An Alternating-Frequency Electromagnetic Fusion Method for Flow Measurement

Abstract

The article proposes an alternating-frequency electromagnetic approach for the measurement of flow velocity and fluid conductivity. The system integrates nested inductive coils and electrodes, applying high- and low-frequency excitations to generate a dynamic primary magnetic field within the measurement domain. As conductive fluids traverse this domain, both induced and motional electromotive forces (EMFs) are generated. By analyzing the electrode potentials and phase angles associated with coil-induced voltages, the system extracts real-time information about flow velocity and fluid conductivity. Simulation results demonstrate that the proposed method enables co-located, high-resolution measurements of velocity and conductivity, offering a new pathway for flow measurement.