Excitation of heat and momentum transport in turbulent wake flow:
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| Main Author: | |
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| Format: | Thesis Book |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20140130-1137469-0-1 Inhaltsverzeichnis |
| Physical Description: | XXIII, 182 S. Ill., graph. Darst. |
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| 100 | 1 | |a Brunner, Tobias Christoph |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Excitation of heat and momentum transport in turbulent wake flow |c Tobias Christoph Brunner |
| 264 | 1 | |c 2013 | |
| 300 | |a XXIII, 182 S. |b Ill., graph. Darst. | ||
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| 502 | |a München, Techn. Univ., Diss., 2014 | ||
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| 912 | |a ebook | ||
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Record in the Search Index
| _version_ | 1804152161924284416 |
|---|---|
| adam_text | TECHNISCHE UNIVERSITAT MUNCHEN
INSTITUT FUR ENERGIETECHNIK
LEHRSTUHL FUR THERMODYNAMIK
EXCITATION OF HEAT AND MOMENTUM TRANSPORT
IN TURBULENT WAKE FLOW
TOBIAS CHRISTOPH BRUNNER
VOLLSTANDIGER ABDRUCK DER VON DER FAKULTAT FUR MASCHINENWESEN DER
TECHNISCHEN UNIVERSITAT MUNCHEN ZUR ERLANGUNG DES AKADEMISCHEN GRADES
EINES
DOKTOR-INGENIEURS
GENEHMIGTEN DISSERTATION.
VORSITZENDER: UNIV.-PROF. DR.-ING. THOMAS SATTELMAYER
PRTIFER DER DISSERTATION:
1. APL.-PROF. DR.-ING., DR.-ING. HABIL. HANS WENGLE
2. UNIV.-PROF. DR.-ING. DR.-ING. E.H. FRANZ MAYINGER (EM.)
3. UNIV.-PROF. DR.-ING. NIKOLAUS A. ADAMS
DIE DISSERTATION WURDE AM 05.04.2013 BEI DER TECHNISCHEN UNIVERSITAT
MUNCHEN EINGE
REICHT UND DURCH DIE FAKULTAT FUR MASCHINENWESEN AM 30.11.2013
ANGENOMMEN.
HTTP://D-NB.INFO/1052231799
V
TABLE OF CONTENTS
ACKNOWLEDGEMENT I
ABSTRACT II
ZUSAMMENFASSUNG III
TABLE OF CONTENTS V
NOMENCLATURE VIII
LIST OF FIGURES XVIII
LIST OF TABLES XXIII
1 INTRODUCTION 1
1.1 THE REYNOLDS ANALOGY, SIMILARITY AND DISSIMILARITY BETWEEN
MOMENTUM AND HEAT TRANSPORT 4
1.2 PROBLEM FORMULATION - FLOW PAST A SQUARE ROD CLOSE TO A HEATED WALL
6
1.3 A TWOFOLD APPROACH - EXPERIMENTAL AND NUMERICAL INVESTIGATION 7
1.4 OBJECTIVES AND CONTRIBUTIONS TO ENHANCE THE STATE OF THE ART 9
2 EXPERIMENTAL APPROACH 11
2.1 EXPERIMENTAL SETUP 12
2.1.1 EXPERIMENTAL FACILITY 12
2.1.2 FLOW REGIME AND TEST SECTION 14
2.1.3 MEASURING AND CONTROL SETUP 16
2.2 MEASURING TECHNIQUES AND EXPERIMENTAL RESULTS 20
2.2.1 LIMITATIONS OF THE PRESTON-PATEL METHOD FOR MEASURING SKIN
FRICTION IN TURBULENT WALL-BOUNDED WAKE FLOW 21
2.2.2 SMOKE FLOW VISUALIZATION AND LARGE SCALE VORTEX STRUCTURE 26
2.2.3 HOT-WIRE ANEMOMETRY, POWER SPECTRA AND VELOCITY FLUCTUATIONS 27
2.2.4 LIQUID CRYSTAL THERMOGRAPHY AND WALL TEMPERATURE DISTRIBUTION 28
2.2.5 SUMMARY OF EXPERIMENTAL RESULTS 35
3 NUMERICAL APPROACH 39
3.1 COMPUTATIONAL METHODS - CHOICE OF METHOD AND TOOL 39
3.1.1 TURBULENCE THEORY - KOLMOGOROV SCALES 40
3.1.2 DIRECT NUMERICAL SIMULATION - DNS 42
VI
3.1.3 REYNOLDS-AVERAGED NAVIER-STOKES SIMULATION - RANS 42
3.1.4 LARGE-EDDY SIMULATION - LES .43
3.1.5 MGLET - MULTI-GRID LARGE-EDDY TURBULENCE SIMULATION TOOL 45
3.2 MATHEMATICAL SETUP - BASE EQUATIONS AND RESTRICTIONS 46
3.2.1 GENERAL INTEGRAL FORMULATION OF MASS, MOMENTUM AND ENERGY
CONSERVATION 46
3.2.2 ADAPTED CONSERVATION LAWS FOR INCOMPRESSIBLE VISCOUS IDEAL
FLUID FLOW WITH PASSIVE HEAT TRANSPORT 49
3.2.3 VOLUME-BALANCE FILTERING 51
3.2.4 SUBGRID-SCALE CLOSURE 52
3.2.5 DIMENSIONLESS FILTERED SET OF BASE EQUATIONS 53
3.3 BOUNDARY AND INITIAL CONDITIONS 54
3.3.1 TURBULENT INFLOW BOUNDARY CONDITION 54
3.3.2 OUTFLOW BOUNDARY CONDITIONS 58
3.3.2.1 OUTFLOW 58
3.3.2.2 FREE-STREAM 59
3.3.3 PERIODIC BOUNDARY CONDITIONS 59
3.3.4 WALL BOUNDARY TREATMENT 59
T
3.3.5 INITIAL CONDITIONS 60
3.4 COMPUTED CASES, APPLIED NUMERICAL SCHEMES AND EVALUATION STRATEGY 62
