首页|Electrohydrodynamic performance improvement using different actuation modes in a channel: A CFD simulation study
Electrohydrodynamic performance improvement using different actuation modes in a channel: A CFD simulation study
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NSTL
Elsevier
In the present work， the effect of periodic Electrohydrodynamic (EHD) actuation modes on enhancing heat transfer and cutting down energy consumption in a channel is numerically investigated。 For this purpose， a simple duty-cycled voltage is applied to the wire。 Moreover， the performance of the periodic actuation is compared with the steady actuation。 A descriptive EHD efficiency is used to evaluate the effect of the periodic EHD actuation on heat transfer enhancement and electric power consumption。 The results show that reducing the time duration of the actuation in the periodic mode leads to reducing the friction factor， heat transfer efficiency， and energy consumption。 The results also show that using the periodic actuation for Reynolds numbers of 500 and 1000 compared to the steady actuation case increases the performance evaluation criterion and reduces energy consumption by 70% and 50%， respectively。 The results indicate that compared to the steady EHD actuation， the energy consumption of periodic EHD with the time duration of the actuation of 0。1 s is reduced by 90%， while the heat transfer efficiency decreases by 32。05% at Re = 500。 Consequently， the EHD efficiency increases by reducing the time duration of the actuation and the Reynolds number。 Furthermore， the results indicate that replacing one wire in steady actuation with two wires in periodic actuation improves heat transfer or decreases friction factor without changing the energy consumption。
ElectrohydrodynamicEnergy consumptionHeat transfer enhancementNumerical simulationPeriodic actuation
Moayedi H.、Mohaddes Deylami H.
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Thermo and Fluids Department Faculty of Mechanical Engineering University of Guilan
Faculty of Technology and Engineering East of Guilan University of Guilan
NSTL
Elsevier
