Accession Number:

ADA048451

Title:

Vorticity Measurements Using Calibrated Vane-Vorticity Indicators and Comparison with X-Wire Data,

Descriptive Note:

Corporate Author:

ILLINOIS INST OF TECH CHICAGO

Personal Author(s):

Report Date:

1977-01-01

Pagination or Media Count:

9.0

Abstract:

Vane-type vorticity indicators of various sizes have been constructed, calibrated and used for direct and rapid measurement of local mean streamwise vorticity in several swirling flows. The dependence of their calibration factor, which relates the vane rotational speed to the local angular velocity of the fluid, on the free-stream velocity, the fluid rotational speed, and the transverse vorticity gradient was determined. When the vanes were carefully calibrated, and regularly checked and maintained, good agreement was achieved between vorticity profiles obtained using them and X-wire data. Otherwise, a vane can only be used to give an indication of vorticity. Author

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE