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22 calculators · Fluid Mechanics
Fluid Mechanics
22 calculatorsDomain overview →
Fluid Properties & Hydrostatics
- Density & Specific Gravity CalculatorDensity from mass and volume, specific gravity against a reference fluid, and specific weight γ = ρg.
- Hydrostatic Pressure CalculatorPressure at a depth in a static fluid, p = p_surface + ρgh, or between two elevations, with the pressure reference stated explicitly.
- Pressure Head CalculatorPressure expressed as a head of a chosen fluid, h = p/(ρg), and the pressure a given head represents.
- Manometer CalculatorPressure difference along a multi-fluid manometer path, built from ordered up and down moves through fluids of stated density.
- Hydrostatic Force CalculatorResultant pressure force on a plane submerged surface, F = ρg h_c A, for a rectangle or a circle at any inclination.
- Center of Pressure CalculatorDepth at which the hydrostatic resultant acts on a plane submerged surface, h_cp = h_c + I_G sin²θ/(A h_c).
- Buoyant Force CalculatorArchimedes buoyant force F_B = ρgV on a displaced volume, with an optional comparison against the body weight.
Conservation & Energy
- Continuity Equation CalculatorSteady incompressible continuity along one stream, A₁V₁ = A₂V₂, solved for either area, either speed or the common flow rate.
- Flow Rate & Velocity CalculatorQ = A V for one cross-section, from a diameter, a rectangle or a stated area, with the mass flow rate when a density is given.
- Bernoulli Equation CalculatorThe extended energy equation H₁ + h_p − h_t − h_L = H₂ between two stations, solved for a pressure, a speed, an elevation or a required head.
- Dynamic Pressure CalculatorDynamic pressure q = ½ρV² of a moving fluid, the speed it implies, and the velocity head it corresponds to.
- Pump Head & Power CalculatorHydraulic power P = ρgQh_p delivered to the fluid, the shaft power an efficiency implies, or the head or flow a stated power supports.
Internal Pipe Flow
- Reynolds Number CalculatorRe = ρVD_h/μ for internal flow, from a kinematic or a dynamic viscosity, with the laminar, transitional or turbulent regime it names.
- Hydraulic Diameter CalculatorD_h = 4A/P for a duct of any shape, with direct, circular and rectangular forms, for use in the Reynolds number and the Darcy–Weisbach loss.
- Darcy Friction Factor CalculatorThe Darcy friction factor f_D from f_D = 64/Re in laminar flow or the Colebrook correlation in turbulent flow, with the Fanning counterpart stated explicitly.
- Darcy–Weisbach Pressure Drop CalculatorMajor head loss h_f = f_D (L/D_h) V²/(2g) along a pipe run and the pressure drop Δp = ρgh_f it represents.
- Minor Loss CalculatorLocal head loss h_m = K V²/(2g) of a fitting, bend or valve, and the pressure drop that loss represents.
Momentum
Flow Measurement & Basic External Flow
- Venturi Meter CalculatorDischarge from a measured differential across a Venturi, or the differential a stated discharge produces, with the throat ratio, elevations and a prescribed discharge coefficient.
- Pitot Tube CalculatorSpeed magnitude from the stagnation-minus-static pressure difference, V = sqrt(2Δp/ρ), for steady incompressible flow along the stagnation streamline.
- Orifice & Torricelli CalculatorEfflux under a head: the Torricelli velocity sqrt(2gh) and the orifice discharge a prescribed discharge coefficient and area give it.
- Drag Force CalculatorF_D = ½ ρ V_rel² C_D A_ref with a prescribed drag coefficient, reported as a magnitude and, when a direction is stated, as a force opposing the relative motion.