Accession Number:

AD0684759

Title:

THE SPECTRUM OF TEMPERATURE FLUCTUATIONS IN TURBULENT FLOW,

Descriptive Note:

Corporate Author:

DEFENCE RESEARCH ESTABLISHMENT PACIFIC VICTORIA (BRITISH COLUMBIA)

Report Date:

1968-06-28

Pagination or Media Count:

21.0

Abstract:

Temperature and velocity fluctuations have been recorded in the open sea and in a tidal channel, and power spectra have been determined from the records. The one-dimensional spectra of temperature fluctuations are found to have an inertial subrange. At larger wave-numbers the data can be fitted by Batchelors spectrum function for the viscous-convective range. The spectra are inconsistent with the form proposed by Pao for the vicsous-convective range. Estimates are given for the constants in Batchelors spectrum function, but these depend upon knowledge of the rate of dissipation of kinetic energy, which is determined from the velocity spectra. There is doubt about the validity of some of the velocity spectra, and in other cases there is reason to suspect that the turbulence is not locally isotropic. Author

Subject Categories:

  • Physical and Dynamic Oceanography
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE