Sedimentation and Sediment... | Buy

It is evident, that for a number of ecological and technical problems in rivers and lakes a better knowledge of sediment transport and sedimentation is needed together with the ability to predict and simulate sediment behaviour. On the other hand, a stagnation of research in these topics could be observed in the last decades. At the Symposium an attempt was made to present new results in mathematics and natural sciences relevant for the sediment problem. New strategies were discussed to tackle the complexity of the problem. Basic theoretical research and laboratory experiments alone are incomplete without a feedback from field observations and measurements. For that reason well-known researchers from both basic and engineering sciences were invited. Turbulence, non-local phenomena, stability, interaction, feedback systems, self-organization, two-phase flow and chaotic processes, numerical simulations as well as measurement techniques and field results were the keywords of the Symposium. This proceedings are a good source for those interested in the state of the art.

PREFACE

ix

I. TURBULENCE, MAINLY ITS NON-LOCAL ASPECTS

Some mathematical contributions to the understanding of turbulence

3

(8)

C. Bardos

Nonlocality in turbulence

11

(12)

A. Tsinober

Effect of a roughness transition on turbulent structures in the outer layer

23

(6)

M. Guala, K T. Christensen & R.J. Adrian

Stokes flows at infinite Rayleigh number

29

(14)

D. Dritschel

Turbulent boundary layers over compliant walls: Low-dimensional models and direct simulations

43

(8)

D. Rempfer, L. Pearson, s. Xu & J. Lumley

The energetics and the heat and mass transfer in unsteady stratified turbulence

51

(6)

H. Hanazaki

II. TURBULENCE AND SEDIMENT TRANSPORT, TURBULENCE AND SEDIMENTATION

The probability of sediment movement at the threshold of motion and time dependent fluid processes

57

(4)

CL. Dancey & P. Diplas

Turbulence dynamics in a two-phase flow

61

(6)

A. Gaion

Investigation of particle size distribution in turbulent open channel flow

67

(8)

T. Dreher & B. Westrich

Entrainment of large particles from granular bed protections under low-mobility transport conditions

75

(4)

B. Hofland, R. Booij & H. Fontijn

Interaction between turbulent open-channel flow and pressure fluctuations in surface gravel layer

79

(4)

M. Detert, G. Kühn & M. Klar

Two-phase flow analysis of sediment velocity

83

(4)

B.P. Greimann

Experimental measurement of sediment suspension and particle kinetic stress transport within a horizontal channel flow

87

(6)

K. Kiger, C. Pan & A. Rivero

III. TURBULENT STRUCTURES AND SEDIMENT TRANSPORT

Turbulent structure of excited axisymmetric impinging jet

93

(8)

S. Alekseenko, A. Bilsky, O. Heinz, B. Ilyushin & D. Markovich

Resuspension by droplets

101

(4)

S.B. Dalziel & M.D. Seaton

Particle resuspension by an impacting vortex ring

105

(6)

R.J. Munro & S.B. Dalziel

IV. TWO-PHASE FLOWS

On the effects of Stokes, Richardson, and stability numbers in persistent and accelerating vortices

111

(10)

A. Burgisser, G.W. Bergantz & R.E. Breidenthal

Centrifugal sedimentation processes in suspensions - fundamentals and challenges of efficient simulation

121

(6)

M. Ungarish

On the one-dimensional flow approximation in sedimentation processes

127

(4)

W. Schneider

Particle swarms settling in calm water

131

(6)

J. Bühler & D.A. Papantoniou

Flow of media with high nanoparticles' concentrations

S.P. Bardakhanov

137

(8)

V. SELF ORGANIZATION IN SEDIMENTATION PROCESSES

The effect of homogeneous isotropic turbulence on the settling of heavy particles

145

(4)

A. Aliseda, A. Cartellier & J.C. Lasheras

Numerical investigation of two-way coupling mechanisms in dilute, particle laden flows

149

(6)

E. Meiburg

Statistics of turbulence-induced fluctuations of particle concentration

155

(4)

G. Falkovich, A. Fouxon & M. Stepanov

Numerical simulation of the coherent structures in a homogeneous sedimenting suspension

159

(6)

E.S. Asmolov

Simulation of particle flow using particle methods. A p3m algorithm for charged particulates

165

(6)

J.H. Walther, S. Kern & P. Koumoutsakos

VI. SELF ORGANIZATION IN SEDIMENT TRANSPORT

LDV, PTV and LES investigation of flow over a fixed dune

171

(8)

R. Balachandar, C. Polotel, B-S. Hyun, K.Yu, C-L. Lin, W. Yue & V.C. Patel

Sediment continuity for rivers with non-uniform sediment, dunes, and bed load transport

179

(4)

A. Blom, J.S. Ribberink & G. Parker

The self-organization of ripples towards two-dimensional forms

183

(4)

A. Gyr

An integro-differential model for the dynamics of aeolian sand ripples

187

(8)

N.J. Balmforth, A. Provenzale. & H. Ylzhaq

Simulation of sedimentation and mixing in deeply-submerged gravity currents

195

(8)

F. Necker, C. Härtel, L. Kleiser & E. Meiburg

VII. PROBLEMS RELATED TO FIELD MEASUREMENTS AND INPUTS NEEDED FOR NUMERICAL MODELS

River braiding in relation to unsteady water and sediment transport

203

(4)

H.M.Habersack

On the validity and limits of continuous-phase modelling of sediment transport in estuaries and coastal zones

207

(4)

E.A. Toorman

Modeling the hydraulics and erosion process in breach formation due to overtopping

211

(10)

P. Wang & R. Kahawita

Grain-size specific suspended sediment transport and flow resistance in large sand-bed rivers

221

(8)

S. Wright & G. Parker

Transport thresholds in gravel-bed rivers

229

(8)

P. C. Klingeman

Advancements in sediment transport investigations using quantitative imaging techniques

237

(4)

M. Muste

A Lid-driven Elongated Annular Flume (LEAF) for the determination of sediment transport properties

241

(4)

O. Wai

Petroleum patch transport in marine and coastal zones

245

(6)

T.S. Krasnopolskaya & V. V. Meleshko

VIII. MEASURING TECHNIQUES

Velocity derivatives in turbulent flow obtained from 3D-PTV measurements

251

(4)

B. Lüthi & U. Burr

Low coherence techniques for imaging in multiphase flows

255

(14)

T. Rösgen & R. Totaro

KEYWORD INDEX

269

(1)

AUTHOR INDEX

270

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