Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Numerical investigation of flow separation control in an axial compressor cascade by plasma actuation

Authors
Amin Kadivar 1
Nima Amanifard 1
Hamed Mohaddes Deylami 2
1 University of Guilan, Faculty of engineering
2 University of Guilan, Faculty of engineering, East of Guilan
Abstract
Interest in plasma actuator as an active flow control has grown rapidly in the last years. Plasma actuator consists of a pair of electrodes that are separated by a dielectric material. Applying voltage to the electrodes, results in a body force that act on the flow field and is used in order to control it. Plasma actuator by imparting momentum is able to tangentially accelerate the flow field that can be used for flow control purpose such as boundary layer transition control, drag reduction, lift enhancement, and flow separation control. This work involves the documentation and control of leading-edge separation control that occurs on an axial compressor cascade at high angle of attack. To study the effect of control technique, a 2-D numerical investigation were performed in presence of varying plasma actuator voltage and location in different flow characteristics such as stream line, pressure and lift-to-drag ratio. The results show that plasma actuator reduce energy losses and a lift-to-drag ratio enhanced of up to 18% can be obtain by using plasma actuator at 15% of the blade chord length. The control effect obtain by the plasma actuator in low Reynolds number is more effective and Increasing the applied voltage improves the performance of the compressor cascade by increasing the induced body force.
Keywords
Plasma actuator
Flow separation
Axial compressor
Numerical investigation

Subjects

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Iranian Journal of Mechanical Engineering Transactions of ISME
Volume 20, Issue 4 - Serial Number 53
Fluid Mechanics and Heat Transfer
Winter 2019
Pages 182-209

  • Receive Date 04 August 2018
  • Revise Date 17 October 2018
  • Accept Date 12 March 2019