Some basic concepts of wave sediment transport:
Saved in:
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
Lyngby
1979
|
| Series: | Institute of Hydrodynamics and Hydraulic Engineering <København>: Series paper.
20. |
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | Getr. Zählung |
Staff View
MARC
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| 245 | 1 | 0 | |a Some basic concepts of wave sediment transport |
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Record in the Search Index
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TABLE OF CONTENTS
Page
PREFACE 3
ABSTRACT 5
TABLE OF CONTENTS 7
LIST OF SYMBOLS 9
1 INTRODUCTION 1 3
2 CALCULATION OF BED SHEAR STRESSES UNDER WAVES 17
3 INITIATION OF SEDIMENT MOTION UNDER WAVES 21
Special conditions in experiments with
oscillating plates 26
4 THE MOTION OF SUSPENDED PARTICLES 29
Introduction 29
Equations of motion 31
First order approximation 34
Second order approximation 35
1st special case: a sand grain in a vortex 35
2nd special case: a sand grain in the flow
of a sinusoidal wave 39
Net drift of particles in oscillatory flow 40
Reduction of settling velocity by turbulence 45
5 WAVE RIPPLES 47
Introduction 47
Qualitative considerations 47
Quantitative results concerning ripple geometry 55
Steepness 55
Ripple length 62
Direct determination of the ripple height 71
The ripple pattern 74
Concluding remarks about ripples 75
8
Page
6 SUSPENSION UNDER WAVES 77
Introduction 77
Physical description 77
Literature review 80
Suspension under standing waves 85
Concluding remarks about suspension under
standing waves 92
Quantitative description of the c-profile 92
The influence of sediment grading on the
c-profile 94
Example 97
Influence of sediment grading on diffusivity
measurements 99
Determination of the true diffusivity from a
measured c-profile 101
Example 103
Influence of the vertical potential flow
velocity on a measured c-profile 105
Increase of measured diffusivity due to
vertical potential flow 107
Empirical results about e under non-breaking
waves 110
Diffusivity under breaking waves 118
Concluding remarks about the diffusivity 121
Magnitude of CQ 121
7 A PREDICTIVE MODEL FOR SEDIMENT TRANSPORT
UNDER WAVES AND A WEAK CURRENT 125
Introduction 125
Variation of the pick-up function 126
General solution 129
Fixing of the parameters e and Pq 133
1st example: Sinusoidal wave motion 133
2nd example: Second order Stokes wave 135
Comparison with experiments 137
Discussion of the model 141
8 REFERENCES 143
APPENDIX 152
ISVA s flume experiments on ripple generation
|
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| indexdate | 2024-07-09T15:41:29Z |
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| language | English |
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| series2 | Institute of Hydrodynamics and Hydraulic Engineering <København>: Series paper. |
| spelling | Nielsen, Peter Verfasser aut Some basic concepts of wave sediment transport Lyngby 1979 Getr. Zählung txt rdacontent n rdamedia nc rdacarrier Institute of Hydrodynamics and Hydraulic Engineering <København>: Series paper. 20. Sediment transport Water waves (DE-588)4113937-9 Hochschulschrift gnd-content Institute of Hydrodynamics and Hydraulic Engineering <København>: Series paper. 20. (DE-604)BV002414656 20. HEBIS Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=001425247&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Nielsen, Peter Some basic concepts of wave sediment transport Institute of Hydrodynamics and Hydraulic Engineering <København>: Series paper. Sediment transport Water waves |
| subject_GND | (DE-588)4113937-9 |
| title | Some basic concepts of wave sediment transport |
| title_auth | Some basic concepts of wave sediment transport |
| title_exact_search | Some basic concepts of wave sediment transport |
| title_full | Some basic concepts of wave sediment transport |
| title_fullStr | Some basic concepts of wave sediment transport |
| title_full_unstemmed | Some basic concepts of wave sediment transport |
| title_short | Some basic concepts of wave sediment transport |
| title_sort | some basic concepts of wave sediment transport |
| topic | Sediment transport Water waves |
| topic_facet | Sediment transport Water waves Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=001425247&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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