Results 21 to 30 of about 991,484 (340)

Reynolds number calculation and applications for curved wall jets [PDF]

INCAS Bulletin, 2014
The current paper refers to the preliminary estimation of the Reynolds number for curved wall jets. This, in turn, can be a useful tool for controlling the boundary layer mesh size near a generic curved wall which is wetted by a thin, attached jet.
Valeriu DRAGAN
doaj   +1 more source

Reynolds-number dependence of turbulence enhancement on collision growth [PDF]

Atmospheric Chemistry and Physics, 2016
This study investigates the Reynolds-number dependence of turbulence enhancement on the collision growth of cloud droplets. The Onishi turbulent coagulation kernel proposed in Onishi et al.
R. Onishi, A. Seifert
doaj   +1 more source

Analysis of low Reynolds number flow past Gurney flap [PDF]

INCAS Bulletin, 2010
The trailing edge region of a single element wing fitted with Gurney flap at low Reynoldsnumbers has been studied.The complex flow separation phenomena on airfoils with Gurney flap at low Reynolds numbershave some specific features as the separation on ...
Ion MĂLĂEL, Horia DUMITRESCU
doaj   +1 more source

Plunging Airfoil: Reynolds Number and Angle of Attack Effects

Aerospace, 2021
Natural flight has consistently been the wellspring of many creative minds, yet recreating the propulsive systems of natural flyers is quite hard and challenging.
Emanuel A. R. Camacho, Fernando M. S. P. Neves, André R. R. Silva, Jorge M. M. Barata   +3 more
doaj   +1 more source

Geometrically Nonlinear Static Analysis of High-Aspect-Ratio Truss-Braced Wing

Engineering Proceedings
Truss-braced wings (TBWs) feature higher aspect ratios with a lighter weight and lower bending moment than conventional wings. These wings show significant potential for performance improvements in terms of fuel efficiency.
Yanxin Huang, Jinchi Chen, Qingyuan Ma
doaj   +1 more source

Low Reynolds Number Rotor Blade Aerodynamic Analysis

MATEC Web of Conferences, 2019
Maintaining a steady hover flight in a rotorcraft usually requires high energy input. The aim of the paper is to prove that it is possible to vastly reduce energy use in a rotorcraft by reducing the disc loading.
Tulwin Tytus
doaj   +1 more source

Stochastic low Reynolds number swimmers [PDF]

Journal of Physics: Condensed Matter, 2009
As technological advances allow us to fabricate smaller autonomous self-propelled devices, it is clear that at some point directed propulsion could not come from pre-specified deterministic periodic deformation of the swimmer's body and we need to develop strategies to extract a net directed motion from a series of random transitions in the ...
Golestanian, R. ; https://orcid.org/0000-0002-3149-4002, Ajdari, A.   +1 more
openaire   +5 more sources

Design of a control system for a 1.5 m diameter coaxial rigid rotor model

Hangkong gongcheng jinzhan
As a key equipment for rotor wind tunnel testing, the design specifications and control accuracy of the rotor test bench directly determine the testing accuracy and effectiveness of the rotor wind tunnel testing.
LIU Shi, SHAO Tianshuang, LIU Xiangnan
doaj   +1 more source

Scaling of the streamwise velocity component in turbulent pipe flow [PDF]

, 2004
Statistics of the streamwise velocity component in fully developed pipe flow are examined for Reynolds numbers in the range 5.5 x 10^4 ≤ ReD ≤ 5.7 x 10^6. Probability density functions and their moments (up to sixth order) are presented and their scaling
Jiang, W., McKeon, B. J., Morrison, J. F., Smits, A. J.   +3 more
core   +1 more source

Rotor blade design and dynamic characteristics analysis of unmanned helicopter

Hangkong gongcheng jinzhan
The widespread application of composite materials in blades also makes the force and stiffness characteristics of blades more complex than traditional blades.
GAO Hongbo
doaj   +1 more source