Numerical investigation of collecting wire electrode effect on the flow field and heat transfer with electrohydrodynamic actuator

Authors

1 University of Guilan, Faculty of engineering, Department of mechanical engineering

2 Faculty of Technology and Engineering, East of Guilan, University of Guilan, Rudsar, Iran

Abstract

In this paper, the flow and temperature fields affected by electric field in the presence of wire collecting electrode are numerically investigated for the two-dimension, incompressible, turbulent, and steady flow conditions with the finite volume approach. The computational methodology includes the use of a structured, non-uniform quadrilateral grid, and the Standard K- model was adopted as the turbulence model. The computed results are compared with the experimental data and the results agree very well. Then, the effect of different parameters such as collecting electrode radius, the applied voltage, Reynolds number, and the distance between emitting and collecting electrodes on the flow pattern and heat transfer coefficient is evaluated. The numerical results show that the influence of electrohydrodynamic phenomenon on the heat transfer enhancement increases with radius of the grounded electrode and the applied voltage but decreases when the Reynolds number and distance between electrodes are augmented. The results indicate that electrohydrodynamic actuator acts as a generator of secondary flow and these vortices were used to enhance the forced convection heat transfer.

Keywords

Main Subjects

References

[1] Jewell-Larsen NE, Ran H, Zhang Y, Schwiebert MK, Honer KA (2009) Electrohydrodynamic (EHD) cooled laptop. 25th IEEE Semi-Therm Symposium: 261-266.
[2] Moreau E, Léger L, Touchard G (2006) Effect of a DC surface-corona discharge on a flat plate boundary layer for air flow velocity up to 25 m/s. J Electrostat 64: 215-225.
[3] Roberto S, Guillermo A (2006) Steady control of laminar separation over airfoils with plasma sheet actuators. J Electrostat 64: 604-610.
[4] Lai FC, Lai KW (2002) EHD-enhanced drying with wire electrode. Drying Technology 20: 1393-1405.
[5] Lai FC, Wang CC (2008) Drying of partially wetted materials with corona wind and auxiliary heat. Proc. ESA Annual Meeting on Electrostatics Paper B1.
[6] Kasayapanand N, Tiansuwan J, Asvapoositkul W, Vorayos N, Kiatsiriroat T (2002) Effect of the electrode arrangements in a tube bank on the characteristic of electrohydrodynamic heat transfer enhancement: low reynolds number. J Enhanc Heat Transf 9: 229-242.
[7] Kasayapanand N, Kiatsiriroat T (2005) EHD enhanced heat transfer in wavy channel. Int Commun Heat Mass 32: 809-821.
[8] Go DB, Maturana RA, Fisher TS, Garimella SV (2008) Enhancement of external forced convection by ionic wind. Int J Heat Mass Tran 51: 6047-6053.
[9] Ahmedou SO, Havet M (2009) Analysis of the EHD enhancement of heat transfer in a flat duct. IEEE T Dielect El In 16: 489-494.
[10] Shakouri Pour M, Esmaeilzadeh E (2011) Experimental investigation of convective heat transfer enhancement from 3D-shape heat sources by EHD actuator in duct flow. Exp Therm Fluid Sci 35: 1383-1391.
[11] Lakeh RB, Molki M (2012) Targeted heat transfer augmentation in circular tubes using a corona jet. J Electrostat 70: 31-42.
[12] Lakeh RB, Molki M (2013) Enhancement of convective heat transfer by electrically-induced swirling effect in laminar and fully-developed internal flows. J Electrostat 71: 1086-1099.
[13] Tathiri Gh, Pouryoussefi Gh, Doostmahmoudi A, Mirzaei M (2014) Experimental investigation of the effect of dielectric barrier on induced velocity of quiescent air boundary layer with comparison of corona wind and AC-DC DBD plasma. Journal of Solid and Fliud Mechanics 3(4): 103-110.
[14] Deylami HM, Amanifard N, Dolati F, Kouhikamali R, Mostajiri K (2013) Numerical investigation of using various electrode arrangements for amplifying the EHD enhanced heat transfer in a smooth channel. J Electrostat 71: 656-665.
[15] Ayuttaya SSN, Chaktranond C, Rattanadecho P (2013) Numerical analysis of electric force influence on heat transfer in a channel flow (theory based on saturated porous medium approach). Int J Heat Mass Tran 64: 361-374.
[16] Moghanlou FS, Khorrami AS, Esmaeilzadeh E, Aminfar H (2014) Experimental study on electrohydrodynamically induced heat transfer enhancement in a minichannel. Exp Therm Fluid Sci 59: 24-31.
[17] FLUENT 6.3 user’s guide, Fluent Inc., Lebanon, NH (2006).
[18] Mostajiri Abid k, Amanifard N, Mohaddes  Deylami H, Dolati F (2015) Numerical investigation of the electric field effects on the flow and forced convection heat transfer over a backward-facing step. Journal of Solid and Fluid Mechanics 5(2): 231-246.
[19] Adamiak K, Atten P (2004) Simulation of corona discharge in point–plane configuration. J Electrostat 61: 85-98.
[20] Oussalah N, Zebboudj Y (2006) Finite-element analysis of positive and negative corona discharge in wire-to-plane system. Eur Phys J-Appl Phys 34: 215-223.
Journal of Solid and Fluid Mechanics
Volume 6, Issue 1
March and April 2016
Pages 201-213

Files

Share

How to cite

Statistics