Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Numerical analysis of flow field and heat transfer affected by Electrohydrodynamic actuator using micropolar model

Authors
Hesam Moayedi 1
Nima Amanifard 1
Hamed Deylami 2
1 Mechanical Engineering Department, Faculty of Engineering, University of Guilan, Rasht, Iran
2 Department of mechanical engineering, Guilan University
Abstract
In this work, the effect of emitter electrode arrangement on the Electrohydrodynamic effectiveness is studied using micropolar fluid model through a smooth channel. Finite volume method by the open source CFD code OpenFOAM is used to solve governing equations. The effects of longitudinal position and the gap between emitter electrode and collector electrode, as well as, longitudinal arrangements are investigated. The computed results of micropolar approach are compared with obtained from the fully turbulent k-ε model. The results of each type of the EHD flow with certain conditions show that the adequate material parameter(κ_ω⁄μ) is constant for the longitudinal electrode arrangements for single electrode and multiple electrodes because this parameter completely depends on the flow and the high magnitude of electric body force. Also, this parameter is increased with decrease of the gap between emitter electrode and collector electrode. In addition, the heat transfer enhancement and also the flow pattern has the same efficiency for both the micropolar and the k-ε models.
Keywords
Electrohydrodynamic
Micropolar model
Material parameter
Numerical approach
 
[1] Dolati, F., Amanifard, N., Daylami, H. M., and Yazdani, K., "Numerical Analysis of the Electric Field Effect on Mass Transfer Through a Moist Object", Modares Mechanical Engineering, Vol. 17, No. 1, pp. 383-393, (2017).
 
[2] Leonard, G., Mitchner, M., and Self, S., "An Experimental Study of the Electrohydrodynamic Flow in Electrostatic Precipitators", Journal of Fluid Mechanics, Vol. 127, pp. 123-140, (1983).
 
[3] Davidson, J. H., and Shaughnessy, E. J., "Turbulence Generation by Electric Body Forces", Experiments in Fluids, Vol. 4, No. 1, pp. 17-26, (1986).
 
[4] Kallio, G., and Stock, D., "Interaction of Electrostatic and Fluid Dynamic Fields in Wire Plate Electrostatic Precipitators", Journal of Fluid Mechanics, Vol. 240, pp. 133-166, (1992).
 
[5] Soldati, A., and Banerjee, S., "Turbulence Modification by Large-scale Organized Electrohydrodynamic Flows", Physics of Fluids, Vol. 10, No. 7, pp. 1742-1756, (1998).
 
[6] Ahmedou, S. O., and Havet, M., "Effect of Process Parameters on the EHD Airflow", Journal of Electrostatics, Vol. 67, No. 2-3, pp. 222-227, (2009).
 
[7] Deylami, H. M., Amanifard, N., Dolati, F., Kouhikamali, R., and Mostajiri, K., "Numerical Investigation of using Various Electrode Arrangements for Amplifying the EHD Enhanced Heat Transfer in a Smooth Channel", Journal of Electrostatics, Vol. 71, No. 4, pp. 656-665, (2013).
 
[8] Kasayapanand, N., and Kiatsiriroat, T., "Optimized Electrode Arrangement in Solar Air Heater", Renewable Energy, Vol. 31, No. 4, pp. 439-455, (2006).
 
[9] Ayuttaya, S. S. N., Chaktranond, C., and Rattanadecho, P., "Numerical Analysis of Electric Force Influence on Heat Transfer in a Channel Flow (Theory Based on Saturated Porous Medium Approach)", International Journal of Heat and Mass Transfer, Vol. 64, pp. 361-374, (2013).
 
[10] Peng, M., Wang, T. H., and Wang, X. D., "Effect of Longitudinal Electrode Arrangement on EHD-Induced Heat Transfer Enhancement in a Rectangular Channel", International Journal of Heat and Mass Transfer, Vol. 93, pp. 1072-1081, (2016).
 
[11] Molki, M., and Damronglerd, P., "Electrohydrodynamic Enhancement of Heat Transfer for Developing Air Flow in Square Ducts", Heat Transfer Engineering, Vol. 27, No. 1, pp. 35-45, (2006).
 
[12] Eringen, A. C., "Simple Microfluids", International Journal of Engineering Science, Vol. 2, No. 2, pp. 205-217, (1964).
 
[13] Moayedi, H., Amanifard, N., Deylami, H. M., and Dolati, F., "Numerical Investigation of using Micropolar Fluid Model for EHD Flow Through a Smooth Channel", Journal of Electrostatics, Vol. 87, pp. 51-63, (2017).
 
[14] Lukaszewicz, G., "Micropolar Fluids: Theory and Applications", Springer Science & Business Media, (1999).
 
[15] Eringen, A., and Ryan, M., "Microcontinuum Field Theories II: Fluent Media", Applied Mechanics Reviews, Vol. 55, pp. B15, (2002).
 
[16] Swapna, G., Kumar, L., and Bhardwaj, N., "Study of Effects of Radiation and Magnetic Field on the Mixed Convection Micropolar Fluid Flow Towards a Stagnation Point on a Heated Vertical Permeable Plate using Finite Element Method", International Journal of MechanicSystems Engineering, Vol. 5, No. 1, pp. 1-13, (2015).
 
[17] Sandeep, N., and Sulochana, C., "Dual Solutions for Unsteady Mixed Convection Flow of MHD Micropolar Fluid Over a Stretching/Shrinking Sheet with Non-uniform Heat Source/Sink", Engineering Science and Technology, an International Journal, Vol. 18, No. 4, pp. 738-745, (2015).
 
[18] Direct, C., "The Architects of OpenFOAM", OpenFOAM User Guide, (2015).
 
[19] Heidarinejad, G., and Babaei, R., "Numerical Investigation of the Electric Field Effect on the Flow Field and Enhancement of the Water Evaporation Rate", Modares Mechanical Engineering, Vol. 16, No. 1, pp. 101-110, (2015).
 
[20] Oussalah, N., and Zebboudj, Y., "Finite-element Analysis of Positive and Negative Corona Discharge in Wire-to-plane System", The European Physical Journal Applied Physics, Vol. 34, No. 3, pp. 215-223, (2006).
Iranian Journal of Mechanical Engineering Transactions of ISME
Volume 21, Issue 2 - Serial Number 55
Fluid Mechanics and Heat Transfer
Spring 2019
Pages 133-154

  • Receive Date 29 October 2018
  • Revise Date 19 November 2018
  • Accept Date 20 October 2019