Tibor Terebessy

Absolute pressure sensing with bipolar corona discharge: Design, simulation and experimental validation

In this paper we present, for the first time, a reliable cost-effective absolute pressure sensor based on a novel bipolar corona system, which monitors pressure by producing both polarities of corona discharge simultaneously. The unique setup increases sensitivity and stability of the sensor. Systematical design study, numerical simulation and experiment of five prototypes acquired consistent results. With sub-microampere operating current, the sensors have temperature-independent sensitivity and good repeatability.

Jet flow focusing by corona discharge for fluidic application

This paper presents a study on a jet flow assisted by low net charge ion wind generated from bipolar corona setup, adding momentum to the bulk flow directed alongside the electrodes and focused in the middle of interelectrode space. It was confirmed that with only 27.1 mW of consumed discharge power, the corona helped to focus and increased the flow peak velocity up to 71.6%, i.e., from 1.41 m/s to 2.42 m/s. Because the generated air flow remains neutral, this work can contribute to the development of multi-axis fluidic inertial sensors, fluidic mixing and analysis with space constraints and/or where neutralized discharge process is required.

A symmetrically arranged electrodes for corona discharge anemometry

This paper presents a novel anemometry based on bipolar corona discharge probe with symmetrically arranged parallel electrodes, which is potentially applicable for in-situ measurement. With the proposed configuration, under the existence of the airflow, the decomposed gas is redistributed towards the downstream electrode, and changes the current-voltage characteristics of the system. Experimental study on the anemometry characteristics demonstrates the possibility of measuring a wide range of air flow rate/ flow velocity, i.e., up to 80 l/m.