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Modelling of data uncertainties on hybrid computers:

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Bibliographische Detailangaben
Weitere beteiligte Personen:	Schneider, Anke (HerausgeberIn)
Format:	Buch
Sprache:	Englisch
Veröffentlicht:	Köln ; Garching b. München ; Berlin ; Braunschweig GRS June 2016
Schriftenreihe:	Gesellschaft für Anlagen- und Reaktorsicherheit: GRS 392
Schlagwörter:	Forschungsbericht
Links:	http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=029230752&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
Umfang:	IX, 187 Seiten Illustrationen, Diagramme
ISBN:	9783944161730

Internformat

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Datensatz im Suchindex

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adam_text	TABLE OF CONTENTS ACKNOWLEDGEMENT ........................................................................................ I ABSTRACT ...................................................................................................... ILL ZUSAMMENFASSUNG..................................................................................... V TABLE OF CONTENTS ...................................................................................... VII 1 INTRODUCTION ............................................................................................... 1 2 DESIGN OF UG4 ........................................................................................... 5 2.1 GENERAL ....................................................................................................... 5 2.2 COUPLING OF DIFFERENT SYSTEMS OF EQUATIONS ................................................. 8 2.2.1 SYSTEMS OF PARTIAL DIFFERENTIAL EQUATIONS ..................................................... 8 2.2.2 DISCRETIZATION OF THE EQUATIONS .................................................................. 13 2.2.3 ELEMENT-LOCAL CONSIDERATIONS .................................................................... 14 2.2.4 COUPLING OF DISCRETIZATIONS ........................................................................ 17 2.3 SCRIPT INTERFACE ........................................................................................... 22 2.3.1 GENERAL INTRODUCTION .................................................................................. 22 2.3.2 THE DOMAIN AND GRID SPECIFICATION ............................................................ 23 2.3.3 THE FLOW MODULE (INTEGRATED D 3 F) ............................................................... 24 2.3.4 THE REACTION-TRANSPORT MODULE (INTEGRATED R 3 T) .......................................... 29 2.3.5 START VALUES, BOUNDARY CONDITIONS AND SUBSET DATA .................................. 29 2.3.6 SOLVER SETUP AND TIME CONTROL .................................................................... 31 2.4 GRAPHICAL USER INTERFACE ............................................................................. 34 2.4.1 INTRODUCTION .............................................................................................. 34 2.4.2 VRL-STUDIO ............................................................................................... 34 2.4.3 PROMESH ................................................................................................... 43 2.4.4 DATA OUTPUT AND VISUALISATION .................................................................... 53 2.5 SUMMARY .................................................................................................... 56 3 SOLVERS ..................................................................................................... 57 3.1 MULTICORE ARCHITECTURES AND GPU .............................................................. 57 3.1.1 MULTICORE CPUS ........................................................................................ 57 3.1.2 GPUS ......................................................................................................... 57 3.1.3 BENEFITS OF MULTICORE CPUS AND GPUS ...................................................... 58 3.2 IMPROVING THE PERFORMANCE IN D 3 F++ USING ACCELERATORS ............................. 60 3.2.1 STRATEGY 1: GENERAL PURPOSE ACCELERATION FOR UNSTRUCTURED GRIDS ............ 60 3.2.2 STRATEGY 2: OPTIMIZED IMPLEMENTATION FOR STRUCTURED GRIDS ...................... 61 3.3 MULTIGRID SOLVERS ........................................................................................ 64 3.4 SOLVERS FOR NONLINEAR TRANSIENT PROBLEMS ................................................... 68 3.4.1 PRELIMINARIES ............................................................................................. 68 3.4.2 NONLINEAR SOLVERS I: CLASSIC NEWTON-TYPE SCHEMES .................................. 69 3.4.3 NONLINEAR SOLVERS II: LINEAR IMPLICIT SCHEMES ........................................... 72 3.4.4 NUMERICAL EXPERIMENTS ............................................................................. 74 3.4.5 CONCLUSION ................................................................................................ 78 3.5 HIGHER DIMENSIONAL PROBLEMS ................................................................... 79 3.5.1 INTRODUCTION: TRANSPORT EQUATIONS FOR PROBABILITY DENSITY ........................... 79 3.5.2 SPARSE GRIDS FOR DISCRETIZATION OF HIGH-DIMENSIONAL PDES......................... 80 3.5.3 NUMERICAL TESTS ......................................................................................... 