Results 21 to 30 of about 9,144,744 (158)

Analysis of a Main Cabin Ventilation System in a Jack-Up Offshore Platform Part I: Numerical Modelling [PDF]

Applied Sciences, 2019
This work aims to measure the thermodynamics of a main cabin ventilation system in a JU-2000E jack-up offshore platform. A three-dimensional (3D) physical model of the ventilation system was established, and the computational fluid dynamics (CFD) software (ANSYS FLUENT) was used to calculate the model thermodynamics. Numerical analysis was performed to
Yingchun Xie, Zepeng Zheng, Huibin Wang, Zhen Xu, Guijie Liu, Reza Malekian, Zhixiong Li   +6 more
openaire   +3 more sources

Weld toe stress concentrations in multi-planar stiffened tubular KK joints [PDF]

, 2009
This paper reports a parametric stress analysis of various configurations of rack plate stiffened multi-planar welded KK joints using the finite element method.
Woghiren, C. O., Brennan, Feargal P.
core   +1 more source

A comparison of jack-up spudcan penetration predictions and recorded field data

, 2021
Installing jack-up spudcan foundations in layered seabed is still challenging in the offshore industry. Before operation, the stability of the jack-up has to be proven by geotechnical analyses. The prediction of leg penetration and possible soil failure (
Li, Zheming, Coronado, Johan, Leo, Chin Jian (R8045), Liyanapathirana, Samanthika (R14043), Hu, Pan (R19627), Haghighi, Ali   +5 more
core   +1 more source

Numerical Simulation and Theoretical Analysis of Wave Loads on Truss Legs for Offshore Energy Platforms

Energies
Jack-up offshore platforms, supported by truss legs, are integral to the development of marine energy resources, including oil, gas, and offshore wind.
Haoxun Yuan, Yingchun Xie, Di-Lin Chen, Jintong Huang, Cheng-Long Zhou, Xiangkun Li, Guijie Liu, Jinchi Zhu   +7 more
doaj   +1 more source

High Strength Steel Fatigue Crack Growth Database for Offshore Renewable Energy Applications

Fatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT High strength steels can reduce costs and carbon emissions in offshore renewable energy, but their effect on structural integrity remains unclear. In welded structures, such as support structures for offshore wind and tidal turbines, fatigue life is dominated by crack growth from flaws at weld toes.
Machar Devine, Moray Stiven, Madison Asbury, Ali Mehmanparast   +3 more
wiley   +1 more source

Under the cover of darkness: Foraging behaviour increases on cloudy, new moon nights in a pelagic seabird

Ibis, EarlyView.
While many visual predators feed exclusively during the day, others exploit foraging opportunities at night, although the efficiency with which they do so is strongly influenced by ambient light levels. We investigated the influence of variation in nocturnal light on the foraging behaviour of a small pelagic seabird, the European Storm‐petrel ...
Darren Wilkinson, Adam Kane, Mark Jessopp, John L. Quinn   +3 more
wiley   +1 more source

Experimental Study on the Distribution of Wave-Induced Excess Pore Pressure in a Sandy Seabed around a Mat Foundation

Journal of Marine Science and Engineering, 2019
Mat foundations are widely used in jack-up offshore platforms to support and transfer loads. Regarding mat foundations working on the seabed, the excess wave-induced pore pressure is critical to seabed stability, which may finally cause structural ...
Qingyun Yuan, Chencong Liao, Xianglian Zhou   +2 more
doaj   +1 more source

Crawling under the radar: Two novel Paulinella species expand knowledge about the ecology and evolution of a primary plastid‐containing amoeba lineage

Journal of Phycology, EarlyView.
Abstract The genus Paulinella represents a rare, independent case of primary endosymbiosis, providing a unique system to study the early stages of organelle evolution. Here, we expand current understanding of primary plastid endosymbiosis through the discovery and characterization of two novel photosynthetic amoebae, Paulinella marae sp. nov.
Julia Van Etten, Sungpil Han, John A. Burns, Duckhyun Lhee, Andrew C. Willoughby, Timothy G. Stephens, Erin Chille, Robin S. Sleith, Debashish Bhattacharya, Hwan Su Yoon   +9 more
wiley   +1 more source

Integrating Multiple Data Sources Improves Abundance Estimation in Spatial Capture–Recapture Models

Ecology and Evolution, Volume 16, Issue 10, October 2026.
This study demonstrates how integrating multiple data streams improves abundance estimation for a wide‐ranging marine population, eastern North Pacific blue whales. The application of this approach is valuable to accurately track population size which is critical to guide conservation and management strategies.
Georgina Whittome, John Calambokidis, Philip S. Hammond, Ladd Irvine, Bruce R. Mate, Daniel M. Palacios, Sophie Smout, Chris Sutherland   +7 more
wiley   +1 more source

The Impact of Operation History on Jack-up Structure Reliability [PDF]

TransNav
In the Polish Baltic Sea region, jack-up structures, apart from existing offshore oil and gas offshore infrastructure, will be used for further wind farm installation.
Agnieszka Blokus-Dziula, Dawid Dobrzanski   +1 more
doaj   +1 more source