• Vol 7, No 2 (2016)
  • Mechanical Engineering

The Effect of Plasma Actuator Placement on Drag Coefficient Reduction of Ahmed Body as an Aerodynamic Model

James Julian, Harinaldi , Budiarso , Revan Difitro, Parker Stefan

Corresponding email: harinald@eng.ui.ac.id


Published at : 29 Feb 2016
IJtech : IJtech Vol 7, No 2 (2016)
DOI : https://doi.org/10.14716/ijtech.v7i2.2994

Cite this article as:

Julian, J., Harinaldi, Budiarso, Difitro, R., Stefan, P., 2016. The Effect of Plasma Actuator Placement on Drag Coefficient Reduction of Ahmed Body as an Aerodynamic Model. International Journal of Technology. Volume 7(2), pp.306-313

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James Julian Fluid Mechanics Laboratory, Departement of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
Harinaldi Departement of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
Budiarso Departement of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
Revan Difitro Fluid Mechanics Laboratory, Departement of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
Parker Stefan Fluid Mechanics Laboratory, Departement of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
Email to Corresponding Author

Abstract
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In recent developments in the area of thermofluid technologies, active flow control has emerged as an interesting topic of research. One of the latest methods, which will be discussed in this paper, is the application of a plasma actuator. Plasma actuation is achieved by conducting a high-voltage electric current through an actuator device. Our research was specifically conducted to discover its effect on the reduction of the drag coefficient, with Ahmed Body the experimental object put inside a suction-flow wind tunnel with varying inputs of flow velocity. The plasma actuator device was run with an A.C. power supply and installed in three different placement configurations on the aerodynamic model to determine which most optimally affected the aerodynamic drag, while the drag coefficients were acquired via the use of a load cell installed as the harness for the aerodynamic model inside the tunnel. The results of the experiments include that the optimal configuration of the actuator placement was on the leading edge, the optimal wind flow velocity of the experiment, which was essential for the actuation to be observed, was at 1.7 m/s, and the resulting drag reduction percentage, as a result of induced flow, was 22% of the initial drag coefficient.

Active flow controls, Ahmed body, Drag reduction, Plasma actuator

References

Ahmed, S., Ramm, G., Faltin, G., 1984. Some Salient Features of the Time-averaged Ground Vehicle Wake. SAE Technical Paper 840300, doi: 10.4271/840300

Anderson, J.D., 2001. Fundamentals of Aerodynamics (3rd Ed). McGraw-Hill, Singapore

Badan Pengkajian dan Penerapan Teknologi, 2012. Indonesia Energy Outlook 2012. BPPT-Press, Jakarta

Gad-El-Hak, M., Pollard, A., Bonnet, J.P., 1998. Flow Control Fundamentals and Practices. From Lecture Notes in Physics, New Series m53: Monographs, Springer-Verlag, Berlin Heidelberg

Harinaldi., Budiarso., Julian, J., Andika, W.S., 2015. Drag Degradation in Flow Separation using Plasma Actuation in Cylinder Model. SNTTM XIV proceedings, Banjarmasin, Indonesia

Tarakka, R., 2012. Kajian Kontrol Aktif Aliran Separasi Aliran Turbulen pada Aerodinamika Bluff Body Model Kendaraan. PhD Disertation, Department of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia (in Bahasa)


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