TY - JOUR
ID - 485
TI - A Finite Volume Study on the Effects of Electro-Hydro-Dynamic Fluid Acceleration on Airflow Around a Cylinder at Low Reynolds Numbers
JO - Journal of Applied Fluid Mechanics
JA - JAFM
LA - en
SN - 1735-3572
AU - Tathiri, G.
AU - Parishani, H.
AU - Esmaeilzadeh, E.
AD - Department of Engineering, Zanjan Branch, Islamic Azad University, Zanjan, Iran
AD - Department of Earth System Science, University of California Irvine, Irvine, CA 92697-3100, USA
AD - Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran
Y1 - 2017
PY - 2017
VL - 10
IS - 3
SP - 889
EP - 897
KW - Drag force
KW - Laminar boundary layer
KW - Electro
KW - hydro
KW - dynamic fluid acceleration
DO - 10.18869/acadpub.jafm.73.240.25093
N2 - Applying a high-voltage electric field in a flow (electro-hydrodynamics or EHD) is a highly effective approach to locally accelerate a fluid to a desired speed. In this paper, a finite volume implementation is used to study the fluid flow around a fixed cylinder at a low Reynolds number. Two pairs of wire-plate electrodes are used to generate the electric field for fluid acceleration. Two Reynolds numbers are considered: Re=40, 100. We show that by increasing the Reynolds number, the relative effect of EHD is decreased. Further, we study the change in drag force due to EHD actuation. Finally, we showed that under certain voltage, electrode placement and Reynolds number the EHD fluid acceleration does not increase the total drag on the cylinder and yet leads to an increase in the total streamwise momentum transfer by augmenting the velocity at the top of the boundary layer.
UR - https://www.jafmonline.net/article_485.html
L1 - https://www.jafmonline.net/article_485_48355684ecd8d13309c455ba7abb1ac5.pdf
ER -