What is it about?
Some researchers have finally achieved it: they could make turbulence disappear from a high Reynolds pipe flow. However, It was not clear why and how has such an achievement been possible. The present article explains the causes that lead to the removal of turbulence. And the explanation arises directly from the equations of motion, that is, from first principles.
Featured Image
Why is it important?
Due to the intrinsic mathematical difficulty of the equations of motion for fluids, it is not frequent to see rigorous mathematical explanations of phenomena in the literature of fluid mechanics. The present article offers detailed theoretical explanations of the experiments that make turbulence disappear from pipe flow.
Perspectives
The perspectives opened by this research are too good to be true. Finally, we know how to create high Reynolds laminar pipe flows, with a much lower friction than turbulent flows. The energy savings in pumping fluids (water, oil, gas...) are going to be enormous. Big cities could have their water-supply hydraulic networks working in laminar regime, which employ a tiny fraction of the energy required by turbulent flows.
F. Javier Garcia Garcia
Universidade da Coruna
Read the Original
This page is a summary of: On the analytic explanation of experiments where turbulence vanishes in pipe flow, Journal of Fluid Mechanics, November 2022, Cambridge University Press,
DOI: 10.1017/jfm.2022.651.
You can read the full text:
Contributors
The following have contributed to this page
