Bond Number Calculator
Compute the Bond number Bo = ρgL²/σ (gravity vs surface tension).
Input Data
Density
kg/m³
Gravity
m/s²
Char Length
m
Surface Tension
N/m
Results
Bo = ρgL²/σ.
3.4063
At a glance:Bo = ρ·g·L²/σ; Bo ≫ 1 means gravity dominates. Complements capillary-number and capillary-rise.
Formula
Bo = ρ·g·L² / σ.
$$\mathrm{Bo} = \dfrac{\rho\,g\,L^2}{\sigma}$$How to Use
- Enter density, g, length and σ.
- The tool returns the Bond number.
Case Studies
ρ=1000, g=9.8, L=0.01, σ=0.072
Bo ≈ 13.6 (gravity dominates).
FAQ
Bond vs capillary?
Bond uses gravity; capillary (Ca) uses viscous vs surface tension.
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References
Content review: Calculatorism Editorial Team. Results are for reference only; please refer to the relevant authorities for the official figures.