| Form of presentation | Articles in international journals and collections |
| Year of publication | 2023 |
| Язык | английский |
|
Kugurakova Vlada Vladimirovna, author
Civilskiy Ilya Vladimirovich, author
|
| Bibliographic description in the original language |
Tsivilskiy I.V, Kugurakova V.V., Optimizing the Design of an HF Plasma Discharge Powder Processing System for Enhanced Tail Flame Stabilization: A Mathematical Modeling Approach//Lobachevskii Journal of Mathematics. - 2023. - Vol.44, Is.11. - P.5072-5094. (Q2) |
| Annotation |
Abstract—A novel, self-consistent model for analyzing the electromagnetic and heat-mass transfer
phenomena within a conducting gas has been developed. This model, although based on well-
established Maxwell's and Navier–Stokes equations, is tailored for technological powder processing
plasma system.
The gas is treated as compressible, and its electrical conductivity, as well as radiative losses of hot
plasma, are dependent on local temperature. Maxwell's equations are reformulated into a frequency
domain equation using complex values of the magnetic vector potential. This equation is further
split into real and imaginary parts, resulting in a system of coupled equations, which are discretized
and solved in the ANSYS Fluent using the finite volume method through the user-defined scalar
and user-defined functions application programming interface in C. This model operates allows for
the calculation of temporal-spatial distributions of electromagnetic fields, temperature and velocity
of gas flow with particles within the torch and cooling chamber.
Simulation results firstly have revealed unwanted gas-driven effects, particularly in the form of
vortices downstream of the plasma tail flame. These vortices negatively impact the predictability
of particle synthesis and may trap particles, preventing them from following the desired temperature
history. Given the primary application of plasmatron systems in the production and processing of
metal powder materials for additive manufacturing, the goal is to optimize the cooling chamber's
design. This aims to promote laminar gas flow inside the chamber and prevent particle deposition on
its walls, thereby minimizing material losses.
The calculations performed using this developed model enable the identification of adverse gas
dynamic effects during particle synthesis. Based on a series of calculations, new design solutions
have been proposed to mitigate these adverse effects. This work encompasses two approaches to
shape optimization: automatic adjoint-based optimization and semi-automatic optimization. By
combining these methodologies, a substantial enhancement of the cooling chamber design has been
achieved, reducing vortices near the chamber walls by up to 80%. This improvement results in a
more laminar tail flame, enhancing the predictability and precision of powder processing. |
| Keywords |
finite volume method, Maxwell's and Navier-Stokes equations, time-frequency domain, inductively coupled discharge, powder processing, optimization. |
| The name of the journal |
Lobachevskii Journal of Mathematics
|
| URL |
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85187885843&doi=10.1134%2fS1995080223110392&partnerID=40&md5=14341fffafe8bbfa96b943e50f48c815 |
| Please use this ID to quote from or refer to the card |
https://repository.kpfu.ru/eng/?p_id=297259&p_lang=2 |
Full metadata record  |
| Field DC |
Value |
Language |
| dc.contributor.author |
Kugurakova Vlada Vladimirovna |
ru_RU |
| dc.contributor.author |
Civilskiy Ilya Vladimirovich |
ru_RU |
| dc.date.accessioned |
2023-01-01T00:00:00Z |
ru_RU |
| dc.date.available |
2023-01-01T00:00:00Z |
ru_RU |
| dc.date.issued |
2023 |
ru_RU |
| dc.identifier.citation |
Tsivilskiy I.V, Kugurakova V.V., Optimizing the Design of an HF Plasma Discharge Powder Processing System for Enhanced Tail Flame Stabilization: A Mathematical Modeling Approach//Lobachevskii Journal of Mathematics. - 2023. - Vol.44, Is.11. - P.5072-5094. (Q2) |
ru_RU |
| dc.identifier.uri |
https://repository.kpfu.ru/eng/?p_id=297259&p_lang=2 |
ru_RU |
| dc.description.abstract |
Lobachevskii Journal of Mathematics |
ru_RU |
| dc.description.abstract |
Abstract—A novel, self-consistent model for analyzing the electromagnetic and heat-mass transfer
phenomena within a conducting gas has been developed. This model, although based on well-
established Maxwell's and Navier–Stokes equations, is tailored for technological powder processing
plasma system.
The gas is treated as compressible, and its electrical conductivity, as well as radiative losses of hot
plasma, are dependent on local temperature. Maxwell's equations are reformulated into a frequency
domain equation using complex values of the magnetic vector potential. This equation is further
split into real and imaginary parts, resulting in a system of coupled equations, which are discretized
and solved in the ANSYS Fluent using the finite volume method through the user-defined scalar
and user-defined functions application programming interface in C. This model operates allows for
the calculation of temporal-spatial distributions of electromagnetic fields, temperature and velocity
of gas flow with particles within the torch and cooling chamber.
Simulation results firstly have revealed unwanted gas-driven effects, particularly in the form of
vortices downstream of the plasma tail flame. These vortices negatively impact the predictability
of particle synthesis and may trap particles, preventing them from following the desired temperature
history. Given the primary application of plasmatron systems in the production and processing of
metal powder materials for additive manufacturing, the goal is to optimize the cooling chamber's
design. This aims to promote laminar gas flow inside the chamber and prevent particle deposition on
its walls, thereby minimizing material losses.
The calculations performed using this developed model enable the identification of adverse gas
dynamic effects during particle synthesis. Based on a series of calculations, new design solutions
have been proposed to mitigate these adverse effects. This work encompasses two approaches to
shape optimization: automatic adjoint-based optimization and semi-automatic optimization. By
combining these methodologies, a substantial enhancement of the cooling chamber design has been
achieved, reducing vortices near the chamber walls by up to 80%. This improvement results in a
more laminar tail flame, enhancing the predictability and precision of powder processing. |
ru_RU |
| dc.language.iso |
ru |
ru_RU |
| dc.subject |
finite volume method |
ru_RU |
| dc.subject |
Maxwell's and Navier-Stokes equations |
ru_RU |
| dc.subject |
time-frequency domain |
ru_RU |
| dc.subject |
inductively coupled discharge |
ru_RU |
| dc.subject |
powder processing |
ru_RU |
| dc.subject |
optimization. |
ru_RU |
| dc.title |
Optimizing the Design of an HF Plasma Discharge Powder Processing System for Enhanced Tail Flame Stabilization: A Mathematical Modeling Approach |
ru_RU |
| dc.type |
Articles in international journals and collections |
ru_RU |
|
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