The precise dynamics of disturbance energy growth and breakdown in pipe transition is a century-old unresolved problem in fluid mechanics. In this paper, we demonstrate that the mystery attributed to ...

1 Department of Physics, University Cheikh Anta DIOP-UCAD, Dakar, Senegal. 2 Department of Physics, University of Kara, Kara, Togo. A Fourier-Chebyshev Petrov-Galerkin spectral method is described for ...

Using large-scale numerical calculations, we explore the proper orthogonal decomposition of low Reynolds number turbulent pipe flow, using both the translational invariant (Fourier) method and the ...

The aim of this study is to evaluate a three-equation turbulence model applied to pipe flow. Uncertainty is approximated by comparing with published direct numerical simulation results for ...

In the reverse transition in pipe flow, turbulent flow changes to less disturbed laminar flow. The entropy of the flow appears to decrease. This study examined the reverse transition experimentally ...

Pipe flow is an emblematic configuration in fluid mechanics, the basis for describing the laminar/turbulent transition, and a widespread fluid transport mode in nature and industry. Yet, it is still ...

A new equation for accurate approximation of the Moody friction factor in the general gas-flow equation better approximates a wide range of Reynolds numbers than previously published equations. Other, ...

How much stress do pipes undergo when a liquid flows through them, and how does it depend on the degree of curvature of the pipe? Bends in pipes are different than their straight sections because, in ...