As anyone who has experienced turbulence knows, its onset and departure are abrupt, and how long it lasts seems to be unpredictable. Fast flowing fluids are always turbulent, but at slower speeds the ...

Fluid flows can take one of two forms: well-ordered 'laminar' or highly disordered 'turbulent' motion. Although everyday experience shows that laminar motion in simple shear flows as in pipes or ...

If one looks at many practical fluid flows, either around bodies (flow of air over an airplane wing) or through conduits, (flow through pipes), the problem of turbulence presents itself in almost ...

We have found that low levels of helium injection near the leading edge stabilizes the turbulent boundary layer, apparently causing a reverse transition to laminar flow to take place. These results ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 112, No. 31 (August 4, 2015), pp. 9518-9523 (6 pages) The stability of the plane Poiseuille flow is analyzed using ...

Mention the word “turbulence” and you might conjure up images of bumpy flights, stormy weather, and choppy ocean or river currents. For many, turbulence is a fact of daily life, yet it is also one of ...

One of the first things most people do in the morning is turn on a tap in the bathroom. Provided we are not too sleepy, we cannot fail to notice what is often considered to be the greatest unsolved ...

Russian researchers are exploring the use of laminar flow to improve the aerodynamic efficiency of nacelles for the planned Aviadvigatel PD-35 engine. The PD-35 is a higher-thrust evolution of the ...

Physicists have developed a theoretical understanding of laminar-turbulent transition that explains the lifetime of turbulent flows and an unexpected analogy with the behavior of an ecosystem on the ...