An immersed boundary method, similar to the one used by Kim et al. [1] was developed to implement a varying wall topography into an existing DNS code for pipe flow. Validation using a semi-analytical solution and numerical results showed that the method yields accurate results for laminar flow. Four simulations for turbulent flow where performed, each with a different wall geometry. Wall topographies varying in the axial direction and topographies varying in the azimuthal direction have been considered. Time-averaged as well as instantaneous results are presented for the different geometries. The results for turbulent flow are consistent with the expected physical behaviour. They confirm the hypothesis that flow in the outer layer is largely unaffected by the wall topography.
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ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels
August 1–5, 2010
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4948-4
PROCEEDINGS PAPER
Direct Numerical Simulation of Turbulent Flows in Rough Pipes Using an Immersed Boundary Method With a Spectral Representation of the Roughness Topography Available to Purchase
A. T. van Nimwegen,
A. T. van Nimwegen
Delft University of Technology, Delft, The Netherlands
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L. M. Portela
L. M. Portela
Delft University of Technology, Delft, The Netherlands
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A. T. van Nimwegen
Delft University of Technology, Delft, The Netherlands
L. M. Portela
Delft University of Technology, Delft, The Netherlands
Paper No:
FEDSM-ICNMM2010-30886, pp. 2415-2431; 17 pages
Published Online:
March 1, 2011
Citation
van Nimwegen, AT, & Portela, LM. "Direct Numerical Simulation of Turbulent Flows in Rough Pipes Using an Immersed Boundary Method With a Spectral Representation of the Roughness Topography." Proceedings of the ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting: Volume 1, Symposia – Parts A, B, and C. Montreal, Quebec, Canada. August 1–5, 2010. pp. 2415-2431. ASME. https://doi.org/10.1115/FEDSM-ICNMM2010-30886
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