equivalent orifice

equivalent orifice

[i′kwiv·ə·lənt ′ȯr·ə·fəs]
(mechanical engineering)
An expression of fan performance as the theoretical sharp-edge orifice area which would offer the same resistance to flow as the system resistance itself.
References in periodicals archive ?
01 left spring stiffness, N/mm 600 spring force at zero displacement, N 30 coefficient of viscous friction, N/(m/s) 1000 right spring rate, N/m 300000 piston diameter, mm 10 rod diameter, mm 3 left equivalent orifice diameter, mm 1.
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