Theory of Gas Discharge Plasma

Smirnov, Boris M.

doi:10.1007/978-3-319-11065-3

Cited by 70 publications

(55 citation statements)

References 253 publications

(518 reference statements)

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“…In this case, the thermal agitation of molecules overcomes the electrical diffusivity. [34,35] As a consequence, the mass transfer rate of SO 2 from the gas to the droplet surface is scarcely affected by the Coulombic or charge-dipole interactions occurring between droplets (either charged or uncharged) and SO 2 (either in a molecular form or ionized), and the usual diffusional and convective mechanisms prevail.…”

Section: Tests With Charged Droplets and Corona Pre-chargingmentioning

confidence: 99%

Absorption of sulphur dioxide by electrosprayed droplets

et al. 2020

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This paper describes and discusses experimental results on the absorption of sulphur dioxide in electrified water sprays, either when the polluted gas is treated as is or when the gas is exposed to a corona source to ionize the sulphur dioxide. The experiments revealed that an electrified spray with a charge‐to‐mass ratio of 50 μC · kg−1 enabled the absorption rate of droplets to double, regardless of their polarities. Corona charging gave rise to an increase in the SO2 depletion rate over the scrubber wall, while negligible effects appeared on the actual droplets absorption rate. These findings suggested that faster absorption rates mostly, though not uniquely, depend on the modifications on the morphological and interfacial properties of the sprayed droplets induced by the free electric charge imposed on their surface. Conversely, the absorption rates were negligibly affected by the electrical interactions between droplets (either charged or uncharged) and the sulphur dioxide ions/radicals originating from the corona source.

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Section: Tests With Charged Droplets and Corona Pre-chargingmentioning

confidence: 99%

Absorption of sulphur dioxide by electrosprayed droplets

et al. 2020

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“…In the modern industry, the various methods for producing a nonequilibrium plasma are existing. The main methods are carried out by means of the following types of discharges: a glow discharge, a discharge with a dielectric barrier, a corona discharge, and the same pulsed discharges [1][2][3][4]. In recent years, a method has been developed to produce non-equilibrium plasma by means of high-voltage nanosecond pulses generated by pulsed energy devices [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

The method of processing the droplet-air flow by non-equilibrium plasma

et al. 2019

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The paper considers a fundamentally new installation for the processing of a droplet-air environment in a non-equilibrium plasma. Its various designs are presented. This installation is built on the basis of pulsed energy devices and is intended for water disinfection and decomposition of dissolved organic compounds, the production of nanomaterials, research in physics and chemistry, etc. We have conducted research of the performance and energy efficiency of this method of processing. It is established that in obtaining the target product, this method of processing has an advantage over the known methods: due to high performance and energy efficiency, as well as the simplicity of this processing method. In addition, the parasitic load capacity of the nanosecond generator is reduced several times, this fact increases the voltage rise rate on the cells of the plasma plasmatrons, which improves performance and energy efficiency.

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“…The Hamiltonian operator drives the complex-valued time derivative. Numerical methods solving Schrödinger equations are of great interest for the simulation and prediction of the reaction rates of fundamental processes in few-body physics and chemistry [Faddeev and Merkuriev 1993;Plasma 2010Committe 2007Raizer 1991;Smirnov 2015;Vanroose et al 2005]. The breakup of the H 2 -molecule with p = 2 parti-cles for example is solved in [Vanroose et al 2005].…”

Section: Introductionmentioning

confidence: 99%

Complex Additive Geometric Multilevel Solvers for Helmholtz Equations on Spacetrees

Reps

Weinzierl

2017

ACM Trans. Math. Softw.

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We introduce a family of implementations of low order, additive, geometric multilevel solvers for systems of Helmholtz equations arising from Schrödinger equations. Both grid spacing and arithmetics may comprise complex numbers and we thus can apply complex scaling to the indefinite Helmholtz operator. Our implementations are based upon the notion of a spacetree and work exclusively with a finite number of precomputed local element matrices. They are globally matrix-free.Combining various relaxation factors with two grid transfer operators allows us to switch from additive multigrid over a hierarchical basis method into a Bramble-Pasciak-Xu (BPX)-type solver, with several multiscale smoothing variants within one code base. Pipelining allows us to realise full approximation storage (FAS) within the additive environment where, amortised, each grid vertex carrying degrees of freedom is read/written only once per iteration. The codes realise a single-touch policy. Among the features facilitated by matrix-free FAS is arbitrary dynamic mesh refinement (AMR) for all solver variants. AMR as enabler for full multigrid (FMG) cycling-the grid unfolds throughout the computation-allows us to reduce the cost per unknown per order of accuracy.The present paper primary contributes towards software realisation and design questions. Our experiments show that the consolidation of single-touch FAS, dynamic AMR and vectorisation-friendly, complex scaled, matrix-free FMG cycles delivers a mature implementation blueprint for solvers of Helmholtz equations in general. For this blueprint, we put particular emphasis on a strict implementation formalism as well as some implementation correctness proofs.

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Theory of Gas Discharge Plasma

Cited by 70 publications

References 253 publications

Absorption of sulphur dioxide by electrosprayed droplets

Absorption of sulphur dioxide by electrosprayed droplets

The method of processing the droplet-air flow by non-equilibrium plasma

Complex Additive Geometric Multilevel Solvers for Helmholtz Equations on Spacetrees

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