🔢 Dimensionless Numbers Calculator
Calculate essential dimensionless parameters for heat transfer and fluid mechanics analysis.
🌀 Reynolds Number (Re)
Re = ρ·V·L / μ = V·L / ν
—Inertial / Viscous
🔥 Nusselt Number (Nu)
Nu = h·L / k
—Convection / Conduction
🌊 Prandtl Number (Pr)
Pr = μ·Cp / k = ν / α
—Momentum / Thermal diffusivity
⬆️ Grashof Number (Gr)
Gr = g·β·ΔT·L³ / ν²
—Buoyancy / Viscous
🌡️ Rayleigh Number (Ra)
Ra = Gr × Pr = g·β·ΔT·L³ / (ν·α)
—Natural convection strength
🚀 Mach Number (Ma)
Ma = V / a = V / √(γ·R·T)
—Flow / Sound speed
🧊 Biot Number (Bi)
Bi = h·L_c / k_solid
—Surface / Internal resistance
⏱️ Fourier Number (Fo)
Fo = α·t / L²
—Dimensionless time