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US07700183B2 Closed cell surfaces with enhanced drag-reduction properties 有权
封闭的细胞表面具有增强的减阻性能

Closed cell surfaces with enhanced drag-reduction properties
Abstract:
An apparatus, comprising a plurality of closed cells disposed on a surface of a substrate. Each of the closed cells has at least one dimension that is less than about 1 millimeter and are configured to hold a medium therein. The apparatus also comprises a foam that contacts the closed cells. The foam has fluid walls that include a surfactant, and bubbles of the foam layer are filled with the medium.
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