Reynolds Number and Critical Velocity
The Reynolds Number, used in the annular Power Law Model calculations is calculated using equivalent viscosity
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Reynolds Number is then:
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The fluid velocity that will produce the critical Reynolds Number for given fluid properties and pipe configuration is found using:
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where: ReL = Laminar/Transitional Reynolds Number
(3470-1370n).
The Reynolds Number, used in the annular Power Law Model calculations is calculated using equivalent viscosity
:

Reynolds Number is then:
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The fluid velocity that will produce the critical Reynolds Number for given fluid properties and pipe configuration is found using:

where: ReL = Laminar/Transitional Reynolds Number
(3470-1370n).