Example engineering calculations
Worked, unit-aware calculation worksheets across structural, mechanical, electrical and more. Open any example into your own workspace to edit and reuse. New to Calculeaf? Start with your first worksheet or the examples guide.
56 examples found
Pressure Drop in a Pipe
Calculating the pressure drop in a pipe
Reynolds Number for Pipe Flow
Reynolds number for flow in a circular pipe to classify laminar versus turbulent flow.
Darcy–Weisbach Pipe Head Loss
Friction head loss along a pipe run using the Darcy–Weisbach equation.
Pipe Flow Velocity from Flow Rate
Mean flow velocity in a circular pipe from the volumetric flow rate and diameter.
Volumetric Flow Rate from Velocity
Volumetric flow rate in a circular pipe from the mean velocity and pipe diameter.
Torricelli Discharge Velocity
Ideal efflux velocity of fluid leaving an opening under a head of liquid.
Orifice Flow Rate
Discharge through a sharp-edged orifice using a discharge coefficient.
Pump Hydraulic Power
Hydraulic power a pump must deliver to lift a flow rate through a given head.
Pipe Wall Thickness (Barlow’s Formula)
Minimum pipe wall thickness to contain internal pressure using Barlow’s formula.
Buoyancy Force (Archimedes)
Upward buoyant force on a submerged body from the weight of fluid it displaces.
Aerodynamic Drag Force
Drag force on a body moving through a fluid from its drag coefficient, speed and frontal area.
Terminal Velocity of a Falling Body
Steady fall speed of a body when aerodynamic drag balances its weight.
Hydrostatic Pressure at Depth
Gauge pressure at a given depth in a static fluid.
Mach Number
Mach number of a flow from its speed and the local speed of sound.
Continuity: Velocity Change
Velocity after a change of pipe area from the continuity equation.
Hydraulic Radius of a Channel
Hydraulic radius of a flow cross-section from its area and wetted perimeter.
Froude Number
Froude number of an open-channel or marine flow.
Rectangular Weir Flow
Discharge over a sharp-crested rectangular weir.
Pump Affinity Law (Flow vs Speed)
New pump flow rate when its speed changes, via the affinity laws.
Pipe Friction Pressure Drop
Frictional pressure drop along a pipe from the Darcy–Weisbach equation.
Capillary Rise
Height a liquid rises in a fine tube by surface tension.
Stokes Drag on a Sphere
Viscous drag on a small sphere moving slowly through a fluid.
Pitot Tube Velocity
Flow velocity from the dynamic pressure measured by a Pitot tube.
Manometer Pressure Difference
Pressure difference indicated by the height of liquid in a manometer.