Fluids

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Fluid Velocity (m/s)

Pipe Diameter (m)

Kinematic Viscosity ν (m²/s)

Common ν: Water 20°C = 1.004×10⁻⁶ · Air 20°C = 1.516×10⁻⁵ m²/s

⟨∿⟩ Fluids Reference: All calculations use SI units (Pa, m³/s, W, K). Moody friction factor uses Blasius smooth-pipe approximation. Bernoulli assumes ideal, incompressible, steady flow along a streamline.

Reynolds Number

Calculate Reynolds number for pipe flow, open channel flow, and external flow. Determine whether flow is laminar, transitional, or turbulent.