Reynolds Number for Gas
Reynolds Number for Gas Formula |
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\( Re_g \;=\; 20,100 \; ( SG_g \; Q \;/\; d \; \eta ) \) (Reynolds Number for Gas) \( SG_g \;=\; Re_g \; d \; \eta \;/\; 20,100 \; Q \) \( Q \;=\; Re_g \; d \; \eta \;/\; 20,100 \; SG \) \( d \;=\; SG_g \; Q \; 20,100 \;/\; Re_g \; \eta \) \( \eta \;=\; SG_g \; Q \; 20,100 \;/\; Re_g \; d \) |
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| Symbol | English | Metric |
| \( Re_g \) = Reynolds number | \( dimensionless \) | \( dimensionless \) |
| \( SG_g \) = gas specific gravity relative to water (water = 1) | \( dimensionless \) | \( dimensionless \) |
| \( Q \) = gas flow rate | \(ft^3\;/\;sec\) | \(m^3\;/\;s\) |
| \( d \) = pipe inside diameter | \( in\) | \( mm \) |
| \( \eta \) (Greek symbol eta) = gas viscosity | \(lbf - sec\;/\;ft^2\) | \(Pa-s\) |
