Turbulence at Reynolds Numbers Typical of Navy Operations
Abstract
Summary We propose a systematic study to fill the gap between existing knowledge of low Reynolds number turbulent flows to the kinds of turbulent flows encountered on full-scale Navy 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, control surfaces, and angles of attack in yaw and in pitch; 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 smooth and rough surfaces, especially pipes and flat 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. The HRTF is now being outfitted with a Magnetic Suspension Balance System (MSBS) to conduct wake studies free of support interference.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2016
- Source ID
- N000141512402
Entities
People
- Alexander Smits
Organizations
- Office of Naval Research
- Trustees of Princeton University
- United States Navy