The unsteady flow through normal triangular tube arrays is simulated applying the Cloud-in-Element method. The scheme realizes time-stepping via a Langrangian vortex method using random-walk to model diffusion in the flow. The vortex particle velocities are computed on a fixed unstructured grid at each time step. Zero normal velocity on solid boundaries is enforced by a source panel method and zero slip is achieved by introducing vorticity into the flow at each time step. Simulations have been carried out for normal triangular tube arryas with pitch ratios of 1.32, 1.61, 2.08, 2.63 at Reynolds numbers of 1000, 3000, 5000 and 10000. Single vortex shedding frequencies have been observed for the smaller pitch ratios while two Strouhal numbers are obtained for the sparse arrays. This is consistent with experimental data in the literature. Also the overall flow structures were captured successfully.
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ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference
July 23–27, 2006
Vancouver, BC, Canada
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4755-1
PROCEEDINGS PAPER
Numerical Simulation of Vortex Shedding in Normal Triangular Tube Arrays
Bjo¨rn Selent,
Bjo¨rn Selent
Trinity College-Dublin, Dublin, Ireland
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Craig Meskell
Craig Meskell
Trinity College-Dublin, Dublin, Ireland
Search for other works by this author on:
Bjo¨rn Selent
Trinity College-Dublin, Dublin, Ireland
Craig Meskell
Trinity College-Dublin, Dublin, Ireland
Paper No:
PVP2006-ICPVT-11-93862, pp. 401-409; 9 pages
Published Online:
July 23, 2008
Citation
Selent, B, & Meskell, C. "Numerical Simulation of Vortex Shedding in Normal Triangular Tube Arrays." Proceedings of the ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. Volume 4: Fluid Structure Interaction, Parts A and B. Vancouver, BC, Canada. July 23–27, 2006. pp. 401-409. ASME. https://doi.org/10.1115/PVP2006-ICPVT-11-93862
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