Free Engineering Simulation Tutorial - Opensource Software & Simulation Guides

Add a fin to a hot surface and you give heat more room to escape. That's the whole idea behind extended surfaces — the fins on an engine, a heat sink, or a radiator tube. But a fin isn't a free lunch: because heat has to conduct along it, the tip runs cooler than the base and does less work. This free Fin Heat Transfer Rate Calculator computes the actual heat dissipated (Q) by a rectangular or pin fin, plus its efficiency and effectiveness , from geometry, conductivity, convection and temperatures. Figure 1 Fin Heat Trasnfer Calculator Table of Contents The Fin Heat Transfer Calculator What Is a Fin? The Fin Equations Efficiency vs Effectiveness Design Guidelines Worked Example Common Mistakes FAQ The Fin Heat Transfer Rate Calculator Pick a fin type, enter its geometry, material conductivity, the convection coefficient and the base/fluid temperatures. Get the per-fin heat rate, efficiency and effectiveness (ad...

Why does a metal spoon heat up almost instantly in hot soup while a wooden one stays cool? The answer isn't just conductivity — it's thermal diffusivity , the property that decides how fast a material responds to a temperature change. It bundles conductivity, density and specific heat into a single number that governs all transient (time-dependent) heat conduction. This free Thermal Diffusivity Calculator computes α = k/(ρc p ) instantly — or back-solves any one of the three properties — with a handy materials reference table. Figure 1 Thermal Diffusivity Calculator Table of Contents The Thermal Diffusivity Calculator What Is Thermal Diffusivity? The Formula Diffusivity vs Conductivity Role in Transient Conduction Typical Values Worked Example Common Mistakes FAQ The Thermal Diffusivity Calculator Enter thermal conductivity, density and specific heat to get α — or pick a different unknown to back-solve. Load ...

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)...