Results 271 to 280 of about 16,651,921 (298)
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Active Control of Unsteady Cavitating Flows in Turbomachinery
Volume 2A: Turbomachinery, 2019Abstract 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. +2 more
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Iterative design for active control of fluid flow
2001 European Control Conference (ECC), 2001Iterative 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. +3 more
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Simulation of Active Flow Control on a Stalled Airfoil
Flow, Turbulence and Combustion, 2003zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Spalart, Philippe +3 more
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Multiscale Active Flow Control
2007The 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 ...
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Active flow control applied to an airfoil
36th AIAA Aerospace Sciences Meeting and Exhibit, 1998Results of numerical simulations of active flow control applied to an airfoil using the Reynoldsaveraged Navier-Stokes equations are presented. The simulations are first compared with the poststall separation control experiments of Seifert et al.1'12 on a NACA0015 at 1.2 x 106 chord Reynolds number.
John Donovan, Linda Kral, Andrew Cary
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Active Flow Control Strategies and Tools for Turbulent Flows
2019In 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.
Bonnet, Jean-Paul, Qin, Ning
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Semantics of Control-Flow in UML 2.0 Activities
2004 IEEE Symposium on Visual Languages - Human Centric Computing, 2005The 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.
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Test-activity flow control for SOA execution test
The 16th North-East Asia Symposium on Nano, Information Technology and Reliability, 2011Electronic 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.
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Flow and Turbulence Characteristics of Separated Flows with Active Control
1998Abstract : 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 ...
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Review of Active Control of Circular Cylinder Flow
Ocean Engineering, 2022Yewei Huang, Donglai Gao, Wenli Chen
exaly