annular section

annular section

[′an·yə·lər ′sek·shən]
(engineering)
The open space between two concentric tubes, pipes, or vessels.
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References in periodicals archive ?
Firstly, they assumed that both the radial clearance and the eccentricity of the annular section are small, limiting the application of the expression (Eq.
If some sort of annular design is called for, as in a torpedo-style hot tip, your goal should be to minimize the length of the annular sections.