Results 271 to 280 of about 8,902,814 (338)

Clear-Water Scour Mechanism at Vibrating Monopile Foundations

Journal of Hydraulic Engineering
Zishun Yao, Dawei Guan, Shengju Jin, Bruce W. Melville, Yee-Meng Chiew, Asaad Y. Shamseldin   +5 more
openaire   +2 more sources

Numerical investigation of hydrodynamic characteristics and local scour mechanism around submarine pipelines under joint effect of solitary waves and currents

Ocean Engineering, 2021
Submarine pipelines, as an important tool for oil and gas transportation, have been distributed in offshore oil and gas fields worldwide. Under extreme waves, a large number of submarine pipelines have been damaged in the past decades.
Enjin Zhao, Youkou Dong, Yuezhao Tang, Junkai Sun   +3 more
semanticscholar   +1 more source

A mechanism-based assessment framework for masonry arch bridges under scour-induced support rotation

, 2021
Increase in the frequency of flash floods owed to climate change, excessive sand mining, and urbanisation of watersheds has accelerated the need to quantify the structural effect of scour-induced structural damages in masonry arch bridges. The structural
J. George, A. Menon
semanticscholar   +1 more source

Mechanics of jet scour downstream of a headcut

Journal of Hydraulic Research, 1993
Scour immediately downstream of a headcut is analyzed by considering the effect of jet diffusion on sediment detachment. The analytical development results in equations for: 1.
O. R. Stein, P. Y. Julien, C. V. Alonso
openaire   +1 more source

Ice Scours as Trapping Mechanism for Shallow Gas

Proceedings, 2013
Shallow gas is commonly found on the Norwegian Continental Shelf and is a potential geohazard for drilling operations. Examples of shallow gas in Upper Pliocene sediments, in the Central North Sea is presented, and a model for how buried ice scours can act as a trapping mechanism for shallow gas is proposed.
K. Haavik, M. Landrø
openaire   +1 more source

A novel extreme gradient boosting algorithm based model for predicting the scour risk around bridge piers: application to French railway bridges

European Journal of Environmental and Civil Engineering, 2022
Bridge failures inevitably cause severe social consequences in terms of the economic losses or even human fatalities. Scour is one of the leading causes for bridge failures.
Tianyu Wang, P. Reiffsteck, C. Chevalier, Zhehao Zhu, Chi-Wei Chen, Franziska Schmidt   +5 more
semanticscholar   +1 more source

Controlling Mechanism of Local Scouring

Journal of Hydraulic Engineering, 1990
Experimental study of clear water scouring around a circular cylinder shows that the scour mechanism is coupled to the three-dimensional separation of the upstream boundary layer and the periodic vortex shedding in the wake of the cylinder. The first scour appears in the wake of the cylinder.
openaire   +1 more source

Mechanisms in anaerobic bioflocculation of wool scouring effluent

Water Research, 1994
Abstract The emulsified grease in wool scouring effluent (WSE) was demonstrably removed by bioflocculation under anaerobic conditions. The addition of anaerobic bacteria from biogas digestion to WSE resulted in grease reduction of 60–80% from the supernatant.
Lapsirikul, W., Ho, G., Cord-Ruwisch, R.
openaire   +1 more source

Tsunami Scour Mechanisms Around a Cylinder

2001
The scouring mechanism due to tsunami run-up around a vertical cylinder was investigated experimentally using a large-scale tsunami experimental facility. A variety of solitary waves were generated and allowed to run up onto a uniformly sloping sandy beach.
Harry Yeh, Fuminori Kato, Shinji Sato
openaire   +1 more source

Mechanism of aerobic biological destabilisation of wool scour effluent emulsions

Water Research, 2005
Wool scouring effluent is a highly polluted industrial wastewater in which the main pollutant, wool wax, is held in a stable oil-in-water emulsion by non-ionic detergent. The use of microbial action to cause emulsion destabilisation has been proposed as a new treatment strategy for this effluent stream. This strategy aims at improving aerobic treatment
Poole, A.J., Cord-Ruwisch, R., Jones, F.W.   +2 more
openaire   +2 more sources