Large eddy simulation of low Mach number flows:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Aachen
Shaker
2007
|
| Schriftenreihe: | Berichte aus dem Maschinenbau
|
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | VIII, 167 S. Ill., graph. Darst. |
| ISBN: | 9783832268305 |
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Datensatz im Suchindex
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| adam_text | LARGE-EDDY SIMULATION OF LOW MACH NUMBER FLOWS VON DER FAKULTAT FUR
MASCHINENWESEN DER RHEINISCH-WESTFALISCHEN TECHNISCHEN HOCHSCHULE AACHEN
ZUR ERLANGUNG DES AKADEMISCHEN GRADES EINES DOKTORS DER
INGENIEURWISSENSCHAFTEN GENEHMIGTE DISSERTATION VORGELEGT VON NOURI
AMHAMED ALKISHRIWI AUS YEFREN, LIBYEN BERICHTER: UNIV.-PROF.-DR.-ING.
WOLFGANG SCHRODER UNIV.-PROF. MAREK BEHR, PH.D. TAG DER MUNDLICHEN
PRIIFUNG: 12. OKTOBER 2007 CONTENTS CONTENTS ABSTRACT I NOMENCLATURE V 1
INTRODUCTION 1 2 GOVERNING EQUATIONS 7 2.1 THE NAVIER-STOKES EQUATIONS 8
2.2 DIMENSIONLESS PARAMETERS AND NONDIMENSIONAL FORM OF THE EQUATIONS
.... 10 2.3 NAVIER-STOKES EQUATIONS FORMULATED FOR MOVING GRIDS 12 2.4
GENERALIZED COORDINATE SYSTEM 13 2.5 INITIAL AND BOUNDARY CONDITIONS 17
2.5.1 INITIAL CONDITIONS 17 2.5.2 SOLID WALL CONDITIONS 18 2.5.3
PERIODIC BOUNDARY CONDITIONS 18 2.5.4 SYMMETRY BOUNDARY CONDITIONS 19
2.5.5 FAR-FIELD BOUNDARY CONDITIONS 19 3 TURBULENCE AND LARGE-EDDY
SIMULATION 21 3.1 INTRODUCTION 21 3.2 CHARACTERISTICS OF TURBULENT FLOW
24 3.2.1 ENERGY CASCADE 25 3.3 SPATIAL FILTERING AND THE LES EQUATIONS
26 3.4 SUBGRID-SCALE MODELING 30 3.5 IMPLICIT LES- MILES MODEL 32 4
PRECONDITIONING METHOD 34 4.1 INTRODUCTION 34 4.2 THE CHARACTERISTIC
CONDITION NUMBER AND THE DIFFICULTIES WITH THE ZERO MACH NUMBER LIMIT 35
4.3 PRECONDITIONED GOVERNING EQUATIONS 38 4.3.1 IMPLEMENTATION OF THE
PRECONDITIONING 38 4.3.2 ANALYSIS OF DIFFERENT PRECONDITIONER 39 4.3.3
PRECONDITIONED EIGENVALUES 41 4.4 ACCURACY PRESERVATION BY APPLYING LOW
MACH PRECONDITIONING 42 III 4.4.1 ARTIFICIAL DISSIPATION MODIFICATIONS
42 5 NUMERICAL METHODS 44 5.1 FINITE VOLUME METHOD 44 5.2 SPATIAL
DISCRETIZATION 45 5.2.1 AUSM SCHEME 46 5.2.2 DISCRETIZATION OF THE
VISCOUS FLUX 48 5.3 BASIC TIME-STEPPING SCHEME 49 5.3.1 TIME STEP AT 50
5.4 DUAL-TIME STEPPING METHOD 50 5.5 CONVERGENCE ACCELERATION 51 5.5.1
LOCAL TIME-STEPPING SCHEME 52 5.5.2 MULTIGRID METHOD 52 5.5.3 MULTIGRID
CONVERGENCE IMPROVEMENT 54 5.6 HIGH PERFORMANCE COMPUTING 54 6
VALIDATION 56 6.1 PRELIMINARY TWO-DIMENSIONAL COMPUTATIONS 56 6.1.1 FLOW
PAST A CIRCULAR CYLINDER 56 6.1.2 FLOW OVER NACA0012 57 6.2 LARGE-EDDY
SIMULATION OF TURBULENT FLOWS 58 6.3 CHANNEL FLOW 58 6.4 CYLINDER FLOW
59 6.5 EFFICIENCY ANALYSIS 60 7 LARGE-EDDY SIMULATION OF TUNDISH FLOW 62
7.1 INTRODUCTION 62 7.2 NUMERICAL SETUP AND BOUNDARY CONDITIONS 65 7.3
