Abstract: The objectives of the grant are to provide a systematic study to fill the gap between existing research on low Reynolds number turbulent flows to the kinds of turbulent flows encountered on full-scale vehicles. We are specifically interested in (1) the behavior of wakes at high Reynolds numbers with increasing complexity, varying from axisymmetric wakes, to wakes typical of submarine shapes that include the effects of a sail, fins, and control surfaces; and (2) the effects of roughness at high Reynolds numbers. We aim to gain a better understanding of complex flow interactions in wakes typical of submarine flow fields, especially wakes with concentrated regions of streamwise vorticity. We are also interested in high Reynolds number flows over rough surfaces, especially pipes and fiat plates with roughness that relate to marine surfaces. We expect these studies to lead to improved flow prediction and improved flow control. The work is performed in two unique facilities: the Superpipe and the High Reynolds number Test Facility (HRTF) that can obtain very high Reynolds numbers on a laboratory scale using compressed air as the working fluid.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Final technical rept. 1 Oct 2006-31 Oct 2008 |
| Pages: |
10 |
| Report Date: |
07-May-2009 |
| Contract Number: |
N00014-07-1-0111 N000140710111 |
| Report Number: |
A254994 |
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