3.4.1 COMPUTATIONAL DOMAIN, BOUNDARY SETTINGS AND GRID STRUCTURE 62
3.4.2 APPLIED NUMERICAL SCHEMES 68
3.4.3 EVALUATION STRATEGY 69
4 RESULTS AND DISCUSSION 73
4.1 TURBULENT BOUNDARY LAYER ALONG A HEATED FLAT PLATE 73
4.2 FLOW PAST A SQUARE CYLINDER PLACED IN THE TURBULENT BOUNDARY LAYER
ALONG A HEATED FLAT PLATE 86
4.2.1 STATE-OF-THE-ART - PROBLEM CLASSIFICATION 86
4.2.1.1 VORTEX FORMATION AND SHEDDING FROM BLUFF BODIES IN
TURBULENT FREE-STREAM 86
4.2.1.2 TURBULENT FLOW PAST CIRCULAR CYLINDERS WITH A NEARBY WALL 91
4.2.1.3 TURBULENT FLOW PAST A SQUARE CYLINDER WITH A NEARBY WALL 92
4.2.1.4 HEAT TRANSFER ENHANCEMENT AND DISSIMILARITY BETWEEN
MOMENTUM AND HEAT TRANSFER ALONG A HEATED WALL IN THE WAKE
OF A SQUARE ROD 96
4.2.2 TIME-MEAN QUANTITIES 98
4.2.3 VORTEX FORMATION AND SHEDDING MECHANISMS 102
4.2.4 HEAT TRANSPORT ENHANCING FLOW MECHANISMS 108
4.2.5 DISSIMILARITY BETWEEN MOMENTUM AND HEAT TRANSPORT IN THE WAKE
REGION 115
VII
4.3 PASSIVE WAKE FLOW MANIPULATION: VARYING DISTANCE BETWEEN SQUARE
ROD AND HEATED FLAT PLATE 118
4.3.1 INFLUENCE ON VORTEX FORMATION, SHEDDING, HEAT TRANSFER, DRAG AND
LIFT 120
4.3.2 DISSIMILARITY BETWEEN WALL HEAT TRANSFER AND SKIN FRICTION 133
4.4 ACTIVE WAKE FLOW MANIPULATION: OSCILLATORY INJECTION FROM THE ROD
INTO THE FAR-WALL BOUNDARY LAYER 138
4.5 DESIGN CRITERIA FOR A KARMAN VORTEX HEAT EXCHANGER 143
5 CONCLUSIONS 145
APPENDIX 151
A NUMERICAL PROCEDURE 151
A.L DISCRETIZATION 152
M
A. 1.1 MASS, MOMENTUM / VELOCITY 152
A. 1.2 ENERGY/TEMPERATURE 152
A.2 TIME INTEGRATION 157
A.2.1 MOMENTUM / VELOCITY 157
A.2.2 ENERGY/TEMPERATURE 157
A.3 DIFFUSIVE WALL CORRECTION - WALL FUNCTIONS 158
A.3.1 MOMENTUM / VELOCITY 159
A.3.2 ENERGY/TEMPERATURE 160
A.3.2.1 WALL HEAT FLUX BOUNDARY CONDITION 161
A.3.2.2 WALL TEMPERATURE BOUNDARY CONDITION 162
A.4 VELOCITY-PRESSURE COUPLING / ITERATIVE PRESSURE CORRECTION
METHOD 162
A.5 SUBGRID-SCALE MODELING 163
A.5.1 MOMENTUM / VISCOSITY 163
A.5.2 ENERGY / DIFFUSIVITY 164
A.6 STATISTICAL DATA ACQUIREMENT AND POST-PROCESSING 165
B LES MEAN INFLOW PROFILES 167
C LIST OF WEB LINKS 170
REFERENCES 171
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| physical | XXIII, 182 S. Ill., graph. Darst. |
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| spelling | Brunner, Tobias Christoph Verfasser aut Excitation of heat and momentum transport in turbulent wake flow Tobias Christoph Brunner 2013 XXIII, 182 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Techn. Univ., Diss., 2014 Mit einer Zssfassung in dt. Sprache (DE-588)4113937-9 Hochschulschrift gnd-content Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:91-diss-20140130-1137469-0-1 http://mediatum.ub.tum.de/node?id=1137469 Verlag kostenfrei Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20140130-1137469-0-1 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027272760&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Brunner, Tobias Christoph Excitation of heat and momentum transport in turbulent wake flow |
| subject_GND | (DE-588)4113937-9 |
| title | Excitation of heat and momentum transport in turbulent wake flow |
| title_auth | Excitation of heat and momentum transport in turbulent wake flow |
| title_exact_search | Excitation of heat and momentum transport in turbulent wake flow |
| title_full | Excitation of heat and momentum transport in turbulent wake flow Tobias Christoph Brunner |
| title_fullStr | Excitation of heat and momentum transport in turbulent wake flow Tobias Christoph Brunner |
| title_full_unstemmed | Excitation of heat and momentum transport in turbulent wake flow Tobias Christoph Brunner |
| title_short | Excitation of heat and momentum transport in turbulent wake flow |
| title_sort | excitation of heat and momentum transport in turbulent wake flow |
| topic_facet | Hochschulschrift |
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