VELOCITY DISTRIBUTIONS IN THE WAKE OF SPHERES

Authors
  1. Lahaye, C.
  2. Jean, L.
  3. Doyle, H.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
Hypersonic data measured with the spark and electrostatic probe techniques show excellent agreement. Data obtained with the schlieren technique show appreciably lower velocity. This is due to the fact that the technique measures an average velocity across the wake and is possibly biased to measure the edge velocity because of the wake density distribution. The supersonic data show appreciably lower velocity in the intermediate wake region and coincide with hypersonic data past about 1000 body diameters. Asymptotic -two-thirds power law decay is obtained from a distance between 1000 and 1500 body diameters for high Mach number data and from about 500 body diameters for low Mach number data.
Report Number
REPR-50/70 —
Date of publication
15 Aug 1970
Number of Pages
3
Reprinted from
AIAA J, vol 8, no 8, 1970, p1521-1523
DSTKIM No
71-07955
CANDIS No
11501
Format(s):
Hardcopy;Originator's fiche received by DSIS

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