Accession Number:

ADA339233

Title:

Full Field Surface Shear Stress Measurements Using Liquid Crystals

Descriptive Note:

Final rept.

Corporate Author:

SURREY UNIV GUILDFORD (UNITED KINGDOM)DEPT OF CIVIL ENGINEERING

Personal Author(s):

Report Date:

1994-01-01

Pagination or Media Count:

56.0

Abstract:

Surface shear stress measurement is of fundamental importance in aerodynamics for studying laminar to turbulent transition, surface vortical structures, drag determination and is a necessary diagnostic requirement for not only large aerodynamic surfaces but also for rotodynamic machinery. Currently, there are many methods for determining the shear stress at the surface ranging from velocity profiles to heated elements and small surface obstacles, but all of them rely upon point measurement of the shear stress value. The advantage of having a methodology to determine the full-field shear stress is, therefore, of immense value to the aerodynamic community. It is this particular area that is to be addressed by reporting the work carried out to determine the use of liquid crystals for shear stress measurements at high Mach number.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE