• Created by user-59276, last updated on Oct 17, 2008 1 minute read

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Linear Flow Orifice Meter Equations

Total Flow Rate Through Weir

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$$ Q = c [h +

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s] $$

The constant of proportionality, c :

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$$ c = W k {s^{1 \over 2}} $$

The variable k :

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$$ k = 2 C_d \sqrt

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$$

Combined and substitued :

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$$ Q = W 2 C_d \sqrt

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{s^{1 \over 2}} [h +

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s] $$

Flow Through Rectangular Base of Weir

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$$ q_w =

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W C_d \sqrt

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[{{(h + s)}^{2 \over 3}} - {h^{2 \over 3}}] $$

Rectangular Base Height

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$$ s =

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\Pi_

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H_

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$$

Profile of Curved Portion

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$$ y =

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[1 -

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tan^{-1} \sqrt

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]$$

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