Mechanisms of Force and Moment Generation by the Flow Over Oscillating Rectangular Cylinders
Abstract
The key goals of this project may be summarized as follows: 1) To establish the galloping instability characteristics of sharp-corner rectangular cross-section cylinders with different side ratios (i.e. chord to thickness ratios c/d) in the range 1?c/d?3, and Reynolds number 1,000-10,000,using measurements of the aerodynamic load on the cylinder at different angles of attack. 2) To investigate the effect of the rectangles corner radius (r/d) and surface topology on galloping instability characteristics of the cylinders; 3) To identify cases of interest based on the outcome of parts 1 and 2, and study the aerodynamics load of these cases under dynamic (forced-oscillation) conditions; 4) To connect the observed aerodynamic load behavior, and galloping instability characteristics, under static and dynamic conditions to the underlying flow physics. This will be accomplished using Molecular Tagging Velocimetry measurements of the boundary layer resolved velocity profiles along the models surface and the cross-stream profiles in the wake.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 31, 2021
- Accession Number
- AD1204371
Entities
People
- Ahmed Naguib
Organizations
- Michigan State University