Results 21 to 30 of about 11,503,776 (284)

Numerical simulation for hydrodynamic performance of marine current turbine based on overset grid

open access: yesZhongguo Jianchuan Yanjiu, 2018
[Objectives] In order to study the unsteady hydrodynamic performance of turbines under changing current conditions,[Method] this paper uses the Dynamic Fluid Body Interaction(DFBI) method based on an overset grid to simulate the unsteady hydrodynamic ...
LIU Yao, CAI Weijun, WANG Mingzhou
doaj   +1 more source

CFD/RBD Numerical Simulation Research on the Process of Buried Aviation Weapon Launch [PDF]

open access: yesHangkong bingqi, 2021
Because of its special configuration, the flying wing layout aircraft shows a big difference in performance from conventional aircraft. Embedded weapon cabin can help fighters improve stealth performance, but the door interference and the flow under the ...
Jin Chenhui, Huai Yang, Chen Xin, Wang Gang
doaj   +1 more source

Numerical Investigation of an Unsteady Blade Surface Blowing Method to Reduce Rotor Blade-Vortex Interaction Noise

open access: yesInternational Journal of Aerospace Engineering, 2022
This paper presents a numerical investigation of unsteady surface blowing using periodic variations of jet velocity with azimuthal angle to reduce helicopter rotor blade-vortex interaction (BVI) noise.
Yan Sun, Guohua Xu, Yongjie Shi
doaj   +1 more source

Moving computational multi-domain method for modelling the flow interaction of multiple moving objects

open access: yesAdvances in Aerodynamics, 2022
This study proposes a method for modelling the flow interaction of multiple moving objects where the flow field variables are communicated between multiple separate moving computational domains.
Momoha Nishimura   +4 more
doaj   +1 more source

Breast Tumour Identification based on Chimera Overset Grid with Spline Interpolation in Forward-Backward Time-Stepping

open access: yesASM Science Journal, 2021
Active microwave imaging (MI) technique has been recently recommended as a new technology for early detection of malignant breast tumours. Finite-difference Time-domain (FDTD) method is an effective numerical tool for computational electrodynamics ...
Bong Siaw Wee   +2 more
doaj   +1 more source

A user`s guide for BREAKUP: A computer code for parallelizing the overset grid approach [PDF]

open access: yes, 1998
In this user`s guide, details for running BREAKUP are discussed. BREAKUP allows the widely used overset grid method to be run in a parallel computer environment to achieve faster run times for computational field simulations over complex geometries.
Barnette, D. W.
core   +1 more source

Motion Prediction of Catamaran with a Semisubmersible Bow in Wave

open access: yesPolish Maritime Research, 2016
Compared with standard vessels, a slender catamaran with a semi-submerged bow (SSB) demonstrates superior seakeeping performance. To predict the motion of an SSB catamaran, computational fluid dynamics methods are adopted in this study and results are ...
Sun Hanbing   +5 more
doaj   +1 more source

CFD study to predict the effect of a passing ship on moored ships in a confined waterway

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2023
This study aims to present a practical practice to obtain a reliable numerical solution based on an Unsteady Reynolds Averaged Navier-Stokes (URANS) Computational Fluid Dynamics (CFD) to estimate the forces acting on moored ships during a passage of a ...
Chang Seop Kwon, Seong Mo Yeon
doaj   +1 more source

Performance Characteristics of a 4 × 6 Oil-Free Twin-Screw Compressor

open access: yesEnergies, 2017
The screw compressor in the early stage of development is generally known as the oil-injection type. However, escalating environmental problems and advances in electronic components have spurred continuous R & D to minimize the oil content in ...
Sun-Seok Byeon   +2 more
doaj   +1 more source

An Integrated Dynamic Model and Optimized Fuzzy Controller for Path Tracking of Deep-Sea Mining Vehicle

open access: yesJournal of Marine Science and Engineering, 2021
The capability of path tracking largely determines the operational efficiency of deep-sea mining vehicles. In this paper, the relationships of vehicle–sediment mechanical interaction were obtained by sinkage and shear tests.
Yu Dai, Cong Xue, Qiao Su
doaj   +1 more source

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