Capillary transport of cryogenic liquids in porous structures:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Göttingen
Cuvillier
2013
|
| Ausgabe: | 1. Aufl. |
| Schlagworte: | |
| Online-Zugang: | Inhaltstext Inhaltsverzeichnis |
| Beschreibung: | XVI, 210 S. Ill., graph. Darst. |
| ISBN: | 9783954044436 |
Internformat
MARC
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| 245 | 1 | 0 | |a Capillary transport of cryogenic liquids in porous structures |c von Ming Zhang |
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| 502 | |a Zugl.: Bremen, Univ., Diss., 2013 | ||
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Datensatz im Suchindex
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CONTENTS
1 INTRODUCTION 1
1.1 MOTIVATION AND BACKGROUND 3
1.2 CONTENTS OF THIS WORK 7
1.3 CONNECTION TO PORENET 8
2 STATE OF THE ART 9
2.1 CAPILLARY RISE AND WICKING 9
2.1.1 CAPILLARY RISE 12
2.1.2 WICKING 15
2.2 POROUS MEDIA 17
2.2.1 POROSITY 17
2.2.2 SPECIFIC SURFACE AREA AND HYDRAULIC DIAMETER AND RADIUS 18
2.2.3 TORTUOSITY 19
2.2.4 STATIC PORE RADIUS 20
2.2.5 SUCTION PRESSURE 21
2.2.6 REPRESENTATIVE ELEMENTARY VOLUME 23
2.2.7 PERMEABILITY 24
2.3 PRESSURE LOSS OF
FLOW
IN POROUS MEDIA 25
2.3.1 FLOW IN DUCTS 26
2.3.2 CAPILLARY MODEL 28
2.3.3 HYDRAULIC RADIUS MODEL 29
2.3.4 DRAG MODELS 31
2.3.5 ERGUN EQUATION 34
2.4 SIMULATIONS WITH FLOW 3D 35
2.5 SIMULATIONS ON PORE LEVEL WITH SURFACE GEOMETRY OBTAINED FROM
TOMOGRAPHY 37
VII
HTTP://D-NB.INFO/1036558118
3 TRANSPORT EQUATIONS OF WICKING PROCESSES 39
3.1 ISOTHERMAL WICKING WITHOUT LIQUID VAPORIZATION 42
3.2 ISOTHERMAL WICKING WITH LIQUID VAPORIZATION ON THE
SURFACE AREA OF THE WICK
ING REGION 45
3.3 NON-ISOTHERMAL WICKING: WICKING OF SATURATED LIQUID INTO A POROUS
MEDIUM
OF HIGH INITIAL TEMPERATURE 48
3.4 TRANSPORT EQUATIONS FOR WICKING IN SAMPLES OF CIRCULAR CROSS SECTION
.
56
3.5 DIMENSIONLESS FORMULATION OF THE OBTAINED EQUATIONS 57
3.5.1 ISOTHERMAL WICKING WITHOUT LIQUID VAPORIZATION 58
3.5.2 ISOTHERMAL WICKING WITH LIQUID VAPORIZATION ON THE SURFACE AREA OF
THE WICKING REGION 58
3.5.3 NON-ISOTHERMAL WICKING: WICKING OF SATURATED LIQUID INTO A POROUS
MEDIUM OF HIGH INITIAL TEMPERATURE 59
4 EXPERIMENTAL INVESTIGATION AND COMPARISON WITH THEORY 61
4.1 EXPERIMENTAL SETUP 61
4.2 PHYSICAL PROPERTIES OF EMPLOYED POROUS MEDIA AND EXPERIMENT LIQUIDS
.
