Drag Reduction via Phase Randomization in Turbulent Pipe Flow

Tugluk, Ozan
Tarman, Hakan I.
In this study, possibility of reducing drag in turbulent pipe flow via phase randomization is investigated. Phase randomization is a passive drag reduction mechanism, the main idea behind which is, reduction in drag can be obtained via distrupting the wave-like structures present in the flow. To facilitate the investigation flow in a circular cylindrical pipe is simulated numerically. DNS (direct numerical simulation) approach is used with a solenoidal spectral formulation, hence the continuity equation is automatically satisfied (Tugluk and Tarman, Acta Mech 223(5): 921-935, 2012). Simulations are performed for flow driven by a constant mass flux, at a bulk Reynolds number (Re) of 4900. Legendre polynomials are used in constructing the solenoidal basis functions employed in the numerical method.
European Conference on Numerical Mathematics and Advanced Applications (ENUMATH)


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Citation Formats
O. Tugluk and H. I. Tarman, “Drag Reduction via Phase Randomization in Turbulent Pipe Flow,” METU, Ankara Turkey, 2015, vol. 112, p. 463, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65161.