Paper Search Console

Home Search Page About Contact

Journal Title

Title of Journal: Environ Fluid Mech

Search In Journal Title:

Abbravation: Environmental Fluid Mechanics

Search In Journal Abbravation:

Publisher

Springer Netherlands

Search In Publisher:

DOI

10.1002/mrc.1260271116

Search In DOI:

ISSN

1573-1510

Search In ISSN:
Search In Title Of Papers:

Twophase modeling of sediment clouds

Authors: Adrian C H Lai Bing Zhao Adrian WingKeung Law E Eric Adams
Publish Date: 2013/02/12
Volume: 13, Issue: 5, Pages: 435-463
PDF Link

Abstract

A sediment cloud release in stagnant ambient fluid occurs in many engineering applications Examples include land reclamation and disposal of dredged materials The detailed modeling of the distinct characteristics of both the solid and fluid phases of the sediment cloud is hitherto unavailable in the literature despite their importance in practice In this paper the twophase mixing characteristics of the sediment cloud are investigated both experimentally and theoretically Experiments were carried out to measure the transient depth penetration and the lateral spread of the sediment cloud and its entrained fluid using the laser induced fluorescence technique with a range of particle sizes frequently encountered in the field modeled at laboratory scale A twophase model of the sediment cloud that provides detailed predictions of the mixing characteristics of the individual phases is also proposed The entrained fluid characteristics are solved by an integral model accounting for the buoyancy loss due to particle separation in each time step The flow field induced by the sediment cloud is approximated by a Hill’s spherical vortex centered at the centroid and with the size of the entrained fluid The particle equation of motion under the effect of the induced flow governs each computational particle A random walk model using the hydrodynamic diffusion coefficient is used to account for the random fluctuation of particles in the dispersive regime Overall the model predictions of the twophase mixing characteristics are in good agreement with the experimental data for a wide range of release conditionsThis research was supported by the National Research Foundation Singapore through the SingaporeMIT Alliance for Research and Technology’s CENSAM IRG research programme We also acknowledge the anonymous reviewers for the comments and suggestions made which have improved the manuscript


Keywords:

References


.
Search In Abstract Of Papers:
Other Papers In This Journal:

  1. Numerical modeling of aquaculture dissolved waste transport in a coastal embayment
  2. Gas-phase and aerosol chemistry interactions in South Europe and the Mediterranean region
  3. Measurement of mass exchange processes and coefficients in a simplified open-channel lateral cavity connected to a main stream
  4. Turbulence suppression by suspended sediment within a geophysical flow
  5. Experimental study of wave dynamics in coastal wetlands
  6. Spatial evolution of coherent motions in finite-length vegetation patch flow
  7. Observations of the cross-wind velocity variance in the stable boundary layer
  8. Flow and drag force around a free surface piercing cylinder for environmental applications
  9. Numerical investigation of concentrations and concentration fluctuations around isolated obstacles of different shapes. Comparison with wind tunnel results
  10. A simplified approach to address turbulence modulation in turbidity currents as a response to slope breaks and loss of lateral confinement
  11. Coupling between free-surface fluctuations, velocity fluctuations and turbulent Reynolds stresses during the upstream propagation of positive surges, bores and compression waves
  12. Influence of jet aeration on pressures around a block embedded in a plunge pool bottom
  13. Initial mixing of inclined dense jet in perpendicular crossflow
  14. Estimating travel time of recharge water through a deep vadose zone using a transfer function model
  15. Theoretical modeling of suspended grain-size distribution in fluvial environment by stratification and secondary current approaches
  16. Moisture effects on eolian particle entrainment

Search Result: