Numerical study of electrode bank enhanced heat transfer

Heat transfer enhancement using electrohydrodynamic technique inside channel with several electrode bank arrangements is numerically investigated. The flow considered is in laminar region and the electric field is generated by wire electrodes charged with DC high voltage. The mathematical modeling of computational fluid dynamics includes the interactions between electric, flow, and temperature fields. It can be perceived that the heat transfer enhancement coefficient with the presence of electric field increases in relation with the supplied voltage but decreases with the Reynolds number and the distance between electrode and channel surface. The electrode bank arrangement which obtains the best heat transfer performance is expressed incorporating with the optimum electrode distance ratio. Moreover, the heat transfer enhancement is also depended on the number of electrodes per length and the channel dimensions.