Results 21 to 30 of about 32,156 (309)

Experimental Investigation on Jet Vector Deflection Jumping Phenomenon of Coanda Effect Nozzle

open access: yesApplied Sciences, 2022
The Coanda effect nozzle is a fluid thrust vectoring technology that uses the Coanda effect to control jet vector deflection. The jumping phenomenon often occurs in the process of controlling jet vector deflection.
Shaoqing Chi, Yunsong Gu
doaj   +1 more source

Unsteady Aerodynamics of Multiple Airfoils in Configuration [PDF]

open access: yes29th AIAA Applied Aerodynamics Conference, 2011
{"references": ["Seiler, P., Pant, A. and Hedrick, K. \"Analysis of bird formations\",\nProceedings of 41st IEEE Conference on Decision and Control, Las\nVegas, Nevada, USA, December 2002.", "Poore, S. O., Sanchez-Heiman, A. and Goslow, G. E. Jr., \"Aircraft\nupstroke and evolution of flapping flight\", Nature, Vol 387, pp 799-802,\nJune 1997 ...
Hossain Aziz, Rinku Mukherjee
openaire   +2 more sources

Characteristics of a nanosecond pulsed sliding discharge plasma actuator at low pressure

open access: yesAIP Advances, 2023
The behavior of a nanosecond pulsed sliding discharge plasma actuator with the ambient pressure from 27 to 101 kPa is experimentally investigated. The electric characteristics, discharge morphologies, and surface temperature distribution of the actuator ...
Qijie Sun   +5 more
doaj   +1 more source

Unsteady aerodynamic forces of a flapping wing [PDF]

open access: yesJournal of Experimental Biology, 2004
SUMMARYThe unsteady aerodynamic forces of a model fruit fly wing in flapping motion were investigated by numerically solving the Navier–Stokes equations. The flapping motion consisted of translation and rotation [the translation velocity (ut) varied according to the simple harmonic function (SHF), and the rotation was confined to a short period around ...
Jiang Hao, Wu, Mao, Sun
openaire   +2 more sources

Investigation of the Influence of Wake Field Characteristic Structures on Downstream Targets Using the POD Method

open access: yesAerospace, 2023
This research investigated the impact of complex low-speed wake flow structures on the aerodynamic characteristics of objects downstream. It employed the proper orthogonal decomposition (POD) method and the domain precursor simulation method to compare ...
Jiawei Fu   +4 more
doaj   +1 more source

Experimental and numerical investigation of flow over spiral grooved cylinders

open access: yesAdvances in Mechanical Engineering, 2022
This study experimentally and numerically investigates the performance of a circular cylinder with a spiral grooved surface in terms of reducing wind drag.
Jun Zhang   +4 more
doaj   +1 more source

Aerodynamic Sensitivity Analysis for a Wind Turbine Airfoil in an Air-Particle Two-Phase Flow

open access: yesApplied Sciences, 2019
In this paper, the Navier-Stokes equations coupled with a Lagrangian discrete phase model are described to simulate the air-particle flows over the S809 airfoil of the Phase VI blade, the NH6MW25 airfoil of a 6 MW wind turbine blade and the NACA0012 ...
Tongqing Guo   +4 more
doaj   +1 more source

Modeling of a Reduced Hybrid H2–Air Kinetic Scheme Integrating the Effect of Hypersonic Reactive Air with Supersonic Combustion

open access: yesEnergies, 2021
A hybrid H2–air kinetic scheme of 11 species and 15 reactions is developed, which is capable of simulating the high-temperature air reaction flows and H2–O2 combustion flows respectively or simultaneously.
Longfei Li, Jiangfeng Wang
doaj   +1 more source

Unsteady aerodynamics of nonslender delta wings [PDF]

open access: yesProgress in Aerospace Sciences, 2005
Unsteady aerodynamics of nonslender delta wings, covering topics of shear layer instabilities, structure of nonslender vortices, breakdown, maneuvering wings, and fluid/structure interactions, are reviewed in this paper. Vortical flows develop at very low angles of attack, and form close to the wing surface. This results in strong interactions with the
Gursul, I, Gordnier, R, Visbal, M
openaire   +2 more sources

Investigation on the Opposing Jet in the Hypersonic Rarefied Flow over a Vehicle Based on the DSMC Method

open access: yesActuators, 2022
In this paper, an opposing jet is applied to the space shuttle arc leading edge and the lifting body cone leading edge in the hypersonic condition of the rarefied flow field.
Yi Shen   +5 more
doaj   +1 more source

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