Results 221 to 230 of about 1,222 (261)

Experimental Investigation of Clear-Water Local Scour of Compound Piers

Journal of Hydraulic Engineering, 2009
Local scour around complex piers under steady clear-water condition was studied experimentally for a variety of configuration, including different sizes and shapes of complex piers. A total of 70 experiments were carried out. Three sets of experiments were performed over the entire range of possible pile cap elevations for complex piers with different ...
B. Ataie‐Ashtiani, Z. Baratian‐Ghorghi, A. A. Beheshti   +2 more
openaire   +1 more source

Scour of Clear Water Rock W-Weirs in Straight Rivers

Journal of Hydraulic Engineering, 2014
AbstractScour characteristics downstream of rock W-weir structures were studied in a horizontal straight channel and under clear water conditions. For each structure, different hydraulic conditions were considered, including densimetric Froude numbers, water drops, and tailwaters.
PAGLIARA, STEFANO, Sahameddin Mahmoudi Kurdistani, Liborio Cammarata   +2 more
openaire   +3 more sources

Clear-Water Scour at Abutments in Thinly Armored Beds

Journal of Hydraulic Engineering, 2004
Experiments on local scour at short abutments (ratio of abutment length to approaching flow depth less than unity), namely vertical-wall, 45° wing-wall, and semicircular, embedded in a bed of relatively fine noncohesive sediment overlain by a thin armor-layer of coarser sediment, were conducted for different flow conditions, thickness of armor-layers ...
Subhasish Dey, Abdul Karim Barbhuiya
openaire   +1 more source

Clear‐Water Scour around Bridge Pier Group

Journal of Hydraulic Engineering, 1994
Recent attempts have been made to reduce scour around solid circular piers. Such attempts use riprap, a circular collar around, a rectangular slot through, and a delta wing‐like fin ahead of piers. Providing another scour reduction device, the present paper replaces the solid pier by a group of three smaller piers.
Nandana Vittal, U. C. Kothyari, Morteza Haghighat   +2 more
openaire   +1 more source

Equilibrium Clear-Water Scour around an Abutment

Journal of Hydraulic Engineering, 1997
The author presents a semiempirical analysis of equilibrium local clear-water scour at a bridge abutment that is based on the flow-continuity equation, scour geometry, and a generalized form of the power-law formula for flow resistance in an alluvial channel.
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Clear-water scour at long skewed bridge piers

Journal of the Chinese Institute of Engineers, 2016
AbstractThe results of an experimental study on clear-water scour at long skewed rectangular piers under steady flows at threshold velocity are presented. The scour mechanisms due to skewness effects with a wide range of angle of attack, α, and two sizes of uniform cohesionless bed sediment (d50 = 0.23 and d50 = 0.80 mm) have been investigated in a 50 ...
Ahmad, N, Melville, Bruce, Mohammad, T, Faisal, A, Yusuf, B   +4 more
openaire   +2 more sources

Temporal Evolution of Clear-Water Pier and Abutment Scour

Journal of Hydraulic Engineering, 2002
Scour related to bridge hydraulics received much attention in the past decade, including its relation to flood hydrology and hydraulic processes in addition to steady flow. This paper presents new research on bridge pier and abutment scour based on a large data set collected at ETH Zurich, Switzerland.
OLIVETO, Giuseppe, W. H. HAGER
openaire   +3 more sources

Clear-water scour depth below underwater pipelines

Journal of Hydro-environment Research, 2007
Abstract The paper presents (1) a semi-theoretical model for the computation of maximum clear-water scour depth below underwater pipelines in uniform sediments under steady flow and (2) an experimental investigation on the influence of upward seepage on clear-water scour depth below underwater pipelines.
Subhasish Dey, Navneet P. Singh
openaire   +1 more source

Clear-water scour at submerged pile groups

2013
Groups of piles are frequently used as bridge foundations. Different group configurations, characterized by different pile spacing, skew-angle, number, and arrangement of pile group columns interact differently with the flow field and lead to different scour patterns and equilibrium scour depth.
Rui Lança, Cristina Fael, Rodrigo Maia, João P. Pêgo, António H. Cardoso   +4 more
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An investigation of general clear-water scour in a long contraction

2022
This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
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