Accession Number:

AD0676883

Title:

TURBULENCE IN AN UNBOUNDED, UNIFORM-SHEAR FLOW: A COMPUTER ANALYSIS

Descriptive Note:

Corporate Author:

NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CA

Personal Author(s):

Report Date:

1968-05-07

Pagination or Media Count:

172.0

Abstract:

Fluid turbulence is of crucial significance in many problems of scientific and technical importance. Current developments in computer technology offer the possibilities of solving the fundamental equations of turbulent flow in a way never before possible. In order to accomplish this aim, however, it is first necessary to formulate the essential theoretical concepts in a suitable manner. The report summarizes the progress achieved to date in this connection. Various essential basic equations are derived, but the emphasis is as much on fundamental concepts as on mathematical details. More specifically, a method is established for the computer simulation of the detailed stationary turbulence in a uniform shear flow. The results obtainable in this way are far more comprehensive than any which could reasonably be obtained by physical experiment. The data generated represent fundamental information which may be subsequently analyzed to establish overall phenomenological characteristics of the turbulence. The concepts in the report should provide a sound basis for a systematic, sustained and productive research plan. They have already been successfully applied to a computer program which is now going into operation. Results of a typical computer run are included and illustrate qualitative agreement with theoretical predictions. Author

Subject Categories:

  • Explosions
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE