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Pattern Recognition in High Speed Schlieren Visualization at the High Enthalpy Shock Tunnel Göttingen (HEG)

Wolfram, Jeremy and Martinez Schramm, Jan (2008) Pattern Recognition in High Speed Schlieren Visualization at the High Enthalpy Shock Tunnel Göttingen (HEG). 16. DGLR/STAB Symposium, 2008-11-3 - 2008-11-04, Aachen. (Submitted)

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Abstract

Time resolved digital high speed image recording of flow properties using schlieren and shadowgraph methods have become a standard tool in today’s investigations of hypersonic flows. Postprocessing is often necessary to enhance image quality, followed by quantitative image analysis to measure important flow features. Therefore, a software has been developed allowing flexible design of evaluation workflows and a high degree of automatization. Evaluation of shock stand-off distance and shock angle in experimental visualization series at HEG can be carried out. Even force prediction based on analysis of model displacement has been realized. The tool and design considerations based on typical problems of hypersonic flow visualization are discussed. Flow image analysis processes and results using a pattern recognition approach known as Hough transformation are presented.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Pattern Recognition in High Speed Schlieren Visualization at the High Enthalpy Shock Tunnel Göttingen (HEG)
Authors:
AuthorsInstitution or Email of Authors
Wolfram, JeremyUNSPECIFIED
Martinez Schramm, JanUNSPECIFIED
Date:2008
Refereed publication:Yes
In ISI Web of Science:No
Status:Submitted
Keywords:High Enthalpy Shock Tunnel, HEG, Schlieren, Shock Waves, Hough-Transform, Visual Data Manipulator, VDM, Computer Vision, Pattern Recognition, Distributed System
Event Title:16. DGLR/STAB Symposium
Event Location:Aachen
Event Type:national Conference
Event Dates:2008-11-3 - 2008-11-04
Organizer:DGLR
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):W - Grundlagen Raumtransport - numerische Verfahren (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Dagmar Brennecke-Hosseinzadeh
Deposited On:15 Jan 2009
Last Modified:27 Apr 2009 15:43

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