Scour development in complex sediment beds

• Type: Article in International Conference Proceedings Book
• Date: 2012

Authors

Porter, K (Author) Other; Simons, R (Author) Other; Harris, J (Author) Other; Tiago Ferradosa (Author) Other

Conference proceedings International

Title: Proceedings of the Coastal Engineering Conference

33rd International Conference on Coastal Engineering 2012, ICCE 2012

Santander, 1 July 2012 through 6 July 2012

Indexing

Scopus - 3 Citations

Other information

Authenticus ID: P-00Q-D92

Abstract (EN): Offshore windfarms are often situated in complex sediment beds made up of layers and mixtures of sands, gravels and clays. However, little is known about how these types of sediment beds actually affect the scour process. Therefore, a series of laboratory tests were conducted to test simplified cases of layered and mixed sediment beds, as a basis for improving understanding of scour in complex situations. Two sands were used in the tests; one fine and one coarse with 0.2 and 0.6mm respective median grain sizes. In the layered case with fine sand as the upper layer, it was found that scour development in the underlying coarse sand was enhanced compared to scour in a uniform bed of the coarse sand. In the mixed case the shape of the scour curve was significantly altered as were the time to equilibrium and equilibrium scour depth.

Language: English

Type (Professor's evaluation): Scientific