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Numerical Simulations of Unstable Flow through a Spherical Bulge in a 90-degree Asymmetrical Bend
Instituto Superior T ´ecnico, Technical University of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
Computer Modeling in Engineering & Sciences 2005, 9(2), 211-220. https://doi.org/10.3970/cmes.2005.009.211
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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.Keywords
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APA Style
Sousa, J. (2005). Numerical simulations of unstable flow through a spherical bulge in a 90-degree asymmetrical bend. Computer Modeling in Engineering & Sciences, 9(2), 211-220. https://doi.org/10.3970/cmes.2005.009.211
Vancouver Style
Sousa J. Numerical simulations of unstable flow through a spherical bulge in a 90-degree asymmetrical bend. Comput Model Eng Sci. 2005;9(2):211-220 https://doi.org/10.3970/cmes.2005.009.211
IEEE Style
J. Sousa, "Numerical Simulations of Unstable Flow through a Spherical Bulge in a 90-degree Asymmetrical Bend," Comput. Model. Eng. Sci., vol. 9, no. 2, pp. 211-220. 2005. https://doi.org/10.3970/cmes.2005.009.211
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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