CFD-PBM investigation on gas liquid fluid dynamic and mass transfer in stirred tank reactors:
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| Main Author: | |
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| Format: | Thesis Book |
| Language: | English |
| Published: |
2015
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| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | XVI, 135 S. Ill., graph. Darst. |
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| 100 | 1 | |a Zhang, Shuo |e Verfasser |0 (DE-588)1064952100 |4 aut | |
| 245 | 1 | 0 | |a CFD-PBM investigation on gas liquid fluid dynamic and mass transfer in stirred tank reactors |c vorgelegt von Shuo Zhang |
| 246 | 1 | |a CFD-PBM investigation on gas-liquid fluid dynamic and mass transfer in stirred tank reactors | |
| 264 | 1 | |c 2015 | |
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Record in the Search Index
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| adam_text | CONTENTS
1 INTRODUCTION 1
1.1 MOTIVATION 4
1.2 RESEARCH OBJ ECTIVES 6
1.2.1 FLUID MACRO-INSTABILITY (MI) IN BAFFLED STR 7
1.2.2 BUBBLE BEHAVIOR IN PBM BASED CFD SIMULATION 8
1.3 SCOPE AND STRUCTURE OF THE DISSERTATION 10
2 THE MULTIPHASE, AGITATION AND TURBULENT MODELS IN CFD 13
2.1 PHYSICAL PROPERTIES OF THE FLUIDS 13
2.1.1 VISCOSITY MEASUREMENT 14
2.1.2 SURFACE TENSION MEASUREMENT 15
2.2 MULTIPHASE MODELING 19
2.2.1 FRONT-TRACKING DNS APPROACH 20
2.2.2 EULER-LAGRANGE APPROACH 22
2.2.3 EULER-EULER APPROACH 23
2.2.3.1 VOLUME OF FLUID (VOF) MODEL 24
2.2.3.2 EULERIAN MODEL 25
2.2.4 INTERFACIAL FORCES 26
2.2.4.1 CONTINUUM SURFACE FORCE 27
2.2.4.2 DRAG FORCE 27
2.2.4.3 VIRTUAL MASS FORCE 28
2.2.4.4 TRANSVERSAL LIFT FORCE 30
2.3 TURBULENCE MODELING 30
2.3.1 REYNOLDS-AVERAGE NAVIER STOKES 31
2.3.1.1 STANDARD K-S MODEL 32
2.3.1.2 RENORMALIZATION GROUP (RNG) K-S MODEL 35
VI
HTTP://D-NB.INFO/1076184057
2.3.2 LARGE EDDY SIMULATION 36
2.4 ROTATION MODELING 38
2.4.1 MOVING REFERENCE FRAME 39
2.4.2 SLIDING MESHING 41
3 POPULATION BALANCE MODELS AND MASS TRANSFER MODELS IN CFD 44
3.1 POPULATION BALANCE EQUATION 45
3.2 BUBBLE BREAKAGE PROCESS 46
3.2.1 NUMBER OF BUBBL E DAUGHTERS 47
3.2.2 BUBBLE DAUGHTER SIZE PROBABILITY DENSITY FUNCTION (PDF) 48
3.2.3 BREAKAGE RATE 49
3.3 BUBBLE COALESCENCE PROCESS 52
3.3.1 COLLISION FREQUENCY 53
3.3.2 COALESCENCE EFFICIENCY 54
3.4 THE SOLUTION METHODS 56
3.4.1 THE CLASSES METHOD 58
3.4.2 QUADRATURE METHOD OF MOMENTS 59
3.5 THE VOLUMETRIC MASS TRANSFER COEFFICIENT (K
L
A) 60
4 THE SMD IN INTERNAL AIR-LIFTED BUBBLE COLUMN 64
4.1 CFD SIMULATION 66
4.2 MEASUREMENT IN AIR-LIFTED INNER-LOOP BUBBLE COLUMN 68
4.2.1 OVERALL GAS HOLDUP S 70
4.2.2 LIQUID VELOCITY IN THE DOWNCOMER 70
4.2.3 K
L
A
MEASUREMENT 72
4.3 RESULTS AND DISCUSSION 73
4.3.1 OVERALL GAS HOLDUP 74
4.3.2 LIQUID VELOCITY 77
4.3.3 SAUTER MEAN DIAMETER (SMD) AND K
L
A 79
VII
5 THE FLUID MACRO INSTABILITY IN BAFFLED STR 83
5.1 CFD SIMULATION 84
5.2 LASER DOPPLER ANEMOMETRY MEASUREMENT 87
5.3 RESULTS AND DISCUSSION 89
5.3.1 THE MI FREQUENCY IN FAST FOURIER TRANSFER (FFT) SPECTRUM 89
