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.
36 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.