Interface

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Interface

</dt>
1. A common boundary between two parts of a system, whether material or nonmaterial. </dd>
2. Specifically, in a rocket vehicle or other mechanical assembly, a common boundary between two components. See mating. </dd>
3. Specifically, in fluid dynamics, a surface separating two fluids across which there is a discontinuity of some fluid property such as density or velocity or of some derivative of these properties in a direction normal to the interface. </dd>
The equations of motion do not apply at the interface but are replaced by the boundary conditions. [[/a>|/a> ]]

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use