Experimental and numerical studies on solute transport in unsaturated heterogeneous porous media under evaporation conditions:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Jülich
Forschungszentrum Jülich
2012
|
| Schriftenreihe: | Schriften des Forschungszentrums Jülich
Reihe Energie & Umwelt ; 143 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | Zsfassung in dt. und engl. Sprache |
| Beschreibung: | XVIII, 131 S. Ill., graph. Darst. |
| ISBN: | 9783893367955 |
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| 245 | 1 | 0 | |a Experimental and numerical studies on solute transport in unsaturated heterogeneous porous media under evaporation conditions |c Michel Bechtold |
| 264 | 1 | |a Jülich |b Forschungszentrum Jülich |c 2012 | |
| 300 | |a XVIII, 131 S. |b Ill., graph. Darst. | ||
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| 490 | 1 | |a Schriften des Forschungszentrums Jülich : Reihe Energie & Umwelt |v 143 | |
| 500 | |a Zsfassung in dt. und engl. Sprache | ||
| 502 | |a Zugl.: Bonn, Univ., Diss., 2012 | ||
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Datensatz im Suchindex
| _version_ | 1804150469226921984 |
|---|---|
| adam_text | IMAGE 1
C O N T E N T S
ACKNOWLEDGEMENTS I
L I S T O F FIGURES X I
L I S T O F T A B L E S X I I I
L I S T O F S Y M B O L S A N D A B B R E V I A T I O N S X V
A B S T R A C T 1
Z U S A M M E N F A S S U N G ( A B S T R A C T IN G E R M A N ) 3
1 I N T R O D U C T I O N 5
1.1 LABORATORY SOILS AS A N INTERMEDIATE STEP 8
1.2 THESIS OUTLINE 9
2 EFFICIENT R A N D O M W A L K P A R T I C L E T R A C K I N G A L G O
R I T H M 1 1
2.1 INTRODUCTION 12
2.2 THEORY 14
2.2.1 REFLECTION BARRIER A N D INTERPOLATION M E T H O D 14
2.2.2 IMPROVEMENTS TO T H E REFLECTION BARRIER M E T H O D 19
2.2.2.1 CORRECT TIME SPLITTING FOR DISPERSION 19
2.2.2.2 ONE-SIDED REFLECTION COEFFICIENT 20
2.2.2.3 TRANSFORMATION OF T H E DISPERSIVE DISPLACEMENT . . . 22
2.3 MATERIALS A N D METHODS 25
2.3.1 NUMERICAL IMPLEMENTATION OF REFLECTION BARRIER M E T H O D . . . .
25
2.3.2 NUMERICAL VERIFICATION OF IMPROVED REFLECTION BARRIER M E T H O D
. 26 2.4 TEST SCENARIOS 28
2.4.1 TEST SCENARIO SI 28
2.4.1.1 PROBLEM DESCRIPTION 28
2.4.1.2 RESULTS A N D DISCUSSION 29
2.4.2 TEST SCENARIO S2-1 A N D S2-2 31
2.4.2.1 PROBLEM DESCRIPTION 31
2.4.2.2 RESULTS A N D DISCUSSION 35
2.5 DISCUSSION 41
2.5.1 CONVERGENCE T O T H E T R U E SOLUTION 41
2.5.2 EFFICIENCY CONSIDERATIONS 43
2.5.3 PRACTICAL APPLICATION ASPECTS OF THE IMPROVED REFLECTION BARRIER M
E T H O D 45
2.6 CONCLUSIONS 46
I I I
HTTP://D-NB.INFO/1024981673
IMAGE 2
3 N E A R - S U R F A C E S O L U T E R E D I S T R I B U T I O N D U R
I N G E V A P O R A T I O N 4 9
3.1 INTRODUCTION 50
3.2 MATERIAL A N D METHODS 51
3.2.1 LABORATORY EXPERIMENTS 51
3.2.2 FLOW A N D T R A N S P O R T MODELING 52
3.3 RESULTS A N D DISCUSSION 53
3.3.1 NEAR-SURFACE REDISTRIBUTION OF TRACERS 53
3.3.2 REDISTRIBUTION OF TRACERS DEEPER IN T H E SAMPLE 56
3.4 CONCLUSIONS 59
