Study on Characteristics of an AC Sliding Discharge Plasma Actuator Operating at Different Pressures
Actuators, 2023 Dielectric barrier discharge (DBD) has been one of the most promising techniques for flow control, but the practical application needs a large plasma surface.
Qijie Sun +5 more
doaj +1 more source
Flow separation control design with experimental validation [PDF]
arXiv, 2023 Flow control aims at modifying a natural flow state to reach an other flow state considered as advantageous. In this paper, active feedback flow separation control is investigated with two different closed-loop control strategies, involving a reference signal tracking architecture.
arxiv
Bubble clustering in turbulent boundary layer on a moving wall utilizing belt-driven system
Journal of Fluid Science and TechnologyFor simulating the behavior of air bubbles injected into the turbulent boundary layer developed beneath the bottom of a ship, we propose a novel experimental system for a different driving force on flow from the bulk pressure gradient.
Yasufumi HORIMOTO +4 more
doaj +1 more source
Longitudinal flight dynamics modeling and a flight stability analysis of a monocopter
AIP 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 Investigation on Jet Vector Deflection Jumping Phenomenon of Coanda Effect Nozzle
Applied 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
Optimization flow control—I: basic algorithm and convergence
TNET, 1999 We propose an optimization approach to flow control where the objective is to maximize the aggregate source utility over their transmission rates. We view network links and sources as processors of a distributed computation system to solve the dual ...
S. Low, D. Lapsley
semanticscholar +1 more source
Pseudo-Leidenfrost phenomenon of low surface tension droplet induced by external aerodynamic field
AIP Advances, 2023 Droplet regulation has significant application potential in many fields; however, conventional controlling methods make it difficult to effectively control low surface tension droplets.
Jinzhu Xu +4 more
doaj +1 more source
Reinforcement-learning-based control of convectively-unstable flows [PDF]
, 2022 This work reports the application of a model-free deep-reinforcement-learning-based (DRL) flow control strategy to suppress perturbations evolving in the 1-D linearised Kuramoto-Sivashinsky (KS) equation and 2-D boundary layer flows. The former is commonly used to model the disturbance developing in flat-plate boundary layer flows.
arxiv +1 more source
AerospaceA passive flow control technique in the form of microfiber coatings with a diverging pillar cross-section area was applied to the wing suction surface of a small tailless unmanned aerial vehicle (UAV). The coatings are inspired from ‘gecko feet’ surfaces,
Dioser Santos +3 more
doaj +1 more source
Aerodynamic Sensitivity Analysis for a Wind Turbine Airfoil in an Air-Particle Two-Phase Flow
Applied 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