Experiments in Fluids

, 54:1539 | Cite as

Single- and dual-band collection toluene PLIF thermometry in supersonic flows

  • Victor A. Miller
  • Mirko Gamba
  • M. Godfrey Mungal
  • Ronald K. Hanson
Research Article
Part of the following topical collections:
  1. Application of Laser Techniques to Fluid Mechanics 2012


Toluene PLIF has been applied to image temperature in supersonic flowfields containing shock waves. Single- and dual-camera imaging schemes with a single excitation wavelength (266 nm) are presented, and the dual-camera scheme is optimized for imaging temperature from 300 to 900 K. The single-camera technique is implemented to verify the diagnostic and image temperature in uniform pressure, uniformly seeded flowfields; calibration is done using the signal ratio measured across an oblique shock wave of known Mach number. The dual-camera technique utilizes the redshift of toluene fluorescence with increasing temperature for temperature imaging in non-uniform pressure and temperature flowfields. Both single- and dual-camera techniques are verified and demonstrated by imaging the flow behind normal shock waves and oblique shock waves, and the dual-camera technique is further extended to image temperature in the non-uniform pressure and temperature field behind a bow shock. Good agreement is observed between the measured and expected temperature distributions calculated from ideal shock relations or CFD solutions. The accuracy of each technique is also evaluated; for dual-camera thermometry, SNR in temperature ranging from 25 at 300 K to 15 at 900 K is observed in single-shot temperature images.


Mach Number Supersonic Flow Oblique Shock Incident Shock Wave Expansion Tube 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This paper is based upon work supported by the Department of Energy under the Predictive Science Academic Alliance Program (PSAAP) at Stanford University, award number DE-FC52-08NA28614. This work is also supported by the Air Force Office of Scientific Research (AFOSR). The authors would also like to thank Jon Koch, Wieland Koban, and Christof Schulz for the toluene fluorescence spectra data they graciously provided. Additionally, Victor A. Miller is supported by the Claudia and William Coleman Foundation Stanford Graduate Fellowship.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Victor A. Miller
    • 1
  • Mirko Gamba
    • 2
  • M. Godfrey Mungal
    • 1
    • 3
  • Ronald K. Hanson
    • 1
  1. 1.Department of Mechanical EngineeringStanford UniversityStanfordUSA
  2. 2.Department of Aerospace EngineeringThe University of MichiganAnn ArborUSA
  3. 3.Department of EngineeringSanta Clara UniversitySanta ClaraUSA

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