@inproceedings{6b64d74f4dc94cc7940b5ed5dd806065,
title = "CFD Analysis of an enhanced nozzle designed for plasma figuring of large optical surfaces",
abstract = "For addressing the correction of Mid Spatial Frequency (MSF) errors on metre scale optical surfaces induced by sub aperture figuring process, a new generation of non-contact plasma based surface figuring tools has been created at Cranfield University. In this context, this paper presents an investigation that focuses on novel enhanced nozzles that were created for a Radio Frequency (RF) Inductively Coupled Plasma (ICP) torch. The characteristics of plasma jet delivered by prototype nozzle and a selected enhanced nozzle are compared using an in-house created CFD model. The enhanced nozzle design is based on the results previously obtained throughout a numerical analysis that enabled to identify the key design aspects of these nozzles. This enhanced nozzle is predicted to provide 12.5% smaller footprint and 15.5% higher temperature.",
keywords = "De-laval nozzle, Energy beam, Material removal footprint, MSF, Optical fabrication, Plasma jet, Surface figuring",
author = "Nan Yu and Renaud Jourdain and Mustapha Gourma and Paul Shore",
note = "Funding Information: This work was supported by the UK EPSRC under grant EP/I033491/1, the McKeown Foundation and the Centre for Innovative Manufacturing in Ultra-Precision.; 16th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2016 ; Conference date: 30-05-2016 Through 03-06-2016",
year = "2016",
month = jun,
day = "3",
language = "English",
series = "Proceedings of the 16th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2016",
publisher = "euspen",
editor = "P. Bointon and Richard Leach and N. Southon",
booktitle = "Proceedings of the 16th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2016",
}