Date of download: 12/17/2017 Copyright © ASME. All rights reserved. From: Periodic Fluid Flow and Heat Transfer in a Square Cavity Due to an Insulated or Isothermal Rotating Cylinder J. Heat Transfer. 2009;131(11):111701-111701-11. doi:10.1115/1.3154620 Figure Legend: Comparison of the temperature contours for (a) steady rotating circle, (b) rotating square, and (c) rotating triangle, with Reynolds numbers of 111 (top), 44 for circle, 74 for square and triangle (middle), 6 for circle, 12 for square, and 31 for triangle (bottom) at the end of a cycle (contour level increment of 0.05)