A long-standing controversy about whether the motions within a typical astrophysical disk of gas are stable or unstable has resurfaced. The answer has profound significance for our understanding of ...

For macroscopic flows of water or air the Reynolds number is much larger than unity; the standard type of flow is therefore turbulent. A typical Reynolds number for a person walking is . For large ...

The Laplace transform is used to determine two forms of the exact solution for the unsteady, isothermal, one-dimensional plane Couette flow of an incompressible dipolar fluid set in motion by the ...

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 ...