These pressure fluctuations are composed of two parts, a turbulent component and a component induced by the wind blowing over the wavy surface.
It is of course still open to question whether or not the interface itself should be regarded as the wavy wall.
The wavy wall comprised the latter 4 ft. of the floor of the test section.
There are different mechanisms of the transition from stratified to wavy flow regimes in two-layer flows.
Attempt to maintain a constant pressure while the effector is moved across a wavy surface.
The flows which the oil companies call lubricated are wavy core flows, not perfect core-annular flows.
The flow field is no longer wavy in character, but this seems to be the only agreement with the inviscid theory.
The nuclear envelope has a smooth internal lamina and a wavy external one.
