English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Since a local scouring around spur-dikes or a groin decreases the stability of these structures, it is a very important problem on disaster prevention. Now, in the Meghna river in Bangladesh, the local scouring around the groin in the left bank of the just upstream of the Meghna bridge poses the problem. The feature of this local scouring is that the scouring hole is formed not around the upstream edge of the groin but in the more downstream by the influence of the low slope revetment. In this paper, we aim at the elucidation of the mechanism of this local scouring and discuss this phenomenon by the numerical analysis based on MacCormack scheme to the model river. The flow field is analyzed by 2-D and 3-D model, and the flow structure is discussed. Moreover, the local scouring is analyzed by 2-D model which can be applied to the bed evolution due to both bed and suspended loads, and the scouring process is discussed.

NUMERICAL ANALYSIS OF LOCAL SCOURING BY SEPARATION VORTEX AROUND LOW SLOPE REVETMENT