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http://dx.doi.org/10.12989/aas.2015.2.1.077

A computational approach to the simulation of controlled flows by synthetic jets actuators  

Ferlauto, Michele (Department of Mechanical and Aerospace Engineering, Politenico di Torino)
Marsilio, Roberto (Department of Mechanical and Aerospace Engineering, Politenico di Torino)
Publication Information
Advances in aircraft and spacecraft science / v.2, no.1, 2015 , pp. 77-94 More about this Journal
Abstract
The paper focuses on the integration of a non-linear one-dimensional model of Synthetic Jet (SJ) actuator in a well-assessed numerical simulation method for turbulent compressible flows. The computational approach is intended to the implementation of a numerical tool suited for flow control simulations with affordable CPU resources. A strong compromise is sought between the use of boundary conditions or zero-dimensional models and the full simulation of the actuator cavity, in view of long-term simulation with multiple synthetic jet actuators. The model is integrated in a multi-domain numerical procedure where the controlled flow field is simulated by a standard CFD method for compressible RANS equations, while flow inside the actuator is reduced to a one-dimensional duct flow with a moving piston. The non-linear matching between the two systems, which ensures conservation of the mass, momentum and energy is explained. The numerical method is successfully tested against three typical test cases: the jet in quiescent air, the SJ in cross flow and the flow control on the NACA0015 airfoil.
Keywords
synthetic jet; active flow control; virtual shaping;
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