Complex microfluidics:
Gespeichert in:
1. Verfasser: | |
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Format: | Abschlussarbeit Buch |
Sprache: | English |
Veröffentlicht: |
2013
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Schlagworte: | |
Online-Zugang: | Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20130109-1120771-0-9 Inhaltsverzeichnis |
Beschreibung: | VIII, 199 S. Ill., graph. Darst. |
Internformat
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Datensatz im Suchindex
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adam_text | IMAGE 1
CONTENTS
1 I N T R O D U C T I O N 1
2 MATERIALS A N D M E T H O D S 3
2.1 * MICROFLUIDIC CHANNELS AND MEASUREMENT SETUP 3
2.2 MATERIALS 4
2.3 DETERMINATION OF POLYMER DYNAMICS A N D VELOCITY FIELDS C
2.4 LOCAL PRESSURE SENSING WITH CHANNEL WALL DEFLECTION 7
2.5 DETERMINATION OF FLOWRATE RATIO IN DIFFERENTIAL VISCOMETER 8
3 B A S I C F L U I D D Y N A M I C S I N MICROFLUIDIC C H A N N E L S
11
3.1 FLOW CLASSIFICATION 11
3.1.1 PLANAR FLOWS 12
3.1.2 SIMPLE SHEAR FLOW 12
3.1.3 EXTENSIONAL FLOW 13
3.2 CHANNEL FLOWS IN LOW REYNOLDS REGIME 14
3.2.1 NAVIER STOKES EQUATIONS 14
3.2.2 REYNOLDS NUMBER IN MICROFLUIDIC FLOWS 15
3.2.3 LAMINAR CHANNEL FLOW 15
3.2.4 NUMERICAL DETERMINATION OF SHAPE FACTORS F J A N D F* 16
3.3 VISCOSITY OF COMPLEX FLUIDS 18
3.3.1 STEADY STATE VISCOSITY 18
4 P O L Y M E R D Y N A M I C S I N SHEAR F L O W 2 1
4.1 EQUILIBRIUM PROPERTIES OF POLYMERS IN DILUTE SOLUTION 22
4.1.1 PERSISTENCE LENGTH L P A N D KUHN LENGTH BK 22
4.1.2 END-TO-END VECTOR LENGTH 2 3
4.1.3 DIFFUSION OF LINEAR POLYMERS 24
4.2 TUMBLING DYNAMICS OF SINGLE POLYMERS IN SHEAR FLOW: THEORETICAL
FRAMEWORK 27 4.2.1 DYNAMICS OF CENTER OF MASS 28
4.2.2 TUMBLING TIME T T 29
4.2.3 STIFF POLYMERS: BROWNIAN ROD DYNAMICS 30
4.2.4 SEMIFLEXIBLE POLYMERS: U-TURN TUMBLING 35
4.2.5 FLEXIBLE POLYMERS: GENERALIZED MODEL DESCRIPTION 40
HTTP://D-NB.INFO/103537935X
IMAGE 2
C O N T E N T S
4.3 TUMBLING DYNAMICS OF POLYMERS IN SHEAR FLOW: RESULTS & DISCUSSION .
. . 42 4.3.1 REGIME I: RODLIKE POLYMERS IN SHEAR FLOW 43
4.3.2 REGIME II: SEMIFLEXIBLE POLYMERS IN SHEAR FLOW 47
4.3.3 REGIME III: FLEXIBLE REGIME. L C L P 52
4.4 MICROSCOPIC ORIGIN OF NON-NEWTONIAN PROPERTIES 54
4.5 SURFACE EFFECTS: CROSS STREAM MIGRATION 60
4.5.1 LIFT FORCES: THEORY 61
4.5.2 EXPERIMENTAL RESULTS & DISCUSSION 61
5 DIFFERENTIAL MICROFLUIDIC V I S C O M E T E R 6 5
5.1 SHEAR AND EXTENSIONAL VISCOSITY OF POLYMER SOLUTIONS 66
5.2 CAPILLARY RHEOMETER 66
5.3 DIFFERENTIAL SHEAR RHEOMETER 68
5.3.1 EXISTING MICROFLUID DIFFERENTIAL RHEOMETERS 68
5.3.2 WORKING PRINCIPLE OF DIFFERENTIAL VISCOMETER 69
5.3.3 DESIGN OF EXPERIMENTAL MEASUREMENT GEOMETRIES 72
5.3.4 ENTRANCE A N D EXIT EFFECTS 75
5.3.5 MEASUREMENTS WITH SEMI-DILUTE POLYMER SOLUTION 76
5.3.6 MEASUREMENTS WITH WORM-LIKE MICELLAR SOLUTION 77
5.4 DIFFERENTIAL EXTENSIONAL RHEOMETER 81
5.4.1 DETERMINATION OF EXTENSIONAL VISCOSITY FROM ENTRANCE PRESSURE
DROPS 82 5.4.2 WORKING PRINCIPLE OF DIFFERENTIAL EXTENSIONAL RHEOMETER
84
5.4.3 DESIGN OF EXPERIMENTAL MEASUREMENT GEOMETRIES 85
5.4.4 D A T A EVALUATION METHODS 87
5.4.5 EXPERIMENTAL RESULTS & DISCUSSION 90
5.4.6 MIXED FLOW EFFECTS 99
5.4.7 CONCLUSION 104
6 FLUID-STRUCTURE INTERACTIONS: TRANSIENT F L O W I N VISCOELASTIC
MICROFLUIDIC CHANNELS 1 0 7
6.1 I D - MODELLING OF MICROFLUIDIC CHANNEL WITH VISCOELASTIC WALLS 108
6.1.1 HYDRODYNAMIC ANALOGY OF LAMINAR FLOWS T O ELECTRIC CIRCUITS . . .
108 6.1.2 EQUIVALENT CIRCUIT MODEL OF MICROFLUIDIC CHANNEL WITH
VISCOELASTIC WALLS 109
6.1.3 COMPLEX WALL RESISTANCE Z X(W) OF VISCOELASTIC MATERIAL I L L
6.2 RESULTS & DISCUSSION 112