65
4.2.1 POROUS MEDIA 65
4.2.2 EXPERIMENT LIQUIDS 72
4.3 DETERMINATION OF STRUCTURED PARAMETERS OF GLASS FRITS 73
4.3.1 POROSITY 73
4.3.2 STATIC RADIUS 76
4.3.3 PERMEABILITY 80
4.4 ISOTHERMAL WICKING AT ROOM TEMPERATURE 83
4.5 WICKING WITH LIQUID NITROGEN 94
4.5.1 QUASI-ISOTHERMAL WICKING EXPERIMENTS WITH LN2 IN A DEEP DEWAR . .
95
4.5.2 LN2 WICKING IN A FLAT DEWAR 100
4.5.3 LN2 WICKING IN A DEEP DEWAR WITH GLASS FRITS OF HIGH INITIAL
TEMPERATURE
103
4.5.4 REPRODUCIBILITY OF WICKING EXPERIMENTS WITH LN2 106
4.6 DIMENSIONAL ANALYSIS 106
4.7 ANALYTICAL SOLUTIONS 109
4.8 CONCLUSIONS 112
VIII
5 ACQUISITION OF SURFACE GEOMETRY 115
5.1 CONSTRUCTION OF SURFACE GEOMETRY WITH CAD SOFTWARE 115
5.2 TOMOGRAPHY 117
6 MICROSCOPIC SIMULATIONS ON PORE LEVEL FOR THE
DETERMINATION OF STRUCTURAL
PARAMETERS 121
6.1 BENCHMARK SIMULATIONS 122
6.1.1 CAPILLARY RISE AND FALL 122
6.1.2 PRESSURE LOSS IN DUCTS 128
6.1.3 PRESSURE LOSS IN ORDERED SPHERE PACKINGS 131
6.2 SIMULATIONS WITH A REAL POROUS MEDIUM 136
6.2.1 CALCULATION OF PERMEABILITY USING PRESSURE DROP 136
6.2.2 CALCULATION OF STATIC RADIUS USING SIMULATIONS 138
6.3 CONCLUSIONS 143
7 SIMULATIONS OF WICKING PROCESSES ON MACROSCOPIC LEVEL 145
7.1 ISOTHERMAL WICKING 145
7.2 NON-ISOTHERMAL WICKING 150
8 SUMMARY 151
8.1 THEORETICAL MODELING 152
8.2 EXPERIMENTAL INVESTIGATION . . . * 152
8.3 NUMERICAL SIMULATIONS - 154
8.3.1 ACQUISITION OF SURFACE GEOMETRY 154
8.3.2 MICROSCOPIC SIMULATIONS 154
8.3.3 MACROSCOPIC SIMULATIONS 155
APPENDIX 156
A NON-ISOTHERMAL WICKING: GASEOUS ENVIRONMENT HAS NO TEMPERATURE
GRA
DIENT 157
B TRANSPORT EQUATIONS FOR WICKING IN SAMPLES OF CIRCULAR CROSS SECTION
163
B.L ISOTHERMAL WICKING WITH EVAPORATION 164
IX
B.2 NON-ISOTHERMAL WICKING: WICKING OF SATURATED LIQUID INTO POROUS
MEDIA OF
HIGH INITIAL TEMPERATURE 167
B.2.1 NON-ISOTHERMAL WICKING: WICKING OF SATURATED LIQUID INTO A WARM
SOLID STRUCTURE (GASEOUS ENVIRONMENT HAS NO TEMPERATURE GRADIENT) . 171
C DIMENSIONLESS FORMULATIONS OF THE
OBTAINED WICKING
TRANSPORT EQUATIONS
175
C.L GASEOUS ENVIRONMENT HAS A LINEAR TEMPERATURE GRADIENT 175
C.2 GASEOUS ENVIRONMENT HAS NO TEMPERATURE GRADIENT 183
C.3 ISOTHERMAL WICKING WITH EVAPORATION 186
D CALCULATION OF STRUCTURAL PARAMETERS BASED ON DATA SHEETS FROM
SUPPLIER
(ROBU) 187
D.L PRESSURE DROP MEASUREMENTS WITH WATER 189
D.2 PRESSURE DROP MEASUREMENTS WITH AIR 190
E SUMMARY OF DIMENSIONLESS NUMBERS FOR PERFORMED VERTICAL WICKING EX
PERIMENTS 191
F FLOW 3D SETTINGS 195
F.L PRESSURE LOSS IN GLASS FRITS 195
F.2 1 G SIMULATION FOR CALCULATION OF STATIC RADIUS 196
F.3 0 G SIMULATION FOR CALCULATION OF STATIC RADIUS 197
F.4 ISOTHERMAL MACROSCOPIC SIMULATIONS 198
BIBLIOGRAPHY 199
X |
| any_adam_object | 1 |
| author | Zhang, Ming |
| author_facet | Zhang, Ming |
| author_role | aut |
| author_sort | Zhang, Ming |
| author_variant | m z mz |
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| classification_rvk | UG 2300 |
| ctrlnum | (OCoLC)864502750 (DE-599)DNB1036558118 |
