Skip to content Skip to navigation
University of Warwick
  • Study
  • |
  • Research
  • |
  • Business
  • |
  • Alumni
  • |
  • News
  • |
  • About

University of Warwick
Publications service & WRAP

Highlight your research

  • WRAP
    • Home
    • Search WRAP
    • Browse by Warwick Author
    • Browse WRAP by Year
    • Browse WRAP by Subject
    • Browse WRAP by Department
    • Browse WRAP by Funder
    • Browse Theses by Department
  • Publications Service
    • Home
    • Search Publications Service
    • Browse by Warwick Author
    • Browse Publications service by Year
    • Browse Publications service by Subject
    • Browse Publications service by Department
    • Browse Publications service by Funder
  • Help & Advice
University of Warwick

The Library

  • Login
  • Admin

High-speed digital visualization and high-frequency automated shock tracking in supersonic flows

Tools
- Tools
+ Tools

Timmerman, B. H. (Brenda H.), Skeen, A. J., Bryanston-Cross, P., Tucker, Paul G., Jefferson-Loveday, R. J., Paduano, James and Guenette, G. R. (2008) High-speed digital visualization and high-frequency automated shock tracking in supersonic flows. Optical Engineering, Vol.47 (No.10). Article No. 103201 . doi:10.1117/1.2992621

Research output not available from this repository, contact author.
Official URL: http://dx.doi.org/10.1117/1.2992621

Request Changes to record.

Abstract

A low-cost, robust, versatile digital shadowgraph visualization system is presented that provides a fast nonintrusive diagnostic for unsteady high-speed flows. The technique is particularly designed for real-time automated tracking of shock positions, enabling high-speed active shock control. The visualization system is based on a high-intensity white LED light source combined with a CMOS-imaging sensor, providing the system with three modes of operation: (1) high-resolution overall instantaneous visualization; (2) high-resolution visualization showing spatial- temporal variations in the flow field, allowing direct identification of areas where changes occur; (3) adjustable windowed visualization at reduced resolution at high frame rate (currently up to 980 Hz) . Experimental results are presented together with numerical simulations based on the high-accuracy NTS Navier-Stokes solver and Roe's flux difference splitting method. The flow studied is an adjustable underexpanded jet flow coming from a nozzle that is placed in a counterflowing Mach-2 flow. The interaction of the two flows results in a complex shock and expansion pattern, providing a challenging configuration for the numerical flow solver. By modulating the jet, high-frequency changes are induced in the interaction pattern, allowing simulation of shock movement in a supersonic inlet. Good correspondence between measured and numerical shock position and angle isfound. (C) 2008 Society of Photo-Optical Instrumentation Engineers. [DOI: 10.1117/1.2992621]

Item Type: Journal Article
Subjects: Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Flow visualization, Aerodynamics, Supersonic, Metal oxide semiconductors, Complementary, Photography, High-speed, Compressibility
Journal or Publication Title: Optical Engineering
Publisher: S P I E - International Society for Optical Engineering
ISSN: 0091-3286
Official Date: October 2008
Dates:
DateEvent
October 2008Published
Volume: Vol.47
Number: No.10
Number of Pages: 8
Page Range: Article No. 103201
DOI: 10.1117/1.2992621
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Funder: Engineering and Physical Sciences Research Council (EPSRC), Warwick Innovative Manufacturing Research Centre (WIMRC), United States. Defense Advanced Research Projects Agency (DARPA), European Commission (EC)
Grant number: HPMFCT2000-00997 (EC), RESCM9002 (WIMRC)

Data sourced from Thomson Reuters' Web of Knowledge

Request changes or add full text files to a record

Repository staff actions (login required)

View Item View Item
twitter

Email us: wrap@warwick.ac.uk
Contact Details
About Us