Numerical simulation of fluidic actuators for flow control applications

Veer N. Vatsa, Mehti Koklu, Israel L. Wygnanski, Ehab Fares

Research output: Chapter in Book/Report/Conference proceedingConference contribution

52 Scopus citations

Abstract

Active flow control technology is finding increasing use in aerospace applications to control flow separation and improve aerodynamic performance. In this paper we examine the characteristics of a class of fluidic actuators that are being considered for active flow control applications for a variety of practical problems. Based on recent experimental work, such actuators have been found to be more efficient for controlling flow separation in terms of mass flow requirements compared to constant blowing and suction or even synthetic jet actuators. The fluidic actuators produce spanwise oscillating jets, and therefore are also known as sweeping jets. The frequency and spanwise sweeping extent depend on the geometric parameters and mass flow rate entering the actuators through the inlet section. The flow physics associated with these actuators is quite complex and not fully understood at this time. The unsteady flow generated by such actuators is simulated using the lattice Boltzmann based solver PowerFLOW®. Computed mean and standard deviation of velocity profiles generated by a family of fluidic actuators in quiescent air are compared with experimental data. Simulated results replicate the experimentally observed trends with parametric variation of geometry and inflow conditions.

Original languageEnglish (US)
Title of host publication6th AIAA Flow Control Conference 2012
StatePublished - Dec 1 2012
Externally publishedYes
Event6th AIAA Flow Control Conference 2012 - New Orleans, LA, United States
Duration: Jun 25 2012Jun 28 2012

Publication series

Name6th AIAA Flow Control Conference 2012

Other

Other6th AIAA Flow Control Conference 2012
CountryUnited States
CityNew Orleans, LA
Period6/25/126/28/12

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Aerospace Engineering
  • Control and Systems Engineering

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  • Cite this

    Vatsa, V. N., Koklu, M., Wygnanski, I. L., & Fares, E. (2012). Numerical simulation of fluidic actuators for flow control applications. In 6th AIAA Flow Control Conference 2012 (6th AIAA Flow Control Conference 2012).