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| pressure drop on the choke,
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| chokeorifice narrowing ratio | ||||||||
| orifice diameter | ||||||||
| pipe diameter |
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The most popular engineering correlation covering various tapping arrangements is given by ISO5167:
| LaTeX Math Block | ||
|---|---|---|
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\epsilon = 1 - (0.41 + 0.35 \, \beta^4) \cdot \frac{\Delta p}{\kappa \cdot p_{out}} |
| pressure drop on the orifice | ||||
| discharge pressure | ||||
| Adiabatic Index (isentropic expansion factor) | ||||
&11 =1-(0.41+0.35~ )-.
isentropic exponent
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