Flow structures and circulation due to meandering geometry in a stratified sea strait


ÖZTÜRK M.

REGIONAL STUDIES IN MARINE SCIENCE, vol.55, 2022 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 55
  • Publication Date: 2022
  • Doi Number: 10.1016/j.rsma.2022.102607
  • Journal Name: REGIONAL STUDIES IN MARINE SCIENCE
  • Journal Indexes: Science Citation Index Expanded, Scopus, BIOSIS
  • Keywords: Sea straits, Meandering geometry, The Bosphorus, Flow circulation, Hydrodynamics, 3D numerical modeling, SECONDARY CURRENTS, WATER EXCHANGE, BOHAI STRAIT, ISTANBUL, TRANSPORT, SYSTEM, RIVER, VARIABILITY, HYDRAULICS, SEDIMENT

Abstract

Combining with local topography (i.e., the presence of a bar or a sill on the bottom and the shape of the coastline), the meandering geometry of straits, which have more complex geomorphological formations compared to rivers, reveals different circulation patterns in the coastal region and central part of the strait. Identifying circulation patterns in meanders is crucial to managing those waterways in several aspects (i.e. monitoring the transport of contamination, wastewater outfall, etc.). In the present study, the flow circulations in some meanders of a strait (the Bosphorus), which presents a two-layered flow, are analyzed using the calibrated 3D model. Each of the four selected meanders has a unique shape: 1) expansion on both sides, 2) expansion on one side, 3) with a constant width, and 4) an estuary connected from one side.