Main Page | See live article | Alphabetical index The Boundary layer effect is the field region in which all changes occur in the flow pattern. The boundary layer distorts surrounding nonviscous flow. It is a phenonomen of viscous forces. This effect is related to the Leidenfrost effect and the Reynolds number. This effect is exploited in the Tesla turbine. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.