A Numerical Study On Near-bed Flow
Mechanisms Around A Marine Pipeline Close To
A Flat Seabed Including Estimation Of Bedload
Sediment Transport
Author(s)
M. C. Ong, T. Utnes, L. E. Holmedal, D. Myrhaug
& B. Pettersen
Abstract
Near-bed flow mechanisms of high Reynolds number flows around a marine
pipeline close to a flat seabed have been studied using a two-dimensional
standard high Reynolds number k- model. The effects of gap to diameter ratio
and seabed roughness for a given boundary layer thickness of the inlet flow
upstream of the cylinder have been investigated. The vortex shedding
mechanisms have been investigated. Mean pressure, mean friction velocity and
the resulting mean bedload sediment transport along the bed have been
predicted. Overall it appears that for engineering design purposes the present
numerical model is suitable for predicting high Reynolds number flows, which
are present near the seabed in the real ocean.
Keywords: numerical model, pipeline, flat seabed, high Reynolds number.
Keywords
numerical model, pipeline, flat seabed, high Reynolds number
Related Book
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