One-dimensional analysis of a wire-rod type Electrohydrodynamic gas pump

Abstract

Experimental investigations and cross sectional averaged one-dimensional analyses of a wire-rod type Electrohydrodynamic (EHD) gas pump have been conducted. The EHD gas pump was made of an acrylic pipe (20 mm inner diameter, 220 mm long) with a wire electrode 60 μιη in diameter and a rod electrode 3 mm in diameter. Applying a dc high voltage between these electrodes, a corona discharge was initiated and EHD gas flow was induced. The flow velocity at the exit of the pump, and the differential pressure between the inlet and exit were measured. These experimental results were analyzed by the cross sectional averaged one-dimensional modified Bernoulli model with head loss. Considering the EHD gas flow, the Coulomb force was introduced in the model. The results show that the effect of both minor head losses and wall friction loss plays a significant role for the EHD gas pump performances.