PIPE FLOW 68 7.4 TUNDISH RESULTS * . . . . 69 7.4.1 TUNDISH FLOW WITHOUT
TURBO-STOPPER 69 7.4.2 TUNDISH FLOW WITH TURBO-STOPPER 71 7.5 SUMMARY 72
8 LARGE-EDDY SIMULATION OF ROTATING TURBULENT CHANNEL FLOW 73 8.1
INTRODUCTION 73 8.2 BOUNDARY CONDITIONS AND GRID RESOLUTION 74 8.3
RESULTS 75 8.4 TWO-POINT CORRELATION 76 8.5 COHERENT STRUCTURES 77 8.6
SUMMARY 78 9 CONCLUSION 79 CONTENTS REFERENCES 81 FIGURES 91 APPENDICES
160 A TRANSFORMATION INTO GENERALIZED COORDINATES 160 B TRANSFORMATION
MATRICES 162 B.I SYMMETRIZING VARIABLES 162 B.2 ENTROPY VARIABLES 163
B.3 PRIMITIVE VARIABLES 163 B.4 ALTERNATIVE PRIMITIVE VARIABLES 164 C
QUASILINEAR FORM OF THE EULER EQUATIONS 166
|
| adam_txt |
LARGE-EDDY SIMULATION OF LOW MACH NUMBER FLOWS VON DER FAKULTAT FUR
MASCHINENWESEN DER RHEINISCH-WESTFALISCHEN TECHNISCHEN HOCHSCHULE AACHEN
ZUR ERLANGUNG DES AKADEMISCHEN GRADES EINES DOKTORS DER
INGENIEURWISSENSCHAFTEN GENEHMIGTE DISSERTATION VORGELEGT VON NOURI
AMHAMED ALKISHRIWI AUS YEFREN, LIBYEN BERICHTER: UNIV.-PROF.-DR.-ING.
WOLFGANG SCHRODER UNIV.-PROF. MAREK BEHR, PH.D. TAG DER MUNDLICHEN
PRIIFUNG: 12. OKTOBER 2007 CONTENTS CONTENTS ABSTRACT I NOMENCLATURE V 1
INTRODUCTION 1 2 GOVERNING EQUATIONS 7 2.1 THE NAVIER-STOKES EQUATIONS 8
2.2 DIMENSIONLESS PARAMETERS AND NONDIMENSIONAL FORM OF THE EQUATIONS
. 10 2.3 NAVIER-STOKES EQUATIONS FORMULATED FOR MOVING GRIDS 12 2.4
GENERALIZED COORDINATE SYSTEM 13 2.5 INITIAL AND BOUNDARY CONDITIONS 17
2.5.1 INITIAL CONDITIONS 17 2.5.2 SOLID WALL CONDITIONS 18 2.5.3
PERIODIC BOUNDARY CONDITIONS 18 2.5.4 SYMMETRY BOUNDARY CONDITIONS 19
2.5.5 FAR-FIELD BOUNDARY CONDITIONS 19 3 TURBULENCE AND LARGE-EDDY
SIMULATION 21 3.1 INTRODUCTION 21 3.2 CHARACTERISTICS OF TURBULENT FLOW
24 3.2.1 ENERGY CASCADE 25 3.3 SPATIAL FILTERING AND THE LES EQUATIONS
26 3.4 SUBGRID-SCALE MODELING 30 3.5 IMPLICIT LES- MILES MODEL 32 4
PRECONDITIONING METHOD 34 4.1 INTRODUCTION 34 4.2 THE CHARACTERISTIC
CONDITION NUMBER AND THE DIFFICULTIES WITH THE ZERO MACH NUMBER LIMIT 35
4.3 PRECONDITIONED GOVERNING EQUATIONS 38 4.3.1 IMPLEMENTATION OF THE
PRECONDITIONING 38 4.3.2 ANALYSIS OF DIFFERENT PRECONDITIONER 39 4.3.3
PRECONDITIONED EIGENVALUES 41 4.4 ACCURACY PRESERVATION BY APPLYING LOW
MACH PRECONDITIONING 42 III 4.4.1 ARTIFICIAL DISSIPATION MODIFICATIONS
42 5 NUMERICAL METHODS 44 5.1 FINITE VOLUME METHOD 44 5.2 SPATIAL
DISCRETIZATION 45 5.2.1 AUSM SCHEME 46 5.2.2 DISCRETIZATION OF THE
VISCOUS FLUX 48 5.3 BASIC TIME-STEPPING SCHEME 49 5.3.1 TIME STEP AT 50
5.4 DUAL-TIME STEPPING METHOD 50 5.5 CONVERGENCE ACCELERATION 51 5.5.1
LOCAL TIME-STEPPING SCHEME 52 5.5.2 MULTIGRID METHOD 52 5.5.3 MULTIGRID
CONVERGENCE IMPROVEMENT 54 5.6 HIGH PERFORMANCE COMPUTING 54 6
VALIDATION 56 6.1 PRELIMINARY TWO-DIMENSIONAL COMPUTATIONS 56 6.1.1 FLOW
PAST A CIRCULAR CYLINDER 56 6.1.2 FLOW OVER NACA0012 57 6.2 LARGE-EDDY
