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040 _aWSPC
_beng
_cWSPC
050 0 4 _aGB451.2
_b.N533 1992
072 7 _aTEC
_x009020
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082 0 4 _a551.4/57
_223
100 1 _aNielsen, Peter.
_920656
245 1 0 _aCoastal bottom boundary layers and sediment transport
_h[electronic resource] /
_cPeter Nielsen.
260 _aSingapore :
_bWorld Scientific,
_c[2019], c1994.
300 _a1 online resource (xxiii, 324 p.) :
_bill.
490 1 _aAdvanced series on ocean engineering ;
_vv. 4
538 _aMode of access: World Wide Web.
504 _aIncludes bibliographical references and indexes.
520 _aThis book is intended as a useful handbook for professionals and researchers in the areas of Physical Oceanography, Marine Geology, Coastal Geomorphology and Coastal Engineering and as a text for graduate students in these fields. With its emphasis on boundary layer flow and basic sediment transport modelling, it is meant to help fill the gap between general hydrodynamic texts and descriptive texts on marine and coastal sedimentary processes. The book commences with a review of coastal bottom boundary layer flows including the boundary layer interaction between waves and steady currents. The concept of eddy viscosity for these flows is discussed in depth because of its relation to sediment diffusivity. The quasi-steady processes of sediment transport over flat beds are discussed. Small scale coastal bedforms and the corresponding hydraulic roughness are described. The motion of suspended sand particles is studied in detail with emphasis on the possible suspension maintaining mechanisms in coastal flows. Sediment pickup functions are provided for unsteady flows. A new combined convection-diffusion model is provided for suspended sediment distributions. Different methods of sediment transport model building are presented together with some classical models.
505 0 _aBottom boundary layer flow. The boundary layer and the flow above it ; The nature of oscillatory boundary layers ; Oscillatory boundary layer models ; Wave-generated currents ; Wave-current boundary layer interaction -- Sediment mobility, bed-load and sheet-flow. Forces on sediment particles ; Incipient sediment motion ; Bed-load transport in steady flow ; Bed-load and sheet-flow under waves -- Bedforms and hydraulic roughness. Introduction ; Coastal bedform regimes ; Bedform dynamics ; Vortex ripples ; Bedforms in combined wave-current flows ; Hydraulic roughness of natural sand beds -- The motion of suspended particles. Introduction ; Settling velocity ; Equation of motion for suspended particles ; Accelerating sediment in a resting fluid ; Sediment particles in accelerated flow ; Sediment trapping by vortices ; Particles settling through turbulence -- Sediment suspensions. Introduction ; The nature of sediment suspensions ; Pickup functions ; Suspended sediment distribution models -- Sediment transport models. Introduction ; Transport models: in essence two varieties ; Shore normal transport over vortex ripples ; Shore normal sediment transport over flat beds ; Shore parallel sediment transport -- Loose ends and future directions.
650 0 _aCoast changes.
_93756
650 0 _aMarine sediments.
_93322
655 4 _aElectronic books.
_93294
830 0 _aAdvanced series on ocean engineering ;
_vv. 4.
_92608
856 4 0 _uhttps://www.worldscientific.com/worldscibooks/10.1142/1269#t=toc
_zAccess to full text is restricted to subscribers.
942 _cEBK
999 _c72511
_d72511