RT Journal Article
T1 Turbulence suppression by cardiac-cycle-inspired driving of pipe flow.
A1 Scarselli, Davide
A1 López-Alonso, José Manuel
A1 Varshney, Atul
A1 Hof, Bjoern
K1 Sistema cardiovascular - Propiedades mecánicas
K1 Biomecánica
AB Flows through pipes and channels are, in practice, almost always turbulent, and the multiscale eddying motion is responsible for a major part of the encountered friction losses and pumping costs1. Conversely, for pulsatile flows, in particular for aortic blood flow, turbulence levels remain low despite relatively large peak velocities. For aortic blood flow, high turbulence levels are intolerable as they would damage the shear-sensitive endothelial cell layer. Here we show that turbulence in ordinary pipe flow is diminished if the flow is driven in a pulsatile mode that incorporates all the key features of the cardiac waveform. At Reynolds numbers comparable to those of aortic blood flow, turbulence is largely inhibited, whereas at much higher speeds, the turbulent drag is reduced by more than 25%. This specific operation mode is more efficient when compared with steady driving, which is the present situation for virtually all fluid transport processes ranging from heating circuits to water, gas and oil pipelines.
PB Nature Publishing Group UK
YR 2023
FD 2023-09-06
LK https://hdl.handle.net/10630/27559
UL https://hdl.handle.net/10630/27559
LA eng
NO Scarselli, D., Lopez, J.M., Varshney, A. et al. Turbulence suppression by cardiac-cycle-inspired driving of pipe flow. Nature 621, 71–74 (2023). https://doi.org/10.1038/s41586-023-06399-5
NO grant 189662962 of the Simons foundation, grant 075-15-2019-1893  de la Austrian Science Fund, y el grant I4188-N30, de  Deutsche Forschungsgemeinschaft research unit FOR 2688
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026