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Balachandar, S. Robichaux, Joseph H. 2015-09-25T21:12:55Z 2015-09-25T21:12:55Z 10000-01-01 1997 1997 It is observed that three-dimensional transition process for square cylinder is similar to that of a circular cylinder. Most notably there is a long wave-length three-dimensional disturbance which becomes unstable at a Reynolds number about 170, followed by the appearance of a short wavelength instability. However, this stability analysis also predicts a intermediate wavenumber disturbance which has a shedding frequency twice that of the base flow. This intermediate wavelength mode has not been observed in analysis of the circular cylinder. The presence of this new intermediate wavelength mode may explain the complicated behavior observed in direct numerical simulations of the non-linear three-dimensional Navier-Stokes equations at low Reynolds numbers. Made available in DSpace on 2015-09-25T21:12:55Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9812755.pdf: 9180141 bytes, checksum: f9354184145332e2d1c5492596cb4de0 (MD5) Previous issue date: 1997 Embargo set by: Seth Robbins for item 85241 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 207 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1997. http://hdl.handle.net/2142/83960 (MiAaPQ)AAI9812755 eng Engineering, Mechanical Study of Three-Dimensional Vortex Shedding in the Wake of a Square Cylinder text Mechanical Engineering Mechanical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.