Paper Title:
Numerical Study on Plasma-Based Control of Flow over a Square Cylinder
  Abstract

Over the past decade, a lot of attention has been paid to plasma actuators because they are useful tools for flow control. Previous successes with plasma actuators include drag and noise reductions from a circular cylinder, one of representative bluff bodies, mainly through separation delay. However, to the best of authors’ knowledge, no attempt has been made to examine its capability to control square cylinder wake with fixed separation points. The purpose of this study is to numerically investigate whether or not the square cylinder wake can be controlled by means of plasma actuators. In particular, a linear plasma synthetic jet actuator is adopted and attached to the rear side of the cylinder. In this study, we use an immersed boundary method combined with an empirical plasma model for plasma-based flow control. The present method is second order accurate in time and space. Results show that the wake behind the square cylinder can be controlled effectively when the plasma-induced force is strong enough. With the plasma actuator on, the mean drag is reduced and the Karman vortex shedding is alleviated because the induced jet increases the base pressure and prevents the separating shear layers from interacting with each other.

  Info
Periodical
Chapter
Chapter 22: Metrology and Measurement
Edited by
Wu Fan
Pages
4351-4357
DOI
10.4028/www.scientific.net/AMM.110-116.4351
Citation
D. J. Kim, J. Kim, "Numerical Study on Plasma-Based Control of Flow over a Square Cylinder", Applied Mechanics and Materials, Vols. 110-116, pp. 4351-4357, 2012
Online since
October 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Zdzisław Gosiewski, Maciej Henzel
Abstract:Highly maneuverable aircraft has redundant electrohydraulic actuators that generate the forces to drive the aircraft control surfaces. Two...
61
Authors: Song Mei Yuan, Lu Tao Yan, Qiang Liu
Abstract:A novel nebulizer used in near dry machining systems for supplying cutting fluids and cooling air is presented. The nebulizer includes...
221
Authors: Shahab Amelian, Hamid R. Koofigar
Abstract:Piezoelectric materials are used in various applications as active vibration control, fault detection in structures and piezoelectric...
1237
Authors: Yan Hui Liu, Ping Tan, Fu Lin Zhou, Yong Feng Du, Wei Ming Yan
Abstract:Based on the configuration and mechanical characteristics of piezoelectric actuator, the bidirectional piezoelectric variable friction...
2977
Authors: Radoslaw Raczynski, Grzegorz Litak
Chapter 4: Modern Materials and Engineering Decisions for Manufacture
Abstract:We present the results on the Karman vortex creations on the two circular cylinders. Changing the inlet velocity we examine static and...
315