Grashof Number Calculator
Compute the Grashof number Gr = gβΔTL³/ν² (buoyancy vs viscosity).
Input Data
Gravity
m/s²
Thermal Expansion
1/K
Temp Diff
K
Char Length
m
Kinematic Viscosity
m²/s
Results
Gr = gβΔTL³/ν².
2,650,598.4
At a glance:Gr = g·β·ΔT·L³/ν²; natural-convection analog of Re. Complements rayleigh-number and nusselt-number.
Formula
Gr = g·β·ΔT·L³ / ν².
$$\mathrm{Gr} = \dfrac{g\,\beta\,\Delta T\,L^3}{\nu^2}$$How to Use
- Enter g, β, ΔT, L and ν.
- The tool returns Gr.
Case Studies
g=9.8, β=0.003, ΔT=10, L=0.1, ν=1.5e-5
Gr ≈ 1.31e6.
FAQ
With Rayleigh?
Ra = Gr·Pr; used in Nusselt correlations.
Related Tools
References
Content review: Calculatorism Editorial Team. Results are for reference only; please refer to the relevant authorities for the official figures.