Results 211 to 220 of about 14,585,722 (247)

Active Control of Unsteady Cavitating Flows in Turbomachinery

Volume 2A: Turbomachinery, 2019
Abstract A preliminary 2D numerical investigation of the active control of unsteady cavitation by means of one single synthetic jet actuator (SJA) is presented. The SJA has been applied to hinder the intrinsic instabilities of a cloud cavitating flow of water around a NACA 0015 hydrofoil with an angle of attack of 8° and ambient ...
de Giorgi M. G., Ficarella A., Fontanarosa D.   +2 more
openaire   +1 more source

Iterative design for active control of fluid flow

2001 European Control Conference (ECC), 2001
Iterative controller design for planar Poiseuille flow by model unfalsification and controller redesign is the topic of the paper. The main contribution is to show that model-unfalsification-based iterative design can be useful in flow control problems.
Veres, S.M., Baramov, L., Tutty, O.R., Rogers, E.   +3 more
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Multiscale Active Flow Control

2007
The physics of the multiscale patterns of flows is introduced in the first part: it is the foundation for analysis of the control of flow. Then a careful distinction is made between control as a passive mean for improving the properties of natural flows relevant to a given application, and control as a robust active tool to optimize a cost function ...
openaire   +1 more source

Active acoustic and flow control for aeropropulsion

39th Aerospace Sciences Meeting and Exhibit, 2001
A series of experiments was described in which flow control was used to improve the performance of aeropropulsion systems. In the first experiment, trailing edge blowing (TEB) in upstream stator is used to reduce wake distortion seen by the downstream rotor and the associated tonal noise. The experiment, which was conducted in an anechoic chamber using
Wing Ng, Ricardo Burdisso
openaire   +1 more source

Active Flow Control Strategies and Tools for Turbulent Flows

2019
In this chapter we present considerations on the impact of the turbulence characteristics of most flows of industrial interest on the flow control interpretations or strategies. In the second part we will give an overview of the CFD approaches, including actuator integration methods.
Jean-Paul Bonnet, Ning Qin
openaire   +1 more source

Semantics of Control-Flow in UML 2.0 Activities

2004 IEEE Symposium on Visual Languages - Human Centric Computing, 2005
The recent major revision of the UML has introduced significant changes and additions. In particular, the metamodel portion underlying Activity Diagrams has been completely reengineered, with Activity being the central concept, the successor of ActivityGraph in UML 1.5.
openaire   +1 more source

Test-activity flow control for SOA execution test

The 16th North-East Asia Symposium on Nano, Information Technology and Reliability, 2011
Electronic collaboration over the Internet between business partners appear to be converging toward well-established types of message exchange patterns that involve both user-defined standards and infrastructure standards. At the same time, the notion of event is increasingly promoted for asynchronous communication and coordination in SOA systems.
openaire   +2 more sources

Flow and Turbulence Characteristics of Separated Flows with Active Control

1998
Abstract : Experiments have been carried out in plane and axisymmetric sudden-expansion flows to quantify velocity characteristics in isothermal and reacting flows and temperature and emission characteristics in the reacting flows, to establish flammability and stability limits, to determine the acoustic characteristics and their importance to large ...
openaire   +1 more source

Review of active control of circular cylinder flow

Ocean Engineering, 2022
Yewei Huang, Donglai GAO, Wenli Chen
exaly  

Bipolar Redox-Active Molecules in Non-Aqueous Organic Redox Flow Batteries: Status and Challenges

ChemElectroChem, 2021
Shelley D. Minteer
exaly