Bridge pier and abutment scour preventing apparatus with vortex generators
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United States of America Patent
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Jan 8, 2013
Grant Date -
May 31, 2012
app pub date -
May 26, 2011
filing date -
Jun 1, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is a manufactured three-dimensional convex-concave fairing with attached vortex generators, for hydraulic structures such as bridge piers and abutments, whose shape prevents the local scour problem around such hydraulic structures. The device is a conventionally made concrete or fiber-reinforced composite, or combination of both, vortex generator equipped hydrodynamic fairing that is fit or cast over an existing or new hydraulic structure around the base of the structure and above the footing. The vortex generators are positioned so as to energize decelerating near wall flow with higher-momentum outer layer flow. The result is a more steady, compact separation and wake and substantially mitigated scour inducing vortical flow.
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