The effect of free stream turbulence level on the flow and heat transfer in the entrance region of an annulus

M. R.F. Heikal; P. J. Walklate; A. P. Hatton

doi:10.1016/0017-9310(77)90174-0

The effect of free stream turbulence level on the flow and heat transfer in the entrance region of an annulus

M. R.F. Heikal, P. J. Walklate, A. P. Hatton

Advanced Engineering Centre

Research output: Contribution to journal › Article › peer-review

Abstract

Measurements were made of turbulence characteristics, mean flow and heat-transfer parameters in the entrance region of an annulus of radius ratio 0.25 over a range of Reynolds numbers from 0.13 × 10⁵ to 1.9 × 10⁵. Tests were carried out with and without a turbulence promoter which gave a large enhancement of free stream turbulence at inlet. The results were compared using a prediction method based on the two equation turbulence model. Good agreement was obtained both in the entrance region and the fully developed situation and with and without the turbulence promoter providing proper values of the initial turbulence energy and dissipation rate were used.

Original language	English
Pages (from-to)	763-771
Number of pages	9
Journal	International Journal of Heat and Mass Transfer
Volume	20
Issue number	7
DOIs	https://doi.org/10.1016/0017-9310(77)90174-0
Publication status	Published - 1 Jan 1977

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AU - Hatton, A. P.

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The effect of free stream turbulence level on the flow and heat transfer in the entrance region of an annulus

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