Three-dimensional simulation and evaluation of the hydrodynamic effects of stern wedges on the performance and stability of high-speed planing monohull craft

We present a computational study of flapping-wing aerodynamics of a calliope hummingbird ( Selasphorus calliope ) during fast forward flight. Three-dimensional wing kinematics were incorporated into the model by extracting time-dependent wing position from high-speed videos of the bird flying in a wind tunnel at 8.3 m s −1 . The advance ratio, i.e. the ratio between flight speed and average wingtip speed, is around one. An immersed-boundary method was used to simulate flow around the wings and bird body. The result shows that both downstroke and upstroke in a wingbeat cycle produce significant thrust for the bird to overcome drag on the body, and such thrust production comes at price of negative lift induced during upstroke. This feature might be shared with bats, while being distinct from insects and other birds, including closely related swifts.

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Three-dimensional simulation and experiment for turbulent combustion system in a high-speed Direct-Injection diesel engine

2008 Asia Simulation Conference - 7th International Conference on System Simulation and Scientific Computing ◽

10.1109/asc-icsc.2008.4675567 ◽

2008 ◽

Author(s):

Yongfeng Liu ◽

Youtong Zhang ◽

Qinghui Xiong

Keyword(s):

Diesel Engine ◽

Turbulent Combustion ◽

High Speed ◽

Direct Injection ◽

Three Dimensional ◽

Combustion System ◽

Direct Injection Diesel Engine ◽

Simulation And Experiment ◽

Dimensional Simulation

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Three dimensional simulation of high speed remote laser cutting of cathode for lithium-ion batteries

Journal of Laser Applications ◽

10.2351/1.4950908 ◽

2016 ◽

Vol 28 (3) ◽

pp. 032010 ◽

Cited By ~ 15

Author(s):

Dongkyoung Lee ◽

Rahul Patwa ◽

Hans Herfurth ◽

Jyotirmoy Mazumder

Keyword(s):

Lithium Ion Batteries ◽

Laser Cutting ◽

High Speed ◽

Three Dimensional ◽

Lithium Ion ◽

Dimensional Simulation

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Three Dimensional Simulation of Bore Flow Using SPH

29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 3 ◽

10.1115/omae2010-21090 ◽

2010 ◽

Cited By ~ 1

Author(s):

Huaxing Liu ◽

Soon Keat Tan ◽

Jing Li ◽

Xikun Wang

Keyword(s):

High Speed ◽

Stokes Equations ◽

Three Dimensional ◽

Smooth Particle Hydrodynamic ◽

Navier Stokes ◽

Initial Water ◽

Navier Stokes Equations ◽

Sph Model ◽

Complex Fluid ◽

Dimensional Simulation

Tidal bore is a fascinating and powerful hydraulic phenomenon. In this paper, the tidal bore’s process is studied using 3D Smooth Particle Hydrodynamic (SPH) model. The Lagrangian nature of SPH suits well to the modeling of the complex fluid flow phenomenon. In the SPH method, the Navier-Stokes equations are discretized with fluid particles in the Lagrangine sense. Boundary conditions, including both no slip wall and bottom wall, are implemented using dynamic boundary particles. Using SPH, the bore’s generation together with its traverse along the channel are presented, including the description of flow field and bore’s configuration. Different types of bores’ behavior are investigated. It is observed that there is a splash of water surge up the wall and the front of the bore becomes a breaker wave when the initial water column travels at high speed. The velocity field and bore heights at different locations are visualized and discussed as well.

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Full wave three-dimensional simulation of Maxwell's equations for the electrical characterization of high-speed interconnects

IEEE Transactions on Components Hybrids and Manufacturing Technology ◽

10.1109/33.56167 ◽

1990 ◽

Vol 13 (2) ◽

pp. 341-346 ◽

Cited By ~ 1

Author(s):

F.J. German ◽

R.W. Johnson

Keyword(s):

Maxwell’S Equations ◽

High Speed ◽

Maxwell's Equations ◽

Three Dimensional ◽

Electrical Characterization ◽

Full Wave ◽

High Speed Interconnects ◽

Dimensional Simulation

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Virtual Reality Simulation of High Firing Rate Weapon

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.711.608 ◽

2013 ◽

Vol 711 ◽

pp. 608-612

Author(s):

Jie Xing ◽

Yin Xian Duo

Keyword(s):

Evaluation System ◽

High Speed ◽

Simulation Analysis ◽

Three Dimensional ◽

Damage Effect ◽

Weapon System ◽

Technical Parameters ◽

Damage Probability ◽

Dimensional Simulation ◽

High Firing

In order to analyze the typical target damage efficiency of high speed aerial gatling-gun in different tactical environments, an Efficiency Evaluation System of Gatling-Gun based on STAGE has been researched and developed. It can get the damage probability of the target by setting the combat environment, the technical parameters of the weapon system, the operating parameters of the typical target and other technical indexes, and reconstruct the attack process through three-dimensional simulation. The technical parameters of the weapon system can be modified so as to achieve ideal damage effect of the typical target.It can be a reference for the configuration of the weapon platforms as well as its next research and develop goals.The reliability of the simulation model has already been verified through simulation analysis of intercepting flying targets of 0-2 Mach taken in a variety of radio frequencies.

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