INP

Leibniz Institute for Plasma Science and Technology
Felix-Hausdorff-Str. 2
17489 Greifswald
GERMANY

https://www.inp-greifswald.de/en/
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The Leibniz Institute for Plasma Science and Technology (INP) is the largest non-university institute in the field of low temperature plasmas, their basics and technical applications in Europe. The institute carries out research and development from idea to prototype. The topics focus on the needs of the market. At present, plasmas for materials and energy as well as for environment and health are the focus of interest.

Cite Dataset

Comparative studies on the radiative heat transfer in arc plasma and its impact in a model of a free-burning arc in argon−Dataset

The radiative heat transfer in arc plasma models is considered from the point of view of its description in terms of a net emission coefficient, the method of spherical harmonics in its lowest order, and the discrete ordinate method. Net emission coefficients are computed, applying approximate analytical and numerical approaches and a multi-band representation of the spectral absorption coefficient with three kinds of its averaging and two datasets. Self-consistent access to the radiative heat transfer is applied to a two-dimensional axisymmetric model of a free-burning arc in argon at atmospheric pressure. The results obtained from the models employing the net emission coefficient, the method of spherical harmonics, and the discrete ordinate method are compared. The dataset provided here supports results in the article [Baeva, M.; Cressault, Y.; Kloc, P., "Comparative Studies on the Radiative Heat Transfer in Arc Plasma and Its Impact in a Model of a Free-Burning Arc" 2024, 7, 631–650, https://doi.org/10.3390/plasma7030033]. In particular, the obtained approximate net emission coefficient and the net emission coefficient based on the P1-approach and the DOM for cylindrical isothermal plasma are provided.

FieldValue
Group
Authors
Release Date
2024-08-26
Identifier
da9b8d93-cc51-4595-a417-35760bef6060
Permanent Identifier (DOI)
Permanent Identifier (URI)
Is supplementing
Plasma Source Name
Plasma Source Application
Plasma Source Specification
Plasma Source Properties

The model of the free-burning arc in this work employs a tungsten-inert gas arrangement in a 2D axisymmetric computational domain. It includes a La-W cathode with a length of 20 mm, a radius of 2 mm, and a truncated 60° conical tip (a plateau radius of 0.2 mm). The anode is a water-cooled copper plate with a radius of 33 mm and a thickness of 7 mm. The distance between the cathode tip and the anode is 8 mm. The arc burns at a direct current of 100 A.

Plasma Medium Name
Plasma Medium Properties

The arc burns in atmospheric-pressure argon. The gas is fed with a flow rate of 12 slm through a nozzle with an inner radius of 8 mm.

Plasma Diagnostics Name
Plasma Diagnostics Properties

Simulations are performed applying the net emission coefficient 𝜀𝑁 (with R = 1 mm), the method of spherical harmonics (first order, P1), and the and discrete ordinate method (DOM).

Plasma Diagnostics Procedure

The net emission coefficient (NEC), method of spherical harmonics (P1 as the lowest order), and discrete ordinate method (DOM) methods are implemented into a 2D axisymmetric model of a free-burning arc. Each method requires the knowledge of the radiative properties of the plasma. In the framework of the arc model employing the NEC, the values of the NEC have to be computed prior to the simulation and provided as a function of the temperature. The arc models employing the P1 and the DOM methods make use of a mean absorption coefficient (Planck, Rosseland, hybrid) obtained as a function of the temperature for a number of frequency bands.

Language
English
License
Public Access Level
Public
Contact Name
Margarita Baeva
Contact Email

Data and Resources