Velocity and temperature data were obtained for the annulus between a rotating inner cylinder and a stationary outer cylinder. The data were obtained for air under circumstances such that appreciable variation of the transport properties and density would occur in a turbulent flow. These data make possible a test of current theories for the behavior of turbulent, variable-property flow. (Author).

A study has been made of convective heat transfer between a rotating cylinder and a stationary, concentric outer cylinder for the Taylor number range 2000 to 9000, and for rotor surface temperatures in the range 80F to 430F.

Most work performed under the present contract was described in Final Report AFOSR 3207, August 1962, (AD-407 505). This supplementary report records accomplishments since that date. In addition, salient results of the entire investigation will be presented. An interesting aspect of the present work is that it contains one of the earliest extensive uses of an interferometer to study heat transfer in turbulent flow. (Author).