In this paper, the bionic membrane structure is introduced to improve aerodynamic performance of nano rotor at low Reynolds number. The characteristics made hyperelastic material as blades are studied. Firstly, based on constitutive model, a finite element model established and compared with results modal test verify accuracy model. Then computational fluid dynamics which combined under hoverin...

The comparisons of two typical fluidic thrust vectoring exhaust nozzles including two-dimensional(2-D) nozzle and axisymmetric nozzle on aerodynamic characteristics was presented by numerical simulation. The results show: the thrust vector angles increased with the increasing secondary flow but decreased with the nozzle pressure ratio (NPR) increasing. With the same secondary flow and NPR, the ...

The aerodynamic and acoustic phenomena involved in the production of fricative consonants are far from being completely understood. The overall Ievel and spectral characteristics of the radiated sound pressure are known to primarily depend on the aerodynamic state of the vocal tract, i.e. the pseudo-static pressure drop across the main oral constriction and the cross-sectional area of the const...

On the basis of the traditional structure of noise barrier, this paper seeks aerodynamic load to reduce the variation of maximum surface configuration (porous structure). Using the numerical simulation method, this paper builds a three-dimensional numerical model of deloading type noise barriers and trains. The large fluid calculation software, Fluent, is adopted to conduct simulation calculati...

ASWING is a program for the prediction of static and quasi-static loads and deformations of aircraft with flexible high aspect ratio surfaces and fuselage beams. The key features of the overall structural/aerodynamic model are sketched in Figure 1. A fully nonlinear Bernoulli-Euler beam representation is used for all the surface and fuselage structures, and an enhanced lifting-line representati...

This work aimed to prepare a nanoemulsion preparation containing budesonide and assess its aerodynamic behavior in comparison with suspension of budesonide. In-vitro aerodynamic performance of the corresponding micellar solution (ie. nanoemulsion preparation without oil) was investigated too. Nanoemulsions of almond oil containing budesonide, as a hydrophobic model drug molecule, were prepared ...

The working mechanisms of surface dielectric barrier discharge (SDBD) plasma actuators foreseen as aerodynamic control devices is investigated experimentally on a common platform, referred to as the NATO-AVT-RTO-190 test case. A better understanding of the working principle and characteristics of SDBD paves the way for more efficient and safe use of plasma actuators in aerodynamic applications....

Soccer balls are typically constructed from 32 pentagonal and hexagonal panels. Recently, however, newer balls named Cafusa, Teamgeist 2, and Jabulani were respectively produced from 32, 14, and 8 panels with shapes and designs dramatically different from those of conventional balls. The newest type of ball, named Brazuca, was produced from six panels and will be used in the 2014 FIFA World Cup...