Engineering Calculator
Fluid Mechanics Calculator
Calculate fluid flow parameters including velocity, pressure, Reynolds number, and pump power
Fluid Mechanics Calculator
Apply the continuity equation (A₁V₁ = A₂V₂) to calculate flow parameters in pipes and channels.
m²
m/s
m²
m/s
m³/s
Fluid Mechanics Principles
Fundamental equations and concepts in fluid mechanics
Fundamental Equations
Continuity
A₁V₁ = A₂V₂ = Q (conservation of mass)
Bernoulli
P + ½ρV² + ρgh = constant (energy conservation)
Reynolds Number
Re = ρVD/μ = VD/ν (flow characterization)
Practical Applications
Pipe Flow
hf = f(L/D)(V²/2g), ΔP = ρghf
Pump Power
P = ρgQH/η (hydraulic power)
Orifice Flow
Q = CdA√(2gh) (discharge through openings)
Design Guidelines
• Consider pressure losses in systems
• Account for elevation changes
• Select appropriate pipe sizes
Common Fluids
• Water: ρ = 1000 kg/m³, μ = 0.001 Pa⋅s
• Air: ρ = 1.2 kg/m³, μ = 1.8×10⁻⁵ Pa⋅s
• Oil: ρ = 850 kg/m³, μ = 0.1 Pa⋅s
Applications
• Pipeline design
• Pump selection
• HVAC systems