6.2.1 DETERMINATION OF PRESSURE P(T) FROM CHANNEL DEFORMATIONS 113
6.2.2 DETERMINATION OF T H E FLOWRATE Q(T) . 115
6.2.3 CALCULATION OF THEORETICAL CURVES 115
6.2.4 DISCUSSION WITH PURELY ELASTIC CHANNEL MODEL 117
7 O U T L O O K 1 2 3
IMAGE 3
C O N T E N T S V I I
A B A S I C F L U I D D Y N A M I C S 1 2 7
A . L FLOW CLASSIFICATION 127
A.2 PLANAR FLOWS 132
A.3 LAMINAR FLOW IN CHANNELS WITH CONSTANT CROSS SECTION 138
B P O L Y M E R D Y N A M I C S 1 4 1
B . L ROTATIONAL DIFFUSION OF FLEXIBLE CHAINS (ROUSE MODEL) 141
B.2 ROTATIONAL DIFFUSION OF SEMIFLEXIBLE FILAMENT 147
B.3 ROTATIONAL DIFFUSION COEFFICIENT D R FOR STIFF, SEMIFLEXIBLE AND
FLEXIBLE POLY MERS 152
B.4 CALCULATION OF DIFFUSIVE TIME T&G 155
B.5 ORIENTATIONAL DISTRIBUTION FUNCTION OF BROWNIAN RODS IN SHEAR FLOW .
. . 157 B.6 FORCEBALANCE DESCRIPTION FOR TUMBLING DYNAMICS OF
SEMIFLEXIBLE FILAMENTS IN SHEAR FLOW 158
C DIFFERENTIAL V I S C O M E T E R 1 6 9
C . L RHEOLOGY OF (SEMI)-DILUTE POLYMER SOLUIONS 169
C.2 NUMERICAL EVALUATION OF DIFFERENTIAL SHEAR VISCOMETER D A T A 170
C.3 PRESSURE DROP IN HYPERBOLICAL CONSTRICTIONS 173
C.4 CALCULATION OF FLOWRATE RATIO X IN DIFFERENTIAL EXTENSIONAL
VISCOMETER . . 177 C.5 DETERMINATION OF EXTENSIONAL VISCOSITY FROM
FLOWRATE MEASUREMENTS X ( Q ) 179 C.6 SMOOTHING FUNCTION FOR FLOWRATE
MEASUREMENT D A T A X ( Q ) 179
C.7 NUMERICAL EVALUATION OF DIFFERENTIAL EXTENSIONAL VISCOMETER D A T A
180 C.8 FLOW CLASSIFICATION OF CYLINDRICAL SEMI-HYPERBOLIC CONSTRICTIONS
185
D FLUID-STRUCTURE-INTERACTIONS 1 8 7
D . L APPARENT PHASE VELOCITY V PH(UN) OF PRESSURE PROPAGATION 187
E LIST O F PUBLICATIONS 2 0 1
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spelling | Wunderlich, Bernhard Verfasser aut Complex microfluidics Bernhard K. Wunderlich 2013 VIII, 199 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Techn. Univ., Diss., 2013 Kanalströmung (DE-588)4137410-1 gnd rswk-swf Komplexe Flüssigkeit (DE-588)4311495-7 gnd rswk-swf Mikrofluidik (DE-588)4803438-1 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Komplexe Flüssigkeit (DE-588)4311495-7 s Mikrofluidik (DE-588)4803438-1 s Kanalströmung (DE-588)4137410-1 s DE-604 Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:91-diss-20130109-1120771-0-9 http://mediatum.ub.tum.de/node?id=1120771 Verlag kostenfrei Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20130109-1120771-0-9 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025910948&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
spellingShingle | Wunderlich, Bernhard Complex microfluidics Kanalströmung (DE-588)4137410-1 gnd Komplexe Flüssigkeit (DE-588)4311495-7 gnd Mikrofluidik (DE-588)4803438-1 gnd |
subject_GND | (DE-588)4137410-1 (DE-588)4311495-7 (DE-588)4803438-1 (DE-588)4113937-9 |
title | Complex microfluidics |
title_auth | Complex microfluidics |
title_exact_search | Complex microfluidics |
title_full | Complex microfluidics Bernhard K. Wunderlich |
title_fullStr | Complex microfluidics Bernhard K. Wunderlich |
title_full_unstemmed | Complex microfluidics Bernhard K. Wunderlich |
title_short | Complex microfluidics |
title_sort | complex microfluidics |
topic | Kanalströmung (DE-588)4137410-1 gnd Komplexe Flüssigkeit (DE-588)4311495-7 gnd Mikrofluidik (DE-588)4803438-1 gnd |
topic_facet | Kanalströmung Komplexe Flüssigkeit Mikrofluidik Hochschulschrift |
url | http://mediatum.ub.tum.de/node?id=1120771 https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20130109-1120771-0-9 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025910948&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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