A new technique for detecting shock waves and recognising the shock patterns in compressible flow solutions computed by means of shock-capturing solvers is proposed and discussed. This newly developed technique uses the Hough transform and a least squares fit to further post-process the data provided by a classical shock detection technique based on local criteria. This two-steps analysis significantly enhances the quality of the shock lines extracted from numerical solutions; moreover, it allows to correctly recognise the complex shock-wave patterns that arise when the flow solution is characterised by the presence of multiple interacting shocks.
Recognition of shock-wave patterns from shock-capturing solutions / Paciorri, Renato; Aldo, Bonfiglioli. - STAMPA. - (2012), pp. 91-96. (Intervento presentato al convegno 3rd International Symposium on Computational Modelling of Objects Represented in Images: Fundamentals, Methods and Applications, CompIMAGE 2012 tenutosi a Rome nel 5 September 2012 through 7 September 2012) [10.1201/b12753-17].
Recognition of shock-wave patterns from shock-capturing solutions
PACIORRI, Renato;
2012
Abstract
A new technique for detecting shock waves and recognising the shock patterns in compressible flow solutions computed by means of shock-capturing solvers is proposed and discussed. This newly developed technique uses the Hough transform and a least squares fit to further post-process the data provided by a classical shock detection technique based on local criteria. This two-steps analysis significantly enhances the quality of the shock lines extracted from numerical solutions; moreover, it allows to correctly recognise the complex shock-wave patterns that arise when the flow solution is characterised by the presence of multiple interacting shocks.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