4 U P W A R D T R A N S P O R T IN A 3 - D H E T E R O G E N E O U S L A
B O R A T O R Y S O I L
U N D E R E V A P O R A T I O N C O N D I T I O N S 6 1
4.1 INTRODUCTION 62
4.2 MATERIAL A N D METHODS 64
4.2.1 SANDBOX A N D B O U N D A R Y CONDITIONS 64
4.2.2 POROUS M E D I U M 67
4.2.3 TRACER EXPERIMENT UNDER EVAPORATION CONDITIONS 67
4.2.4 POINT SENSORS 69
4.2.5 TIME-LAPSE ELECTRICAL RESISTIVITY TOMOGRAPHY 70
4.2.5.1 D A T A ACQUISITION 70
4.2.5.2 INVERSE PROBLEM 71
4.2.5.3 ESTIMATING T H E D A T A ERROR WEIGHTING M A T R I X W J . . 72
4.2.5.4 FROM BULK T O WATER ELECTRICAL CONDUCTIVITY 73
4.2.5.5 USING STRUCTURAL CONSTRAINTS IN T H E SMOOTHNESS CONSTRAINT O P
E R A T O R W S 74
4.2.5.6 OBTAINING LOCAL EVAPORATION RATES FROM ELECTRICAL RESISTIVITY
TOMOGRAPHY 75
4.2.6 NUMERICAL SIMULATION OF FLOW A N D T R A N S P O R T 75
4.2.6.1 NUMERICAL MODEL 75
4.2.6.2 EVAPORATION B O U N D A R Y CONDITION 76
4.2.7 GENERATION A N D INVERSION OF SYNTHETIC ELECTRICAL RESISTIVITY
TOMOGRAPHY D A T A 77
4.2.8 SOLUTE T R A N S P O R T ANALYSIS 78
4.2.8.1 COMPARISON OF MONITORED A N D MODELED SOLUTE T R A N S P O R T
78
4.2.8.2 LEACHING SURFACES 78
4.3 RESULTS A N D DISCUSSION 79
4.3.1 PETROPHYSICAL PARAMETERS A N D EFFECT OF STRUCTURAL CONSTRAINTS 79
4.3.2 TOTAL A N D MATERIAL-SPECIFIC EVAPORATION RATES 81
4.3.3 EVAPORATION P A T T E R N DERIVED FROM ELECTRICAL RESISTIVITY
TOMOGRAPHY 83
4.3.4 COMPARISON OF MONITORED A N D MODELED SOLUTE T R A N S P O R T . .
. 85
4.3.5 REASONS FOR DEVIATIONS BETWEEN MONITORED A N D MODELED SOLUTE T R
A N S P O R T 85
4.3.6 PREFERENTIAL PATHWAYS OF UPWARD SOLUTE T R A N S P O R T 91
4.4 CONCLUSIONS 91
5 S Y N T H E S I S 9 5
5.1 SUMMARIZING CONCLUSIONS 95
5.2 PERSPECTIVES 97
5.2.1 R A N D O M WALK PARTICLE TRACKING IN VADOSE ZONE STUDIES . . . .
97
5.2.2 T H E EFFECT OF UPWARD FLOW PERIODS O N T H E LEACHING OF SOLUTES
. 97
*5.2.3 FROM LABORATORY SOILS T O N A T U R A L SOILS 98
I V
IMAGE 3
*5.2.4 EFFECTIVE P A R A M E T E R MODELS T H A T ACCOUNT FOR
REDISTRIBUTION
PROCESSES DURING UPWARD FLOW 98
R E F E R E N C E S 9 9
A R E F E R E N C E R O O T M E A N S Q U A R E E R R O R 1 1 1
B P H O T O G R A P H I C D O C U M E N T A T I O N O F T H E C O N S T
R U C T I O N O F T H E
L A B O R A T O R Y S O I L 1 1 3
C A C C U R A T E D E T E R M I N A T I O N O F T H E B U L K E L E C T
R I C A L C O N D U C T I V I T Y W I T H
T H E T D R 1 0 0 C A B L E T E S T E R 1 1 7
C . L INTRODUCTION 118
C.2 MATERIALS A N D METHODS 120
C.3 RESULTS A N D DISCUSSION 123
C.4 CONCLUSIONS 130
V
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| id | DE-604.BV041092784 |
| illustrated | Illustrated |
| indexdate | 2024-07-10T00:39:25Z |
| institution | BVB |
| isbn | 9783893367955 |
| language | English |
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| physical | XVIII, 131 S. Ill., graph. Darst. |
| publishDate | 2012 |
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| series2 | Schriften des Forschungszentrums Jülich : Reihe Energie & Umwelt |