83 4 MODELLING UNCERTAINTY IN SALT TRANSPORT ................................................. 87 4.1 MOTIVATION .................................................................................................. 87 4.2 METHODS .................................................................................................... 90 4.2.1 PDF TRANSPORT EQUATIONS ........................................................................... 90 4.2.2 MEAN AND VARIANCE TRANSPORT EQUATIONS .................................................. 91 4.2.3 ANALYTICAL SOLUTIONS OF THE FIRST MOMENT ................................................... 94 4.2.4 ANALYTICAL SOLUTION OF THE SECOND MOMENT ................................................ 94 4.3 A TIME DEPENDENT EXTENSION OF THE IEM MODEL ....................................... 97 4.4 SIMULATIONS ................................................................................................ 99 4.4.1 SIMULATION SETUP ........................................................................................ 99 4.4.2 CONCENTRATION VARIANCE ........................................................................... 100 4.4.3 PDF MODELLING ......................................................................................... 101 4.5 CONCLUSIONS ............................................................................................. 106 5 5 CODE VERIFICATION AND APPLICATIONS ...................................................... 107 VIII 5.1 VISCOSITY-DEPENDENT FLOW ........................................................................ 107 5.1.1 MODEL DESCRIPTION .................................................................................... 107 5.1.2 RESULTS .................................................................................................... 110 5.2 A 3D FRACTURE FLOW AND TRANSPORT MODEL ................................................... 114 5.2.1 BACKGROUND ............................................................................................. 114 5.2.2 CONCEPTUAL MODEL ................................................................................... 115 5.2.3 FRACTURES ................................................................................................. 117 5.2.4 HYDRAULIC PROPERTIES ................................................................................ 120 5.2.5 HYDRAULIC BOUNDARY CONDITIONS ................................................................ 121 5.2.6 TRACER TEST ............................................................................................... 122 5.2.7 RESULTS .................................................................................................... 124 5.2.8 CONCLUSIONS ............................................................................................. 142 5.3 3D REGIONAL FREE SURFACE FLOW .................................................................... 144 5.3.1 FREE GROUNDWATER TABLE IN DF++ ............................................................... 144 5.3.2 THE SANDELERMBNS MODEL ....................................................................... 146 5.3.3 SANDELERMONS SIMULATIONS ...................................................................... 150 5.3.4 CONCLUSIONS ............................................................................................. 153 6 SUMMARY ................................................................................................ 155 7 REFERENCES ............................................................................................. 157 TABLE OF FIGURES....................................................................................... 169 LIST OF TABLES ........................................................................................... 175 A NOTATION.................................................................................................... 177 B VISCOSITY DEPENDENT FLOW ......................................................................... 179 C DATA FOR THE TASK 6 MODEL ........................................................................ 183 IX
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classification_tum	NUC 801f
ctrlnum	(OCoLC)964501697 (DE-599)DNB1113596899
discipline	Energietechnik
format	Book
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physical	IX, 187 Seiten Illustrationen, Diagramme
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publisher	GRS
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series	Gesellschaft für Anlagen- und Reaktorsicherheit: GRS
series2	Gesellschaft für Anlagen- und Reaktorsicherheit: GRS
spellingShingle	Modelling of data uncertainties on hybrid computers Gesellschaft für Anlagen- und Reaktorsicherheit: GRS
subject_GND	(DE-588)4155043-2
title	Modelling of data uncertainties on hybrid computers
title_auth	Modelling of data uncertainties on hybrid computers
title_exact_search	Modelling of data uncertainties on hybrid computers
title_full	Modelling of data uncertainties on hybrid computers Anke Schneider (ed.)
title_fullStr	Modelling of data uncertainties on hybrid computers Anke Schneider (ed.)
title_full_unstemmed	Modelling of data uncertainties on hybrid computers Anke Schneider (ed.)
title_short	Modelling of data uncertainties on hybrid computers
title_sort	modelling of data uncertainties on hybrid computers
topic_facet	Forschungsbericht
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