Results 11 to 20 of about 74,293 (256)

A New Loss Generation Body Force Model for Fan/Compressor Blade Rows: An Artificial-Neural-Network Based Methodology

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2021
Body force models of fans and compressors are widely employed for predicting performance due to the reduction in computational cost associated with their use, particularly in nonuniform inflows.
Syamak Pazireh, Jeffrey J. Defoe
doaj   +1 more source

Marking function of Stokes number on airfoils’ aerodynamic penalties in a gas–solid flow

open access: yesIET Renewable Power Generation, 2021
This paper aims to employ the Stokes number to mark aerodynamic penalties of airfoils caused by particles, which is crucial to implement their scaling experiments in a gas‐solid flow.
Junjun Jin   +4 more
doaj   +1 more source

Longitudinal flight dynamics modeling and a flight stability analysis of a monocopter

open access: yesAIP Advances, 2022
A monocopter, which is a biology-inspired aircraft based on the samara, has been proved to have passive flight stability. However, due to the asymmetry of its configurations and the constant rotation during flight, its flight dynamics equation is complex.
Shengxiang Tong   +3 more
doaj   +1 more source

Experimental analysis of the pressure–velocity correlations of external unsteady flow over rocket launchers [PDF]

open access: yes, 2013
Based on simultaneous wall pressure and velocity measurements, the aerodynamic load of a launcher body model is investigated. Two different configurations are considered in order to study the influence of geometrical artifacts on the after body flow and ...
DRUAULT, Philippe   +7 more
core   +1 more source

Active flutter suppression for a flexible wing model with trailing-edge circulation control via reinforcement learning

open access: yesAIP Advances, 2023
Previous attempts at active flutter suppression have been based on driving the deflection of multiple pairs of discontinuous mechanical control surfaces.
Zhen Chen   +4 more
doaj   +1 more source

Investigation of thrust vector angle control law based on micro-turbojet engine

open access: yesAIP Advances, 2022
The fluid thrust vectoring nozzle has a fixed profile, few moving parts, and lightweight structure, providing effective flight control for high maneuvering aircraft. The nonlinear control law of the jet deflection angle is one of the critical problems of
Shaoqing Chi   +3 more
doaj   +1 more source

Investigation of active flow control of jet deflection rate in passive secondary flow thrust vectoring nozzle

open access: yesAIP Advances, 2022
Jet deflection rate is an essential index in the research of thrust vector control technology. The vectoring deflection of the jet is an unsteady flow.
Shaoqing Chi   +3 more
doaj   +1 more source

The Influence of Gas Models on Numerical Simulations of Cryogenic Flow

open access: yesAerospace, 2023
At cryogenic temperatures, gases exhibit significant deviations from ideal behaviour, and the commonly employed gas model may inadequately represent the thermodynamic properties of cryogenic gases, subsequently impacting numerical simulations using ...
Ruifan Hu   +3 more
doaj   +1 more source

An Unsteady Pressure Probe for the Measurement of Flow Unsteadiness in Tidal Channels [PDF]

open access: yesIEEE Journal of Oceanic Engineering, 2020
IEEE An unsteady five-hole probe has been developed for the measurement of turbulent flow in tidal channels. Such measurements are vital for accurate prediction of unsteady loads on tidal turbines. Existing field-based velocimeters are either unable to capture the required range of frequencies or are too expensive to profile the variation of turbulence
Young, Anna M.   +3 more
openaire   +4 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

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