Experimental study of local scour around T-shaped spur dike in a meandering channel

A spur dike is mainly constructed as a river-training structure and is primarily used to prevent bank erosion. The restriction to flow caused by the construction of a spur dike promotes local scour around the structure. In the case of a dike placed in a channel bend, the scour becomes more aggressiv...

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Autores principales:	Ravi Prakash Tripathi, K. K. Pandey
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	bank erosion bend local scour meander river training structure spur dike Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/70fbf347b5e548a6b4ec9e5c29ed05ac
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spelling	oai:doaj.org-article:70fbf347b5e548a6b4ec9e5c29ed05ac2021-11-06T07:09:05ZExperimental study of local scour around T-shaped spur dike in a meandering channel1606-97491607-079810.2166/ws.2020.331https://doaj.org/article/70fbf347b5e548a6b4ec9e5c29ed05ac2021-03-01T00:00:00Zhttp://ws.iwaponline.com/content/21/2/542https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798A spur dike is mainly constructed as a river-training structure and is primarily used to prevent bank erosion. The restriction to flow caused by the construction of a spur dike promotes local scour around the structure. In the case of a dike placed in a channel bend, the scour becomes more aggressive. The literature review found that the research work related to local scour around a spur dike located in a meandering channel is very limited or minimal. Therefore, an experimental investigation was conducted to study the local scour process around a T-shaped spur dike placed at different locations along the outer bank (or concave) of a reverse-meandering channel. Non-dimensionalized empirical equations for temporal and maximum local scour depth were developed as the function of the Froude number of approach flow and spur dike location. It is observed that local scour around the dike increases with the increase in Froude number and location in the meander (measured from the entry to meander). The formulation for the maximum scour depth was further evaluated with the experimental data related to the 180° bend, from literature, and it was found that the proposed equation's application is very much limited. HIGHLIGHTS Scour process is studied around T-shaped spur dike located in reverse meandering channel.; Various factors affecting scour such as Froude number of approach flow, time of scouring, and spur dike have been evaluated and studied in detail.; Empirical relations have been developed to estimate temporal and maximum scour depth.; Some experimental observations regarding flow pattern and bed topography has been discussed.;Ravi Prakash TripathiK. K. PandeyIWA Publishingarticlebank erosionbendlocal scourmeanderriver training structurespur dikeWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 2, Pp 542-552 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bank erosion bend local scour meander river training structure spur dike Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	bank erosion bend local scour meander river training structure spur dike Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Ravi Prakash Tripathi K. K. Pandey Experimental study of local scour around T-shaped spur dike in a meandering channel
description	A spur dike is mainly constructed as a river-training structure and is primarily used to prevent bank erosion. The restriction to flow caused by the construction of a spur dike promotes local scour around the structure. In the case of a dike placed in a channel bend, the scour becomes more aggressive. The literature review found that the research work related to local scour around a spur dike located in a meandering channel is very limited or minimal. Therefore, an experimental investigation was conducted to study the local scour process around a T-shaped spur dike placed at different locations along the outer bank (or concave) of a reverse-meandering channel. Non-dimensionalized empirical equations for temporal and maximum local scour depth were developed as the function of the Froude number of approach flow and spur dike location. It is observed that local scour around the dike increases with the increase in Froude number and location in the meander (measured from the entry to meander). The formulation for the maximum scour depth was further evaluated with the experimental data related to the 180° bend, from literature, and it was found that the proposed equation's application is very much limited. HIGHLIGHTS Scour process is studied around T-shaped spur dike located in reverse meandering channel.; Various factors affecting scour such as Froude number of approach flow, time of scouring, and spur dike have been evaluated and studied in detail.; Empirical relations have been developed to estimate temporal and maximum scour depth.; Some experimental observations regarding flow pattern and bed topography has been discussed.;
format	article
author	Ravi Prakash Tripathi K. K. Pandey
author_facet	Ravi Prakash Tripathi K. K. Pandey
author_sort	Ravi Prakash Tripathi
title	Experimental study of local scour around T-shaped spur dike in a meandering channel
title_short	Experimental study of local scour around T-shaped spur dike in a meandering channel
title_full	Experimental study of local scour around T-shaped spur dike in a meandering channel
title_fullStr	Experimental study of local scour around T-shaped spur dike in a meandering channel
title_full_unstemmed	Experimental study of local scour around T-shaped spur dike in a meandering channel
title_sort	experimental study of local scour around t-shaped spur dike in a meandering channel
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/70fbf347b5e548a6b4ec9e5c29ed05ac
work_keys_str_mv	AT raviprakashtripathi experimentalstudyoflocalscouraroundtshapedspurdikeinameanderingchannel AT kkpandey experimentalstudyoflocalscouraroundtshapedspurdikeinameanderingchannel
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Experimental study of local scour around T-shaped spur dike in a meandering channel

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