Analysis of De-Laval nozzle designs employed for plasma figuring of surfaces

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dc.contributor.authorYu, Nan
dc.contributor.authorJourdain, Renaud
dc.contributor.authorGourma, Mustapha
dc.contributor.authorShore, Paul
dc.date.accessioned2016-06-13T14:10:16Z
dc.date.available2016-06-13T14:10:16Z
dc.date.issued2016-02-27
dc.description.abstractPlasma figuring is a dwell time fabrication process that uses a locally delivered chemical reaction through means of an inductively coupled plasma (ICP) torch to correct surface figure errors. This paper presents two investigations for a high temperature jet (5000 K) that is used in the context of the plasma figuring process. Firstly, an investigation focuses on the aerodynamic properties of this jet that streamed through the plasma torch De-Laval nozzle and impinged optical surfaces. Secondly, the work highlights quantitatively the effects of changing the distance between the processed surface and nozzle outlet. In both investigations, results of numerical models and experiments were correlated. The authors’ modelling approach is based on computational fluid dynamics (CFD). The model is specifically created for this harsh environment. Designated areas of interests in the model domain are the nozzle convergent-divergent and the impinged substrate regions. Strong correlations are highlighted between the gas flow velocity near the surface and material removal footprint profiles. In conclusion, the CFD model supports the optimization of an ICP torch design to fulfil the demand for the correction of ultra-precision surfaces.en_UK
dc.identifier.citationNan Yu, Renaud Jourdain, Mustapha Gourma, Paul Shore. Analysis of De-Laval nozzle designs employed for plasma figuring of surfaces. The International Journal of Advanced Manufacturing Technology, October 2016, Volume 87, Issue 1, pp 735–745en_UK
dc.identifier.issn0268-3768
dc.identifier.urihttp://dx.doi.org/10.1007/s00170-016-8502-y
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/9968
dc.language.isoenen_UK
dc.publisherSpringeren_UK
dc.rightsThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Attribution 4.0 International (CC BY 4.0) You are free to: Share — copy and redistribute the material in any medium or format, Adapt — remix, transform, and build upon the material for any purpose, even commercially. The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms: Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Information: No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
dc.subjectPlasma figuringen_UK
dc.subjectInductively coupled plasmaen_UK
dc.subjectComputational fluid dynamicsen_UK
dc.subjectMaterial removal footprinten_UK
dc.titleAnalysis of De-Laval nozzle designs employed for plasma figuring of surfacesen_UK
dc.typeArticleen_UK

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