Abstarct: In this thesis methods of flow metering by the adoption of electric plasma are studied and one of them is investigated experimentally and by computer simulation. According to the selected method, a bundle of ions release from a pulsed electric discharge in the air stream and fly with the flow until hits and detected by a probe located at a known distance downstream. The flight distance divide into flight time can provide airflow speed. A setup is arranged for the experimental survey, Main elements are a corona discharge as an ion source which is located in the vessel wall, an electronic circuit for the detection of ions, and a uniform, and controllable source of airflow by utilizing a homemade wind tunnel. Detector signals clearly prove the relation between airspeed and flight time, but measured speed is not equal to the flow stream. This error appears due to the instrument's weakness and also some physical phenomena reveals in the computer simulation. Computer simulation of the corona discharge and ion diffusion in the air was done by COMSOL software and by solving the governing plasma and fluid equations. Results show the boundary laxyer effect on ions passage, which could affect their flight time. Actually, ions are traveling through a streamline in the boundary laxyer and their speed is a fraction of the mainstream velocity. This proportion got investigated analytically, and the accommodation between experimental results and analytical results was achieved.