SIMULATION OF TURBULENT FLOWS 58 6.3 CHANNEL FLOW 58 6.4 CYLINDER FLOW
59 6.5 EFFICIENCY ANALYSIS 60 7 LARGE-EDDY SIMULATION OF TUNDISH FLOW 62
7.1 INTRODUCTION 62 7.2 NUMERICAL SETUP AND BOUNDARY CONDITIONS 65 7.3
PIPE FLOW 68 7.4 TUNDISH RESULTS * . . . . 69 7.4.1 TUNDISH FLOW WITHOUT
TURBO-STOPPER 69 7.4.2 TUNDISH FLOW WITH TURBO-STOPPER 71 7.5 SUMMARY 72
8 LARGE-EDDY SIMULATION OF ROTATING TURBULENT CHANNEL FLOW 73 8.1
INTRODUCTION 73 8.2 BOUNDARY CONDITIONS AND GRID RESOLUTION 74 8.3
RESULTS 75 8.4 TWO-POINT CORRELATION 76 8.5 COHERENT STRUCTURES 77 8.6
SUMMARY 78 9 CONCLUSION 79 CONTENTS REFERENCES 81 FIGURES 91 APPENDICES
160 A TRANSFORMATION INTO GENERALIZED COORDINATES 160 B TRANSFORMATION
MATRICES 162 B.I SYMMETRIZING VARIABLES 162 B.2 ENTROPY VARIABLES 163
B.3 PRIMITIVE VARIABLES 163 B.4 ALTERNATIVE PRIMITIVE VARIABLES 164 C
QUASILINEAR FORM OF THE EULER EQUATIONS 166 |
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| language | English |
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| spelling | Alkishriwi, Nouri 1969- Verfasser (DE-588)133904121 aut Large eddy simulation of low Mach number flows Nouri Alkishriwi Aachen Shaker 2007 VIII, 167 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Berichte aus dem Maschinenbau Zugl.: Aachen, Techn. Hochsch., Diss., 2007 Unterschallströmung (DE-588)4135418-7 gnd rswk-swf LES Strömung (DE-588)4315616-2 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Unterschallströmung (DE-588)4135418-7 s LES Strömung (DE-588)4315616-2 s DE-604 HEBIS Datenaustausch Darmstadt application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=016487054&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Alkishriwi, Nouri 1969- Large eddy simulation of low Mach number flows Unterschallströmung (DE-588)4135418-7 gnd LES Strömung (DE-588)4315616-2 gnd |
| subject_GND | (DE-588)4135418-7 (DE-588)4315616-2 (DE-588)4113937-9 |
| title | Large eddy simulation of low Mach number flows |
| title_auth | Large eddy simulation of low Mach number flows |
| title_exact_search | Large eddy simulation of low Mach number flows |
| title_exact_search_txtP | Large eddy simulation of low Mach number flows |
| title_full | Large eddy simulation of low Mach number flows Nouri Alkishriwi |
| title_fullStr | Large eddy simulation of low Mach number flows Nouri Alkishriwi |
| title_full_unstemmed | Large eddy simulation of low Mach number flows Nouri Alkishriwi |
| title_short | Large eddy simulation of low Mach number flows |
| title_sort | large eddy simulation of low mach number flows |
| topic | Unterschallströmung (DE-588)4135418-7 gnd LES Strömung (DE-588)4315616-2 gnd |
| topic_facet | Unterschallströmung LES Strömung Hochschulschrift |
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