Wavefront sensors for optical diagnostics in fluid mechanics: application to heated flow, turbulence, and droplet evaporation

Daniel R. Neal, Timothy J. O'Hern, John R. Torczynski, Mial E. Warren, R. Shul, Thomas S. McKechnie

Research output: Chapter in Book/Report/Conference proceedingConference contribution

28 Scopus citations

Abstract

Optical measurement techniques are extremely useful in fluid mechanics because of their non-invasive nature. However, it is often difficult to separate measurement effects due to pressure, temperature and density in real flows. Using a variation of a Shack-Hartmann wavefront sensor, we have made wavefront measurements that have extremely large dynamic range coupled with excellent sensitivity at high temporal and spatial resolution. These wavefront variations can be directly related to density perturbations in the fluid. We have examined several classes of flow including volumetrically heated gas, grid turbulence and droplet evaporation.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsSoyoung S. Cha, James D. Trolinger
PublisherPubl by Society of Photo-Optical Instrumentation Engineers
Pages194-203
Number of pages10
ISBN (Print)0819412546
StatePublished - 1993
Externally publishedYes
EventOptical Diagnostics in Fluid and Thermal Flow - San Diego, CA, USA
Duration: Jul 14 1993Jul 16 1993

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2005
ISSN (Print)0277-786X

Conference

ConferenceOptical Diagnostics in Fluid and Thermal Flow
CitySan Diego, CA, USA
Period7/14/937/16/93

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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