MODIFICATION OF A PLASMA ACTUATOR MODEL FOR INDUCED WALL-JET SIMULATION

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EBRAHIMI A.; OMIDI J.

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Journal: MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING) Year:2018 | Volume:34-3 | Issue:2 Page(s): 11-17

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Title

MODIFICATION OF A PLASMA ACTUATOR MODEL FOR INDUCED WALL-JET SIMULATION

Author(s)

EBRAHIMI A. | OMIDI J. | Issue Writer Certificate

Keywords

Electrostatic model modicationQ1

DBD plasma actuatorQ2

uidow controlQ1

Abstract

Recently, active ow control by dielectric barrier discharge (DBD) plasma actuators has been increased. These actuators are known as more ecient, low-cost, without the need of moving parts, low power consumption, small size, low weight, easy installation and without delay in control. All these features have attracted researcherstousethisactuatorinavarietyofcases, such as turbulence ow control, laminar to turbulent transition suppression, separation control, drag reduction and mitigationofnoisepollution. However, mostofthestudiessu erfromlackofanaccuratenumericalmodelwhich cansimulatethisphenomenonindetails. Computational analysisofthisphenomenonisverycomplexanddicult due to a combination of ionization phenomena and the interaction of the uid ow with the actuator e ects. For the exact solution of this phenomenon in certain conditions, Maxwell and Navier-Stokes equations must be combined, while this non-linear solution combination willbeverydicult. Oneofthemodelsformodelingthe interactionbetweentheactuatorand uid owisanelectrostatic model which adds the actuator e ect as source termsinthemomentumequationsbysolvingtheelectrical potential equation and charge density equation. In this study, an improvement is proposed to enhance the simulation accuracy of a model used for plasma actuator e ect under interaction with uid ow. In the modied model suggested, a boundary condition for charge distribution on the charged surface is presented based on a relationship between the independent electrical potential and charge density equations. Further, semi-empirical relations are utilized to calculate the produced plasma extend. The e ect of the actuator on induced jet shows a good agreement with experimental results and does not need experimental tests for parametric calibration.

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APA: Copy

EBRAHIMI, A., & OMIDI, J.. (2018). MODIFICATION OF A PLASMA ACTUATOR MODEL FOR INDUCED WALL-JET SIMULATION. MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING), 34-3(2 ), 11-17. SID. https://sid.ir/paper/399140/en

Vancouver: Copy

EBRAHIMI A., OMIDI J.. MODIFICATION OF A PLASMA ACTUATOR MODEL FOR INDUCED WALL-JET SIMULATION. MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING)[Internet]. 2018;34-3(2 ):11-17. Available from: https://sid.ir/paper/399140/en

IEEE: Copy

A. EBRAHIMI, and J. OMIDI, “MODIFICATION OF A PLASMA ACTUATOR MODEL FOR INDUCED WALL-JET SIMULATION,” MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING), vol. 34-3, no. 2 , pp. 11–17, 2018, [Online]. Available: https://sid.ir/paper/399140/en

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