Fluctuations of potential induced by turbulent flows of dielectric liquids through metallic pipes

An analysis is presented of the fluctuations of the potential difference between two parts of metallic tube insulated to each other and through which a dielectric liquid is flowing with a turbulent flow. First, the phenomenon of the convection of the double layer appearing at the contact solid/liquid and in the case of a turbulent flow is described. Then, the expected reasons of the potential fluctuations existing are proposed. Equipment is developed to measure the potential difference, and the experiments are presented and discussed.<>