Results 1 to 10 of about 10,889,129 (322)

Hydrodynamic performance of Ordovician archaeostracan carapaces. [PDF]

PLoS One
The diversification of macroscopic pelagic arthropods such as caryocaridid archaeostracans was a crucial aspect of the Great Ordovician Biodiversification Event, and the plankton revolution. A pelagic mode of life has been inferred for caryocaridids from their common presence in black graptolitic shales alongside carapace morphologies that appear ...
Pates S, Xue Y.
europepmc   +6 more sources

Numerical Investigation on Hydrodynamic Performance of a Portable AUV

Journal of Marine Science and Engineering, 2021
This paper conducts a numerical investigation on the hydrodynamic performance of a portable autonomous underwater vehicle (AUV). The portable AUV is designed to cruise and perform some tasks autonomously in the underwater world.
Lin Hong, Renjie Fang, Xiaotian Cai, Xin Wang   +3 more
doaj   +2 more sources

Numerical and Experimental Investigations on Hydrodynamic Performance of a Newly Designed Deep Bottom Trawl

Frontiers in Marine Science, 2022
In this paper, a new type of bottom trawl was designed for target fishing vessels to use in deep-water fishing grounds. The trawl’s hydrodynamic performance was investigated using numerical simulation and physical modeling methods, and a numerical model ...
Qinglong Guan, Qinglong Guan, Qinglong Guan, Wenbin Zhu, Wenbin Zhu, Wenbin Zhu, Aizhong Zhou, Yongjin Wang, Weiyao Tang, Rong Wan   +9 more
doaj   +2 more sources

Comparative Analysis of Hydrodynamic Performance for Flapping Hydrofoils Driven by Three Typical Transmission Mechanisms [PDF]

Biomimetics
This study aims to optimize bionic hydrofoil propulsion performance and establish design guidelines for efficient transmission mechanisms by comparing three mechanisms (crank-slider, cylindrical cam, and synchronous belt drive).
Ertian Hua, Sihan Li, Xiaopeng Wu, Yang Lin   +3 more
doaj   +2 more sources

Miniature Underwater Glider Hydrodynamic Performance

OCEANS 2022, Hampton Roads, 2022
<p>Defining the hydrodynamic properties of an underwater glider is a critical operation that should be properly optimized since it has a great impact on the vehicle’s efficiency. It also defines the allocated budget for the Variable Buoyancy System (VBS) of the glider.
alex alcocer, Ahmed Al-Tawil, Moustafa Elkolali   +2 more
openaire   +2 more sources

INVESTIGATION ABOUT THE HYDRODYNAMIC COUPLING CHARACTERISTICS OF CONTRA-ROTATING AZIMUTH PROPULSOR

Brodogradnja, 2022
A numerical study is conducted to determine the hydrodynamic coupling characteristics of a contra-rotating azimuth propulsor (CRAP) in open-water conditions. The detached-eddy simulation (DES) method is utilized to run simulations. A grid verification is
Lixun Hou, Qingcai Wang
doaj   +1 more source

Design and Fully Coupled Dynamic Response Analysis of a New Floating Offshore Wind Platform

Journal of Marine Science and Engineering, 2023
Floating offshore wind platform (FOWP) has become the economically favored option for supporting wind turbines in deep waters. It is urgent to propose new concept designs for FOWPs that can be effectively deployed.
Yong Shen, Chuanyi Liu, Weichen Pan, Yajie Li, Xikun Wang   +4 more
doaj   +1 more source

Simulation study on hydrodynamic performance of podded propulsor for curise ship

Zhongguo Jianchuan Yanjiu, 2022
ObjectiveAiming at the mapping relationship between combined hydraulic components and performance, the hydrodynamic performance prediction method of a podded propulsor for cruise ship based on Reynolds-averaged Navier-Stokes (RANS) is studied ...
Yuanzhe NIE, Wu OUYANG, Gaoqiang LI, Cong ZHANG, Xincong ZHOU   +4 more
doaj   +1 more source

Modelling Swimming Hydrodynamics to Enhance Performance [PDF]

The Open Sports Sciences Journal, 2014
Swimming assessment is one of the most complex but outstanding and fascinating topics in biomechanics. Computational fluid dynamics (CFD) methodology is one of the different methods that have been applied in swimming research to observe and understand water movements around the human body and its application to improve ...
Marinho, D.A., Rouboa, Abel, Barbosa, Tiago M., Silva, A.J.   +3 more
openaire   +2 more sources

Research on Optimization Design of Fully Parameterized Pump-Jet Propulsion

Journal of Marine Science and Engineering, 2022
A pump-jet propulsion system is composed of rotor, stator, and duct. The stator has the front stator type and the rear stator type; the conduit also has the acceleration conduit and the deceleration conduit two forms.
Chunxiao Wu, Yu Lu, Shewen Liu, Zhiyuan Li, Zhuhao Gu, Wu Shao, Chuang Li   +6 more
doaj   +1 more source