Simulations of Electrical Discharges in Air Using Stabilized Drift-Diffusion Model

• The implementation of a drift-diffusion model of discharges in air utilizing stabilized logarithmic finite-element formulation of governing equations is presented. The performance of the proposed method is examined in a number of numerical tests. The developed approach is verified by conducting simulations of a positive streamer in air in a needle-plane electrode system, and the results are compared with those available in the literature. Furthermore, the simulations of a nonaxially propagating double-headed discharge developing between edges of flat disk electrodes are presented and discussed.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Teknisk mekanik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Applied Mechanics (hsv//eng)

NATURVETENSKAP  -- Matematik -- Beräkningsmatematik (hsv//swe)

NATURAL SCIENCES  -- Mathematics -- Computational Mathematics (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Farkostteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Vehicle Engineering (hsv//eng)

Nyckelord

gas discharge

streamer propagation

space charge

electric field

Drift-diffusion model

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