the Vaneless Diffuser 73
4.1 Circumferentially averaged diffuser flow pattern 74
4.2 3 dimensional flow features in the vaneless diffuser 77
4.3 Vortical structure of the flow in the tip gap region 88
4.4 Improved model for the description of the diffuser flow 92
4.5 Diffuser flow pattern at off design flow rates 94
4.6 Exploitation for the changed flow structure at off design flow conditions. 106
4.7 Variation of the relative tip clearance width 111
VI Table of Contents
5 Influence of Tip Clearance Width on Stability 119
5.1 Experimental set up and data evaluation 122
5.2 Steady pressure distribution 124
5.3 Blade passing related periodic pressure fluctuation 126
5.4 Non deterministic deviation of the pressure fluctuation 131
5.5 Comparison of the pressure fluctuations for baseline and reduced clearance. 135
5.6 Modelling of the tip clearance flow 141
5.7 Summary of the stability mechanism 146
6 Discussion and Conclusion 147
A References 153
B Frequently used Symbols 161 |
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| dewey-full | 621.630287 |
| dewey-hundreds | 600 - Technology (Applied sciences) |
| dewey-ones | 621 - Applied physics |
| dewey-raw | 621.630287 |
| dewey-search | 621.630287 |
| dewey-sort | 3621.630287 |
| dewey-tens | 620 - Engineering and allied operations |
| discipline | Maschinenbau / Maschinenwesen Physik |
| discipline_str_mv | Maschinenbau / Maschinenwesen Physik |
| edition | Als Ms. gedr. |
| format | Thesis Book |
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| id | DE-604.BV021842947 |
| illustrated | Illustrated |
| index_date | 2024-07-02T16:00:56Z |
| indexdate | 2024-07-09T20:45:54Z |
| institution | BVB |
| isbn | 3183484072 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-015054634 |
| oclc_num | 180712340 |
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| physical | VIII, 162 S. Ill., graph. Darst. |
| publishDate | 2006 |
| publishDateSearch | 2006 |
| publishDateSort | 2006 |
| publisher | VDI-Verl. |
| record_format | marc |
| series | Fortschritt-Berichte VDI |
| series2 | Fortschritt-Berichte VDI : Reihe 7, Strömungstechnik |
| spelling | Schleer, Matthias Verfasser aut Flow structure and stability of a turbocharger centrifugal compressor Matthias Schleer Als Ms. gedr. Düsseldorf VDI-Verl. 2006 VIII, 162 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Fortschritt-Berichte VDI : Reihe 7, Strömungstechnik 484 Zugl.: Zürich, Techn. Hochsch., Diss., 2006 Strömungsmesstechnik (DE-588)4129610-2 gnd rswk-swf Aerodynamik (DE-588)4000589-6 gnd rswk-swf Radialverdichter (DE-588)4176788-3 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Radialverdichter (DE-588)4176788-3 s Aerodynamik (DE-588)4000589-6 s Strömungsmesstechnik (DE-588)4129610-2 s DE-604 Fortschritt-Berichte VDI Reihe 7, Strömungstechnik ; 484 (DE-604)BV001897069 484 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=015054634&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Schleer, Matthias Flow structure and stability of a turbocharger centrifugal compressor Fortschritt-Berichte VDI Strömungsmesstechnik (DE-588)4129610-2 gnd Aerodynamik (DE-588)4000589-6 gnd Radialverdichter (DE-588)4176788-3 gnd |
| subject_GND | (DE-588)4129610-2 (DE-588)4000589-6 (DE-588)4176788-3 (DE-588)4113937-9 |
| title | Flow structure and stability of a turbocharger centrifugal compressor |
| title_auth | Flow structure and stability of a turbocharger centrifugal compressor |
| title_exact_search | Flow structure and stability of a turbocharger centrifugal compressor |
| title_exact_search_txtP | Flow structure and stability of a turbocharger centrifugal compressor |
| title_full | Flow structure and stability of a turbocharger centrifugal compressor Matthias Schleer |
| title_fullStr | Flow structure and stability of a turbocharger centrifugal compressor Matthias Schleer |
| title_full_unstemmed | Flow structure and stability of a turbocharger centrifugal compressor Matthias Schleer |
| title_short | Flow structure and stability of a turbocharger centrifugal compressor |
| title_sort | flow structure and stability of a turbocharger centrifugal compressor |
| topic | Strömungsmesstechnik (DE-588)4129610-2 gnd Aerodynamik (DE-588)4000589-6 gnd Radialverdichter (DE-588)4176788-3 gnd |
| topic_facet | Strömungsmesstechnik Aerodynamik Radialverdichter Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=015054634&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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