Free Engineering Simulation Tutorial - Opensource Software & Simulation Guides

Speed a fluid up and its pressure falls; slow it down and its pressure rises. That simple, almost counter-intuitive trade-off is the heart of the Bernoulli equation — the single most useful relationship in fluid mechanics. It links pressure, velocity and elevation between any two points along a streamline, and it explains everything from how a venturi meter works to why an aircraft wing lifts. This free Bernoulli Equation Calculator solves for the unknown pressure, velocity or height between two points, with an optional head-loss term for real, frictional flow. Table of Contents The Bernoulli Calculator The Bernoulli Equation Understanding Head Assumptions & Limits Adding Head Loss Real-World Uses Worked Example Common Mistakes FAQ The Bernoulli Equation Calculator Enter the known values at point 1 and point 2, choose what to solve for, and add head loss if the flow has friction. Consistent SI units (Pa, m/s, m)...

A pressure gauge reads a few kPa across a plate in your pipe — and from that single number you can know exactly how much fluid is flowing. That's the elegant principle behind orifice plates and venturi meters , the two most common differential-pressure flow meters in industry. Squeeze the flow through a constriction, measure the pressure drop, and Bernoulli's principle gives you the flow rate. This free Orifice & Venturi Flow Meter Calculator applies the ISO 5167 equations to turn your differential-pressure reading into volumetric and mass flow — or reverse-solve the bore size you need — for both liquids and gases. Figure 1 Orifice Venturi meter Table of Contents The Flow Meter Calculator How DP Flow Meters Work The ISO 5167 Flow Equation Beta Ratio & Velocity of Approach The Discharge Coefficient Orifice vs Venturi Liquids vs Gases (Expansibility) Worked Example Common Mistakes FAQ The Flow Mete...

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 ...