Free Engineering Simulation Tutorial - Opensource Software & Simulation Guides

Water Hammer Calculator - Joukowsky Surge Pressure (Free) Free Engineering Calculator · Water Hammer · Surge Pressure · Joukowsky Equation · Pipe Flow Need to estimate water hammer or surge pressure in a pipeline? This free Water Hammer Calculator uses the Joukowsky equation to estimate the pressure rise caused by a rapid change in liquid velocity. Enter fluid density, pressure-wave speed and velocity change to calculate surge pressure, hydraulic head rise and estimated final pressure. Water hammer can occur when a flowing liquid is accelerated or decelerated rapidly. A fast valve closure, pump trip, check-valve action, emergency shutdown or sudden change in flow can generate a pressure wave that travels through the pipe. In a long pipeline, that transient event can produce a pressure rise far above normal operating pressure. Figure 1 Water hammer or Surge Pressure Calculator FREE WATER HAMMER TOOL Estimate Joukowsky Surge Pressure in Seconds Use the calculator for a fir...

Pipe Wall Thickness Calculator - Barlow's Formula (Free) Free Engineering Calculator · Pipe Sizing · Hoop Stress · Pressure Design · Barlow's Formula Need to estimate the required pipe wall thickness from internal pressure? This free Pipe Wall Thickness Calculator uses the basic Barlow's formula relationship to estimate pressure-induced hoop stress and the minimum theoretical wall thickness for a pressurized pipe. Enter the internal pressure, outside diameter, allowable stress and weld or joint efficiency to obtain a preliminary design value. Pipe wall thickness is one of the first checks in pressure piping because internal pressure creates circumferential, or hoop, stress in the pipe wall. If the wall is too thin for the design pressure and material strength, the pipe may not have an adequate pressure margin. Barlow's formula gives engineers a compact way to connect pressure, pipe diameter, allowable stress and wall thickness. Figure 1 Pipe Wall Calcula...

Too fast and your pipe screams, erodes and wastes pump energy; too slow and sediment settles and solids drop out. The velocity of fluid inside a pipe is one of the most important — and most overlooked — numbers in fluid system design. It's linked to flow rate and pipe diameter by one elegant equation, and this free pipe flow / velocity calculator lets you solve for whichever one you need: flow rate ↔ velocity ↔ diameter . Enter any two, get the third, plus a check against recommended velocity ranges. Figure 1. Flow rate (Q), velocity (V) and diameter (D) are tied together by the continuity equation Q = V × A. Know any two and you can find the third. Table of Contents The Pipe Flow / Velocity Calculator The Continuity Equation Solving Three Ways Recommended Pipe Velocities Why Velocity Matters Worked Examples Units & Conversions Common Mistakes FAQ The Pipe Flow / Velocity Calculator Pick what you want to ...