Investigation of nonpenetrative thermal convection using stereoscopic particle image velocimetry

Ajay K. Prasad, Ronald J. Adrian

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

6 Scopus citations

Abstract

Non-penetrative thermal convection in a large-aspect-ratio container of water has been studied using stereoscopic Particle Image Velocimetry (PIV) to measure 3D velocity vectors in planar domains. The unique aspects of this work are the application of stereoscopic PIV in highly turbulent flow with significant small-scale energy, and the application of a liquid-filled test section which requires significant corrections for aberrations. Velocity data were obtained for three different cases of non- penetrative convection, corresponding to convective velocities, w*, of 3, 4, and 5 mm/s. For each case, a sequence of about 20 pairs of stereo-photographs were recorded in a vertical plane, with sufficient time separation between photographs to ensure statistical independence at least for the turbulent motions with time-scales on the order of z*/w*. The grid-spacing of the resulting velocity fields was adequate to resolve the smallest structures in the flow.

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
Pages667-682
Number of pages16
ISBN (Print)0819412546
StatePublished - Dec 1 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

Other

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

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ASJC Scopus subject areas

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

Cite this

Prasad, A. K., & Adrian, R. J. (1993). Investigation of nonpenetrative thermal convection using stereoscopic particle image velocimetry. In S. S. Cha, & J. D. Trolinger (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (pp. 667-682). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2005). Publ by Society of Photo-Optical Instrumentation Engineers.