Drag Reduction in Flow Separation Using Plasma Actuator in a Cylinder Model

Harinaldi, Harinaldi and Budiarso, Budiarso and Julian, James and W.S, Andika (2015) Drag Reduction in Flow Separation Using Plasma Actuator in a Cylinder Model. In: Seminar Nasional Tahunan Teknik Mesin Indonesia XIV, 7-8 OKTOBER 2015, BANJARMASIN.

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Abstract

Plasma actuators are alternative active flow control devices that are currently developed and very promising. Their ability to modify fluid flow with the approach of ionic particles gives answer to the development of a more effective and efficient oriented flow control. The plasma actuator is one solution to the problems commonly arise in active flow control, which usually are difficult to be controlled and difficult to be installed. The output of the plasma actuators is the ion wind generated from the ionization process at standard atmospheric conditions as a result of the emission of freee lectrons during electrical jump phenomenon. Ion wind occurs due to the suction in the upstream actuators and causes a region of empty space, which is then filled by new fluid causing the fluid movement towards the downstream of the actuator. In producing the ion wind, plasma actuator is connected to a 11 kVp-p power supply by using an square type wave with an initial frequency of 9 kHz. The plasma actuators are placed in three configurations to get a prediction of the position of the point of separation i.e at an angle of 55o, 90o and 125o of the stagnation point. This study investigates the performance of the actuator in a separated flow which aims in reducing the drag effect of a cylindrical model. From the experiment, it is concluded that the use of plasma actuator can reduce drag up to 20% with the separation point at 90o angle of curvature. Keywords: Plasma Actuator, separated flow, ion wind, cylinder model

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Fakultas Teknik > Teknik Mesin
Depositing User: Mr Arief Mirathan - Eka Setya Wijaya
Date Deposited: 12 Jan 2016 03:25
Last Modified: 12 Jan 2016 03:25
URI: http://eprints.unlam.ac.id/id/eprint/608

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