Streamsurface

In fluid dynamics a '''stream surface''' is a surface across which no flow occurs. A stream surface may be one of two types:

* A boundary-type stream surface coincides with the impermeable boundary of a physical object other than the fluid itself. The object may be rigid or flexible, and it may be mobile or immobile. Examples include the wall of a fluid-filled channel or pipe, the wall of a rigid buoy drifting in a water body, and the wall of a balloon floating in the atmosphere.

* An internal stream surface does not coincide with a physical object other than the fluid. Fluid flows on either side of the surface, but does not cross it.

In scientific visualization a '''stream surface''' is the 3D generalization of a streamline. It is the union of all streamlines seeded densely on a curve. Like a streamline, a stream surface is used to visualize flows – three-dimensional flows in this case. Specifically, it is "the locus of an infinite set of such curves <nowiki>[streamlines]</nowiki>, rooted at every point along a continuous originating line segment."<ref>{{cite book | url=http://dl.acm.org/citation.cfm?id=949718 | title=Constructing stream surfaces in steady 3D vector fields | publisher=IEEE Computer Society Press Los Alamitos, CA, USA | author=Hultquist, J. P. M. | year=1992 | pages=171–178 | isbn=978-0-8186-2896-2}}</ref>

==References== <references />

Category:Numerical function drawing