Results 11 to 20 of about 8,973,018 (251)

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
Pates S, Xue Y.
europepmc   +15 more sources

Optimal Design and Performance Analysis of a Hybrid System Combining a Semi-Submersible Wind Platform and Point Absorbers

Journal of Marine Science and Engineering, 2023
Integrating point absorber wave energy converters (PAWECs) and an offshore floating wind platform provide a cost-effective way of joint wind and wave energy exploitation. However, the coupled dynamics of the complicated hybrid system and its influence on
Binzhen Zhou, Jianjian Hu, Qi Zhang, Lei Wang, Fengmei Jing, Maurizio Collu   +5 more
doaj   +1 more source

Multi-Parameter Optimization Analysis of Hydrodynamic Performance for Rim-Driven Thruster

Energies, 2023
The efficiency of rim-driven thrusters (RDT) has always been the focus of attention in the context of energy conservation and environmental protection.
Yuanzhe Nie, Wu Ouyang, Zhuo Zhang, Gaoqiang Li, Ruicong Zheng   +4 more
doaj   +1 more source

Hydrodynamic performance of small unmanned catamaran based on STAR-CCM+

Zhongguo Jianchuan Yanjiu, 2023
ObjectivesThis study aims to carry out systematic research on the hydrodynamic performance of a small unmanned catamaran. MethodsBased on STAR-CCM+ numerical simulation software, the hydrodynamic performance of a small unmanned catamaran in a hydrostatic
Yuting CHEN, Shihua XU, Jiahao SHI, Xu LIU, Guoxiang HOU   +4 more
doaj   +1 more source

Asymmetrical Oscillating Morphology Hydrodynamic Performance of a Novel Bionic Pectoral Fin

Journal of Marine Science and Engineering, 2022
This research proposes a novel bionic pectoral fin and experimentally studied the effects of the oscillation parameters on the hydrodynamic performance of a bionic experimental prototype. Inspired by manta rays, the bionic pectoral fin was simplified and
Cheng Xing, Yong Cao, Yonghui Cao, Guang Pan, Qiaogao Huang   +4 more
doaj   +1 more source

Optimal Matching of Flapping Hydrofoil Propulsion Performance Considering Interaction Effects of Motion Parameters

Journal of Marine Science and Engineering, 2022
In order to maximize the propulsion efficiency of flapping hydrofoil, a new method is proposed in this paper. The effects of heave amplitude, pitch amplitude, and the phase difference between heave and surge on propulsion performance were analyzed by ...
Zixuan Wang, Xin Chang, Lixun Hou, Nan Gao, Weiguan Chen, Yuanxin Tian   +5 more
doaj   +1 more source

Validation of prediction technology of ship propulsion hydrodynamic performance in LOGOS software package

, 2022
Object and purpose of research. The objects of research are models of propeller and impeller of a water jet. The purpose of the work is to validate the new calculation module LOGOS of domestic software complex for engineering analysis and the technology
Kuznetsova A.V., Taranov A.E.
core   +1 more source

Numerical Analysis of Tip Vortex and Cavitation of Elliptic Hydrofoil with NACA 662-415 Cross Section

한국해양공학회지, 2018
This paper provides quantification of the effects of the turbulence model and grid refinement on the analysis of tip vortex flows by using the RANS(Reynolds averaged Navier-Stokes) method. Numerical simulations of the tip vortex flows of the NACA 662-415
Il-Ryong Park, Je-in Kim, Han-Sin Seol, Ki-Sup Kim, Jong-Woo Ahn   +4 more
doaj   +1 more source

Effect of vane hub cap on hydrodynamic, cavitation and acoustic performance of propulsion system

, 2022
Object and purpose of research. Effects of the vane hub cap are investigated regarding hydrodynamic, cavitation and acoustic performance of a ducted propeller as propulsion system. Subject matter and methods. In the work process two versions of the vane
Koval А.A., Marinich N.V., Bagrintsev V.V.   +2 more
core   +1 more source

Thermohydraulic performance of thermal system integrated with twisted turbulator inserts using ternary hybrid nanofluids

Nanotechnology Reviews, 2023
Mono, hybrid, and ternary nanofluids were tested inside the plain and twisted-tape pipes using k-omega shear stress transport turbulence models. The Reynolds number was 5,000 ≤ Re ≤ 15,000, and thermophysical properties were calculated under the ...
Alawi Omer A., Kamar Haslinda Mohamed, Falah Mayadah W., Hussein Omar A., Abdelrazek Ali H., Ahmed Waqar, Eltaweel Mahmoud, Homod Raad Z., Al-Ansari Nadhir, Yaseen Zaher Mundher   +9 more
doaj   +1 more source