Method of high speed flow field influence and restrain on laser communication

2013 ◽  
Author(s):  
Li-xin Meng ◽  
Chun-hui Wang ◽  
Cun-zhu Qian ◽  
Shuo Wang ◽  
Li-zhong Zhang
Keyword(s):  
Flow Field ◽  
High Speed ◽  
Laser Communication ◽  
High Speed Flow ◽  
Speed Flow ◽  
Field Influence

scholarly journals Studies on the Visualization of High Speed Flow Field Using MRI with EPI method

1998 ◽  
Vol 118 (7-8) ◽  
pp. 851-859
Author(s):  
Hiroyuki Kikuchi ◽  
Noriyuki Okinaka ◽  
Yoshiaki Aoki ◽  
Naoyuki Kayukawa
Keyword(s):  
Flow Field ◽  
High Speed ◽  
High Speed Flow ◽  
Speed Flow

scholarly journals A Study on the Air Cavity under a Stepped Planing Hull

2019 ◽  
Vol 7 (12) ◽  
pp. 468 ◽  
Author(s):  
Dongmei Yang ◽  
Zhiyuan Sun ◽  
Yi Jiang ◽  
Zeyang Gao
Keyword(s):  
Flow Field ◽  
Pressure Distribution ◽  
High Speed ◽  
General Procedure ◽  
Shape Evolution ◽  
High Speed Flow ◽  
Air Cavity ◽  
Speed Flow ◽  
Wetted Area ◽  
Volume Method

Based on the FVM (finite volume method) numerical method, the flow field around the stepped planing hull in Taunton series was simulated. According to the general procedure of numerical uncertainty analysis, the numerical uncertainty in the high-speed flow field simulation of the stepped planing hull was discussed. Combined with the wave-making characteristics of the hull, the generation mechanism, shape evolution of air cavity, and the pressure distribution characteristics under the influence of the cavity, focuses on the variation of the flow around the stepped planing when the hull is in the triangle planing stage. Numerical results suggest that, as the air cavity enlarges, the cover rate of the air cavity can rise up to 77.8% of the whole wetted surface of the planing hull bottom. While, in the triangle planing stage, there is additional wetting at the aft bilge, which leads to the decrease of the air cavity rate and the increase of the wetted area. At the same time, the pressure distribution concentrates to the center of gravity.

High Speed Transient Flow in Manifolds

2019 ◽  
Author(s):  
Nicholas Findanis
Keyword(s):  
Aspect Ratio ◽  
Flow Field ◽  
High Speed ◽  
Transient Flow ◽  
Flow Distribution ◽  
Ideal Gas ◽  
Working Fluid ◽  
High Speed Flow ◽  
Speed Flow ◽  
High Speed Flows

Abstract Flows in manifolds is a ubiquitous and important area to implement flow improvements. In almost all applications of industrial pipe flows, there is the requirement to distribute the flow of fluid. There is a deficiency of studies in the area of flow distribution in manifolds with high speed flows. The present work is aimed at providing a further understanding of transient high speed flow distribution in manifolds. The different manifold configurations were analysed computationally. A comparison was focused between through the different aspect ratio manifolds. The velocity field and the eddy viscosity parameters where compared between the simulated flow models to ascertain the key features in the distributed flow field and especially, to determine the areas that showed greater flow recirculation or flow eddies and the separated flow regions. The CFD study was conducted as a high speed flow/ compressible flow regime accounting for the ideal gas dynamic model being air as the working fluid. The study showed that the transient behaviour of flow field can significantly affect distribution of the flow depending on the aspect ratio and number of branches on the manifold. Efficiency gains can be achieved in high speed flows that can be of benefit in industrial and other engineered flow applications.

Numerical Simulation of IR Seeker High-Speed Flow Field and Its Influence on Ray Transmission

2012 ◽  
Vol 32 (8) ◽  
pp. 0801002
Author(s):  
江涛 Jiang Tao ◽  
丁明松 Ding Mingsong ◽  
高铁锁 Gao Tiesuo ◽  
董维中 Dong Weizhong ◽  
方艺忠 Fang Yizhong ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
High Speed ◽  
High Speed Flow ◽  
Speed Flow

Studies on the Measuring Method of Number Density of Ions in the High Speed Flow Field

2009 ◽  
Vol 37 (11) ◽  
pp. 2257-2260 ◽  
Author(s):  
Mindi Bai ◽  
Bo Yang ◽  
Xiaohong Xue ◽  
Dong Liu ◽  
Jian Sun
Keyword(s):  
Flow Field ◽  
High Speed ◽  
Measuring Method ◽  
Number Density ◽  
High Speed Flow ◽  
Speed Flow

scholarly journals Visualization of high speed flow field by vapor-screen method.

1986 ◽  
Vol 6 (22) ◽  
pp. 279-282
Author(s):  
Toshiaki SETOGUCHI ◽  
Kenji KANEKO ◽  
Toshihiro NAKANO ◽  
Kazuyasu MATSUO ◽  
Shigetoshi KAWAGOE ◽  
...  
Keyword(s):  
Flow Field ◽  
High Speed ◽  
High Speed Flow ◽  
Screen Method ◽  
Speed Flow
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