5.3.2 THE DIMENSIONLESS MI FREQUENCY 92
5.3.3 THE LOW AND HIGH MI FREQUENCIES 93
6 PBM-CFD SIMULATIONS IN INPROMPT STR 97
6.1 THE GAS FLOW RATE INDIRECT MEASUREMENT IN INPROMPT STR 99
6.1.1 THE LIQUID COLUMN HEIGHT IN THE INNER TUBE 100
6.1.2 THE ARTIFICIAL GAS FLOW RATE ESTIMATION 101
6.2 MI AND ITS INFLUENCE TO SMD IN INPROMPT STR 105
6.2.1 THE EFFECT OF BAFFLES ON MI AND INTERFACIAL VORTEX 105
6.2.2 THE INFLUENCE OF MI TO SMD 107
7 CONCLUSIONS AND OUTLOOK 112
7.1 CONCLUSION 112
7.2 OUTLOOK 114
8 APPENDIX 116
9 REFERENCES 126
VIE
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| genre_facet | Hochschulschrift |
| id | DE-604.BV042269518 |
| illustrated | Illustrated |
| indexdate | 2024-07-10T01:16:54Z |
| institution | BVB |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-027707105 |
| oclc_num | 915552145 |
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| owner_facet | DE-83 DE-91 DE-BY-TUM |
| physical | XVI, 135 S. Ill., graph. Darst. |
| publishDate | 2015 |
| publishDateSearch | 2015 |
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| spelling | Zhang, Shuo Verfasser (DE-588)1064952100 aut CFD-PBM investigation on gas liquid fluid dynamic and mass transfer in stirred tank reactors vorgelegt von Shuo Zhang CFD-PBM investigation on gas-liquid fluid dynamic and mass transfer in stirred tank reactors 2015 XVI, 135 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Berlin, Techn. Univ., Diss., 2014 (DE-588)4113937-9 Hochschulschrift gnd-content DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027707105&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Zhang, Shuo CFD-PBM investigation on gas liquid fluid dynamic and mass transfer in stirred tank reactors |
| subject_GND | (DE-588)4113937-9 |
| title | CFD-PBM investigation on gas liquid fluid dynamic and mass transfer in stirred tank reactors |
| title_alt | CFD-PBM investigation on gas-liquid fluid dynamic and mass transfer in stirred tank reactors |
| title_auth | CFD-PBM investigation on gas liquid fluid dynamic and mass transfer in stirred tank reactors |
| title_exact_search | CFD-PBM investigation on gas liquid fluid dynamic and mass transfer in stirred tank reactors |
| title_full | CFD-PBM investigation on gas liquid fluid dynamic and mass transfer in stirred tank reactors vorgelegt von Shuo Zhang |
| title_fullStr | CFD-PBM investigation on gas liquid fluid dynamic and mass transfer in stirred tank reactors vorgelegt von Shuo Zhang |
| title_full_unstemmed | CFD-PBM investigation on gas liquid fluid dynamic and mass transfer in stirred tank reactors vorgelegt von Shuo Zhang |
| title_short | CFD-PBM investigation on gas liquid fluid dynamic and mass transfer in stirred tank reactors |
| title_sort | cfd pbm investigation on gas liquid fluid dynamic and mass transfer in stirred tank reactors |
| topic_facet | Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027707105&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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