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Numerical Study Of Nonlinear Oscillations And Pattern Formation İn Glow Discharge Semiconductor System
Date
2014-02-01
Author
Rafatov, İsmail
Çakır, Serhat
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We studied asystem consisted of a planar glow discharge layer with short length in the forward direction and wide lateral dimensions, which iscoupled to a semiconductor layer with low conductivity. The whole structure is sandwiched between two planar electrodes, to which a dc voltage is applied. Experiments show that such a system can create different homogeneous stationary and homogeneous oscillating modes, patterns with spatial and spatiotemporal structures. We developed and applied full three-dimensional fluid numerical code to study temporal and spatial pattern formation in this system.
URI
https://hdl.handle.net/11511/84705
Conference Name
International Conference on Plasma Physics and Controlled fusion (10 - 14 Şubat 2014)
Collections
Department of Physics, Conference / Seminar
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The work deals with the study of nonlinear oscillations in a system, consisted of planar glow discharge layer, coupled to a high-ohmic semiconductor layer. The whole system is sandwiched between two planar electrodes, to which the DC voltage is applied. The discharge models are developed in Comsol Multiphysics (v5.2), and based on fluid description of plasma, with drift-diffusion approximation for charged particle fluxes. Numerical tests are carried out for the discharge in Nitrogen, with GaAs semiconductor la...
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The confined flow of a Newtonian fluid around a square cylinder mounted in a rectangular channel was investigated both numerically and experimentally. Ratio between the pipe and channel height, the blockage ratio, is kept constant at 1/4. The flow variables including streamlines, vorticity and drag coefficients were calculated at 0 <= Re <= 50 using finite volume method. The velocity terms in the momentum equations are approximated by a higher-order and bounded scheme of Convergent and Universally Bounded I...
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İ. Rafatov and S. Çakır, “Numerical Study Of Nonlinear Oscillations And Pattern Formation İn Glow Discharge Semiconductor System,” presented at the International Conference on Plasma Physics and Controlled fusion (10 - 14 Şubat 2014), Zvenigorod, Rusya, 2014, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/84705.