The Correlation Between Surface Temperature and Subsurface Velocity During Evaporative Convection

Abstract

The cross-correlation between surface temperature and subsurface velocity is presented for water undergoing evaporative convection. The surface temperature measurements were obtained via quantitative infrared imaging, and the velocity measurements were obtained using a two-component laser Doppler velocimetry (LDV) system. The water surface was covered with a surfactant monolayer, which did not impede evaporation. The largest measured correlation coefficient was 0.375. Correlation coefficients obtained after shifting the velocity and temperature time traces with respect to each other revealed a peak in the correlation coefficient very close to a zero time shift. The significance of these results and their implications for the remote sensing of underwater objects via infrared imaging are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2001
Accession Number
ADA573945

Entities

People

  • Geoffrey B. Smith
  • J. R. Saylor
  • Karen A. Flack
  • Michael P. Schultz

Organizations

  • United States Naval Academy

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Boundary Layer
  • Coefficients
  • Convection
  • Cross Correlation
  • Detection
  • Detectors
  • Evaporation
  • Fluid Mechanics
  • Heat Flux
  • Layers
  • Measurement
  • Monomolecular Films
  • Remote Sensing
  • Stratified Fluids
  • Surface Active Substances
  • Surface Temperature
  • United States Naval Academy

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Fluid Dynamics.
  • Thin Film Deposition Science.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers