MEAN VELOCITY DISTRIBUTION IN THE OUTER LAYER OF A TURBULENT BOUNDARY LAYER

reportActive / Technical Report | Accession Number: AD0403496 | Open PDF

Abstract:

The intermittent-eddy-viscosity hypothesis is proposed for the outer layer in a turbulent boundary layer flow, and it assumes an alternate appearance of zero eddy viscosity in the non turbulent region and of a constant eddy viscosity in the turbulent region. The equation of motion is simplified by assuming the velocity defect law and that the velocity defect is small compared with the free stream velocity. With these as assumptions the distributions of mean velocity and shear stress in the outer layer of a turbulent boundary layer on a flat plate for constant pressure sure are obtained using the intermittency factor measured by Klebanoff. The calculated results show good agreement with those measured.

Author(s):
Matsui, Tatsuya
Author Organization(s):
MISSISSIPPI STATE UNIV MISSISSIPPI STATE
Descriptive Note:
Research rept.
Supplementary Note:
DOI: 10.21236/AD0403496
Pagination:
0047

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
RR-42
Contract/Grant Number(s):
NONR-978-03
Monitor Series:
ONR
 Subject Terms
Joint Capability Areas:
JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_1.2.6_Concepts; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_5.3_Planning; JCA_5_Command and Control; JCA_1.2.3_Educating
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*TURBULENT BOUNDARY LAYER, *BOUNDARY LAYER FLOW, SHEAR PROPERTIES, VELOCITY, SHEAR STRESSES, FLUID FLOW, VISCOSITY, EQUATIONS OF MOTION, EDDIES(FLUID MECHANICS)
Field(s)/Group(s):
Fluid Mechanics
Report Date:
1963 Jan 19