A simplified model for estimating heat transfer coefficient in a chamber with electrohydrodynamic effect (corona wind)

A negative corona wind generated in air by high electric potential difference is numerically modeled here. To simulate the ion generation and drag phenomenon, a unipolar approximation method is applied which takes into account both electrons and negative ions. The significance of this simulation method is replacing the complexity of ionization kinetics with the simplicity of a single boundary condition on the active electrode. To the knowledge of the authors, this is the first application of this method to the investigation of heat transfer coefficient. The results verified that increasing the applied voltage increases average convection heat transfer coefficient, peaking at 23.5 W/(m2.K).