Role of Electric Field on Peristaltic Flow of a Micropolar Fluid
Peristaltic transport of a micropolar fluid is investigated in the view of an electric field. Debye-Hückel linearization is employed to simplify the problem, and electrical double layer (EDL) is considered very thin so that the effect of applied electric field is represented in terms of the electroosmotic slip velocity (i.e., Helmholtz–Smoluchowski velocity) at the channel walls. Axial velocity is achieved in the form of closed expression through low Reynolds number and long wavelength approximations. The effects of electric field and coupling number are shown by plotting graphs based on computational results. It is found that the axial velocity enhances with the electric field applied in the flow direction and diminishes with the electric field applied against the flow direction.
KeywordsPeristaltic flow Micropolar fluid EDL Helmholtz–Smoluchowski velocity
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