@Article{cmes.2005.009.211,
AUTHOR = {J.M.M. Sousa},
TITLE = {Numerical Simulations of Unstable Flow through a Spherical Bulge in a 90-degree Asymmetrical Bend},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {9},
YEAR = {2005},
NUMBER = {2},
PAGES = {211--220},
URL = {http://www.techscience.com/CMES/v9n2/29608},
ISSN = {1526-1506},
ABSTRACT = {Time-dependent numerical simulations of the flow through a spherical bulge in a 90-degree asymmetrical bend have been performed for Reynolds numbers in the range 100-400. The present results have demonstrated that the flow reaches asymptotically steady, symmetrical solutions for Reynolds numbers up to 300, whereas a value of 400 for this parameter leads to unsteadiness. The computed flow behavior at this higher Reynolds number has shown to be characterized by an intermittent transition between small-amplitude, irregular oscillations and large-amplitude bursts occurring at a low frequency. In addition, the unsteady flow was asymmetrical and exhibited swirl switching.},
DOI = {10.3970/cmes.2005.009.211}
}