On the interplay of gas dynamics and the electromagnetic field in an atmospheric Ar/H2 microwave plasma torch

SYNEK, Petr, Adam OBRUSNÍK, Simon HÜBNER, Sander NIJDAM and Lenka ZAJÍČKOVÁ. On the interplay of gas dynamics and the electromagnetic field in an atmospheric Ar/H2 microwave plasma torch. PLASMA SOURCES SCIENCE & TECHNOLOGY. BRISTOL: IOP PUBLISHING LTD, 2015, vol. 24, No 2, p. 1-16. ISSN 0963-0252. doi:10.1088/0963-0252/24/2/025030.

Basic information

• Original name: On the interplay of gas dynamics and the electromagnetic field in an atmospheric Ar/H2 microwave plasma torch
• Authors: SYNEK, Petr (203 Czech Republic, guarantor, belonging to the institution), Adam OBRUSNÍK (203 Czech Republic, belonging to the institution), Simon HÜBNER (528 Netherlands), Sander NIJDAM (528 Netherlands) and Lenka ZAJÍČKOVÁ (203 Czech Republic, belonging to the institution).
• Edition: PLASMA SOURCES SCIENCE & TECHNOLOGY, BRISTOL, IOP PUBLISHING LTD, 2015, 0963-0252.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10305 Fluids and plasma physics
• Country of publisher: United Kingdom of Great Britain and Northern Ireland
• Confidentiality degree: is not subject to a state or trade secret
• WWW: URL
• Impact factor: Impact factor: 2.808
• RIV identification code: RIV/00216224:14740/15:00080747
• Organization unit: Central European Institute of Technology
• Doi: http://dx.doi.org/10.1088/0963-0252/24/2/025030
• UT WoS: 000356816200034
• Keywords in English: plasma; simulations; modelling; microwave; atmospheric pressure; argon; hydrogen
• Tags: podil, rivok
• Tags: International impact, Reviewed

Abstract

A complementary simulation and experimental study of an atmospheric pressure microwave torch operating in pure argon or argon/hydrogen mixtures is presented. The modelling part describes a numerical model coupling the gas dynamics and mixing to the electromagnetic field simulations. Since the numerical model is not fully self-consistent and requires the electron density as an input, quite extensive spatially resolved Stark broadening measurements were performed for various gas compositions and input powers. In addition, the experimental part includes Rayleigh scattering measurements, which are used for the validation of the model. The paper comments on the changes in the gas temperature and hydrogen dissociation with the gas composition and input power, showing in particular that the dependence on the gas composition is relatively strong and non-monotonic. In addition, the work provides interesting insight into the plasma sustainment mechanism by showing that the power absorption profile in the plasma has two distinct maxima: one at the nozzle tip and one further upstream.

Links

• ED1.1.00/02.0068, research and development project: Name: CEITEC - central european institute of technology
• EE2.3.30.0009, research and development project: Name: Zaměstnáním čerstvých absolventů doktorského studia k vědecké excelenci
• GAP205/10/1374, research and development project: Name: Syntéza uhlíkových nanotrubek plazmochemickou metodou a studium jejich funkčních vlastností

Investor: Czech Science Foundation