Výsledky vyhledávání - "Hundsdorfer, W."

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Modified Douglas Splitting Methods for Reaction-Diffusion Equations

Autor: Arraras, A., Hout, K. J. in't, Hundsdorfer, W., Portero, L.

We present modifications of the second-order Douglas stabilizing corrections method, which is a splitting method based on the implicit trapezoidal rule. Inclusion of an explicit term in a forward Euler way is straightforward, but this will lower the

Externí odkaz: http://arxiv.org/abs/1512.01445

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Interaction of streamers in air and other oxygen-nitrogen mixtures

Autor: Luque, A., Ebert, U., Hundsdorfer, W.

Publikováno v: Phys. Rev. Lett. 101, 075005 (2008)

The interaction of streamers in nitrogen-oxygen mixtures such as air is studied. First, an efficient method for fully three-dimensional streamer simulations in multiprocessor machines is introduced. With its help, we find two competing mechanisms how

Externí odkaz: http://arxiv.org/abs/0712.2774

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An adaptive grid refinement strategy for the simulation of negative streamers

Autor: Montijn, C., Hundsdorfer, W., Ebert, U.

Publikováno v: J. Comp. Phys. 219 (2006), 801-835

The evolution of negative streamers during electric breakdown of a non-attaching gas can be described by a two-fluid model for electrons and positive ions. It consists of continuity equations for the charged particles including drift, diffusion and r

Externí odkaz: http://arxiv.org/abs/physics/0603070

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Tunneling-assisted impact ionization fronts in semiconductors

Autor: Rodin, P., Ebert, U., Hundsdorfer, W., Grekhov, I. V.

Publikováno v: J. Appl. Phys. 92, 958 (2002)

We propose a novel type of ionization front in layered semiconductor structures. The propagation is due to the interplay of band-to-band tunneling and impact ionization. Our numerical simulations show that the front can be triggered when an extremely

Externí odkaz: http://arxiv.org/abs/cond-mat/0111278

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