| spelling | Bechtold, Michel 1980- Verfasser (DE-588)101904019X aut Experimental and numerical studies on solute transport in unsaturated heterogeneous porous media under evaporation conditions Michel Bechtold Jülich Forschungszentrum Jülich 2012 XVIII, 131 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Schriften des Forschungszentrums Jülich : Reihe Energie & Umwelt 143 Zsfassung in dt. und engl. Sprache Zugl.: Bonn, Univ., Diss., 2012 Stoffübertragung (DE-588)4057696-6 gnd rswk-swf Poröser Stoff (DE-588)4046811-2 gnd rswk-swf Grundwasser (DE-588)4022369-3 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Grundwasser (DE-588)4022369-3 s Poröser Stoff (DE-588)4046811-2 s Stoffübertragung (DE-588)4057696-6 s DE-604 Schriften des Forschungszentrums Jülich Reihe Energie & Umwelt ; 143 (DE-604)BV023393979 143 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=026069349&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Bechtold, Michel 1980- Experimental and numerical studies on solute transport in unsaturated heterogeneous porous media under evaporation conditions Schriften des Forschungszentrums Jülich Stoffübertragung (DE-588)4057696-6 gnd Poröser Stoff (DE-588)4046811-2 gnd Grundwasser (DE-588)4022369-3 gnd |
| subject_GND | (DE-588)4057696-6 (DE-588)4046811-2 (DE-588)4022369-3 (DE-588)4113937-9 |
| title | Experimental and numerical studies on solute transport in unsaturated heterogeneous porous media under evaporation conditions |
| title_auth | Experimental and numerical studies on solute transport in unsaturated heterogeneous porous media under evaporation conditions |
| title_exact_search | Experimental and numerical studies on solute transport in unsaturated heterogeneous porous media under evaporation conditions |
| title_full | Experimental and numerical studies on solute transport in unsaturated heterogeneous porous media under evaporation conditions Michel Bechtold |
| title_fullStr | Experimental and numerical studies on solute transport in unsaturated heterogeneous porous media under evaporation conditions Michel Bechtold |
| title_full_unstemmed | Experimental and numerical studies on solute transport in unsaturated heterogeneous porous media under evaporation conditions Michel Bechtold |
| title_short | Experimental and numerical studies on solute transport in unsaturated heterogeneous porous media under evaporation conditions |
| title_sort | experimental and numerical studies on solute transport in unsaturated heterogeneous porous media under evaporation conditions |
| topic | Stoffübertragung (DE-588)4057696-6 gnd Poröser Stoff (DE-588)4046811-2 gnd Grundwasser (DE-588)4022369-3 gnd |
| topic_facet | Stoffübertragung Poröser Stoff Grundwasser Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=026069349&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV023393979 |
| work_keys_str_mv | AT bechtoldmichel experimentalandnumericalstudiesonsolutetransportinunsaturatedheterogeneousporousmediaunderevaporationconditions |