Results 21 to 30 of about 124,500 (193)

THEMIS Observations of Particle Acceleration by a Magnetosheath Jet‐Driven Bow Wave

open access: yesGeophysical Research Letters, 2019
Localized magnetosheath jets with high dynamic pressure are frequently observed downstream of Earth's bow shock. When such a fast magnetosheath jet compresses the ambient magnetosheath plasma, an earthward compressional bow wave could form.
Terry Z. Liu   +5 more
doaj   +1 more source

Wave-making resistance reduction characteristics based on spherical bow configuration

open access: yesZhongguo Jianchuan Yanjiu, 2017
Nowadays, the mechanism of a bulbous bow on resistance reduction is still ambiguous. By carry-ing out a study of wave-making resistance based on spherical bow configuration, we can reveal the truth of the problem and find out the effect of reducing ...
ZHANG Wenshan, LU Xiaoping
doaj   +1 more source

Investigation of the Bulbous Bow Effect on the Resistance of a Container Ship by CFD Method

open access: yesنشریه مهندسی دریا, 2021
In commercial ships, wave making resistance is a part of total resistance which to reduce it, a bulbous bow is added to the ship bow. To investigate the effect of bulbous bow on total resistance, a container ship model is simulated with and without the ...
Mohammad Said Shamshiri   +1 more
doaj  

Bond-order wave phase, spin solitons and thermodynamics of a frustrated linear spin-1/2 Heisenberg antiferromagnet [PDF]

open access: yes, 2010
The linear spin-1/2 Heisenberg antiferromagnet with exchanges $J_1$, $J_2$ between first and second neighbors has a bond-order wave (BOW) phase that starts at the fluid-dimer transition at $J_2/J_1 = 0.2411$ and is particularly simple at $J_2/J_1 = 1/2$.
Manoranjan Kumar   +6 more
core   +2 more sources

Analysis of Effect of Bulbous Bow Shape to Ship Resistance in Catamaran Boat

open access: yesMATEC Web of Conferences, 2018
Ship resistance is one of the main factors affecting the design of a ship. Catamaran boat is a ship with small wet surface area that able to reduce drag and improve ship power. Generally, a bulbous bow is implemented to reduce wave resistance because the
Chrismianto Deddy   +2 more
doaj   +1 more source

Analysis of added resistance and seakeeping responses in head sea conditions for low-speed full ships using URANS approach

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2017
The KVLCC2 and its modified hull form were investigated in regular head waves using Unsteady Reynolds Averaged Navier–Stokes (URANS) methods. The modified KVLCC2 (named KWP-bow KVLCC2) is designed for reducing wave reflection from the bow.
Yoo-Chul Kim   +5 more
doaj   +1 more source

Motion Response Characteristics of Small Fishing Vessels of Different Sizes among Regular Waves

open access: yes한국해양공학회지, 2023
The motion of small fishing vessels is significantly affected by small waves, leading to accidents, such as capsizing or sinking. This paper presents the results of two types of basin tests.
DongHyup Youn, LeeChan Choi, JungHwi Kim
doaj   +1 more source

Numerical Study on the Green-Water Loads and Structural Responses of Ship Bow Structures Caused by Freak Waves

open access: yesApplied Sciences, 2023
In recent decades, freak waves, characterized by their unusual high amplitude, sharp crest, and concentrated energy, have attracted researchers’ attention due to their potential threat to marine structures.
Chengzhe Zhang   +6 more
doaj   +1 more source

A study on the impact load acting on an FPSO bow by steep waves

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2017
Various offshore structures such as FPSO, FSO, Semi-submersible, TLP and Spar are operated to develop offshore oil and gas fields. Most of the offshore structures shall be operated over 20 years under the harsh environments at sites so that the offshore ...
Sam-Kwon Hong   +5 more
doaj   +1 more source

First simultaneous measurements of waves generated at the bow shock in the solar wind, the magnetosphere and on the ground [PDF]

open access: yesAnnales Geophysicae, 2009
On 5 September 2002 the Geotail satellite observed the cone angle of the Interplanetary Magnetic Field (IMF) change to values below 30° during a 56 min interval between 18:14 and 19:10 UT. This triggered the generation of upstream waves at the bow
L. B. N. Clausen   +5 more
doaj   +1 more source

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