Results 21 to 30 of about 16,773 (290)

Heave motion suppression of a Spar with a heave plate [PDF]

open access: yesOcean Engineering, 2004
Abstract Vortex shedding flow of an oscillating vertical cylinder with a disk attached at its keel is considered. This configuration is of interest for the offshore oil and gas industry. A finite difference method is employed to solve the incompressible Navier–Stokes equations in the primitive-variables formulation.
Tao L, Cai S
openaire   +2 more sources

An impedance approach to reduce the contact-instability whilst drilling with active heave compensation [PDF]

open access: yes, 2012
The bit-bounce, or contact-instability, phenomenon which occurs in the drill string suspended from a floating vessel with an active drill string compensator to maintain a steady weight on the drill bit is investigated.
Hatleskog, Jan, Dunnigan, Mathew Walter
core   +1 more source

Necessity of Proper Lashing of Containers on the Ship's Deck as Part of Optimization of the Sea Voyage

open access: yesPromet (Zagreb), 2004
These days we are witnessing an increase of container trafficin general and at sea in particular. In order to economizetheir business the ship owners are building bigger container vesselswhich can carry up to 8000 TEUs (Maersk line) and otherbig carriers
Zoran Radišić
doaj   +1 more source

Wave Energy Harnessing in Shallow Water through Oscillating Bodies

open access: yesEnergies, 2018
This paper deals with wave energy conversion in shallow water, analyzing the performance of two different oscillating-body systems. The first one is a heaving float, which is a system known in the literature.
Marco Negri, Stefano Malavasi
doaj   +1 more source

Investigation of heave response of the deepwater octagonal FDPSO using various heave plate configurations [PDF]

open access: yes, 2017
\ua9 2017, Harbin Engineering University and Springer-Verlag GmbH Germany. Heave plates can be employed to control undesirable heave motion amplitudes of the deepwater octagonal Floating, Drilling, Production, Storage, and Offloading (FDPSO) platform ...
Yu C, Hu Z, Wang S
core   +4 more sources

Somatosensory Influence on Platform-Induced Translational Vestibulo-Ocular Reflex in Vertical Direction in Humans

open access: yesFrontiers in Neurology, 2020
The vestibulo-ocular reflex (VOR) consists of two components, the rotational VOR (rVOR) elicited by semicircular canal signals and the translational VOR (tVOR) elicited by otolith signals.
Dieter F. Kutz   +3 more
doaj   +1 more source

Secondary frost heave in freezing soils [PDF]

open access: yes, 1996
Frost heave describes the phenomenon whereby soil freezing causes upwards surface motion due to the action of capillary suction imbibing water from the unfrozen region below. The expansion of water on freezing is a small part of the overall surface heave
Noon, C.
core   +1 more source

frost-heave-models/frost-heave-models: models2.0

open access: yes, 2023
These are models used in the paper entitiled "Impedance factor of hydraulic conductivity for frozen soil based on the ice segregation theory and its application"
SinHaoCheng0216
core   +1 more source

Numerical Modeling and Validation of Time-Dependent Heave of Swelling Soil [PDF]

open access: yesJES: Journal of Engineering Sciences
Expansive soils pose a significant geotechnical challenge because of their volume changes in response to variations in moisture content. Unlike many soil types, expansive soils lack a widely adopted theoretical constitutive model for accurate numerical ...
Amgad Aref   +3 more
doaj   +1 more source

Experimental Study on Freezing Mode to Reduce Frost Heave

open access: yesBuildings, 2022
Frost heave is an important factor affecting the safety and practicability of buildings in cold regions or artificial freezing engineering. In order to reduce frost heave, frost-susceptible silty clay was used in a one-dimensional frost heave testing ...
Kun Hu   +4 more
doaj   +1 more source

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