November 26, 2025
Europe/Bratislava timezone

Study of transient spark using schlieren imaging

Nov 26, 2025, 11:04 AM
1m
Študenti fyzika Poster session + káva: prezentácie študentov Fyzika Poster session + káva: prezentácie študentov Fyzika

Description

Transient spark (TS) a pulsed, atmospheric-pressure discharge transitioning between non-equilibrium and equilibrium plasma is important for applications like sterilization. This work focuses on optical diagnostics of the TS is high-speed gas-dynamic behavior. We employed high-speed schlieren imaging to visualize gas density gradients, complemented by numerical simulations of the electric field. Preliminary schlieren results identify three phases: a pre-discharge (initial heating, ionic wind), the main discharge (spark channel formation, shockwave), and a post-discharge (shockwave expansion, heat flux decomposition).

Pracovisko fakulty (katedra)/ Department of Faculty Fakulta matematiky, fyziky a informatiky UK, Katedra astronómie, fyziky Zeme a meteorológie
Tlač postru/ Print poster Budem požadovať tlač /I hereby required to print the poster in faculty

Author

Co-authors

Dr Mário Janda (Comenius University) Peter Toth (Comenius University Bratislava)

Presentation materials