Dealing with Supercritical Flow in Culvert

Mustaffa, Zahiraniza and Ghulam Rasool, Ayesha (2013) Dealing with Supercritical Flow in Culvert. In: ICESD 2013, January 19-20, Dubai.

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This paper proposes structural hydraulic models to control supercritical flows in culverts. Baffle blocks are designed to be placed in the culvert with the purpose of transforming supercritical into subcritical flow. The supercritical flow needs to be controlled so that scour will not occur at the downstream section of the culvert which is normally made of loose particles of the existing channel. The uncontrolled scour would eventually lead to failure in the embankment. Three baffle block designs were proposed in the experiments with different shapes and arrangement. It was noticed that the occurrence of
baffle blocks significantly dampen the supercritical flow, for which Froude number of the approaching flow becomes smaller and velocity becomes slower. This signifies that the supercritical flow has been entirely transformed to subcritical flow. Energy losses were also computed for all designs and the results were compared.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering
Departments / MOR / COE: Research Institutes > Institute for Sustainable Building
Depositing User: Dr. Zahiraniza Mustaffa
Date Deposited: 28 Apr 2015 02:54
Last Modified: 28 Apr 2015 02:54

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