| dewey-full | 620 629.134351 |
| dewey-hundreds | 600 - Technology (Applied sciences) |
| dewey-ones | 620 - Engineering and allied operations 629 - Other branches of engineering |
| dewey-raw | 620 629.134351 |
| dewey-search | 620 629.134351 |
| dewey-sort | 3620 |
| dewey-tens | 620 - Engineering and allied operations |
| discipline | Physik Verkehr / Transport |
| edition | 1. Aufl. |
| format | Thesis Book |
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| spelling | Zhang, Ming Verfasser aut Capillary transport of cryogenic liquids in porous structures von Ming Zhang 1. Aufl. Göttingen Cuvillier 2013 XVI, 210 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Zugl.: Bremen, Univ., Diss., 2013 Poröser Stoff (DE-588)4046811-2 gnd rswk-swf Kryogener Raketentreibstoff (DE-588)4476115-6 gnd rswk-swf Transportprozess (DE-588)4185932-7 gnd rswk-swf Kapillarität (DE-588)4029556-4 gnd rswk-swf Numerische Strömungssimulation (DE-588)4690080-9 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Kryogener Raketentreibstoff (DE-588)4476115-6 s Poröser Stoff (DE-588)4046811-2 s Transportprozess (DE-588)4185932-7 s Kapillarität (DE-588)4029556-4 s Numerische Strömungssimulation (DE-588)4690080-9 s DE-604 X:MVB text/html http://deposit.dnb.de/cgi-bin/dokserv?id=4373719&prov=M&dok%5Fvar=1&dok%5Fext=htm Inhaltstext DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=026907966&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Zhang, Ming Capillary transport of cryogenic liquids in porous structures Poröser Stoff (DE-588)4046811-2 gnd Kryogener Raketentreibstoff (DE-588)4476115-6 gnd Transportprozess (DE-588)4185932-7 gnd Kapillarität (DE-588)4029556-4 gnd Numerische Strömungssimulation (DE-588)4690080-9 gnd |
| subject_GND | (DE-588)4046811-2 (DE-588)4476115-6 (DE-588)4185932-7 (DE-588)4029556-4 (DE-588)4690080-9 (DE-588)4113937-9 |
| title | Capillary transport of cryogenic liquids in porous structures |
| title_auth | Capillary transport of cryogenic liquids in porous structures |
| title_exact_search | Capillary transport of cryogenic liquids in porous structures |
| title_full | Capillary transport of cryogenic liquids in porous structures von Ming Zhang |
| title_fullStr | Capillary transport of cryogenic liquids in porous structures von Ming Zhang |
| title_full_unstemmed | Capillary transport of cryogenic liquids in porous structures von Ming Zhang |
| title_short | Capillary transport of cryogenic liquids in porous structures |
| title_sort | capillary transport of cryogenic liquids in porous structures |
| topic | Poröser Stoff (DE-588)4046811-2 gnd Kryogener Raketentreibstoff (DE-588)4476115-6 gnd Transportprozess (DE-588)4185932-7 gnd Kapillarität (DE-588)4029556-4 gnd Numerische Strömungssimulation (DE-588)4690080-9 gnd |
| topic_facet | Poröser Stoff Kryogener Raketentreibstoff Transportprozess Kapillarität Numerische Strömungssimulation Hochschulschrift |
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