Free Engineering Simulation Tutorial - Opensource Software & Simulation Guides

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)...

Free Engineering Calculator Fluid & Heat Transfer Properties Calculator Engineering students often need the same physical properties again and again: temperature, density, viscosity, thermal conductivity, specific heat, pressure, flow rate and many others. The problem is that the values are commonly reported in different unit systems. This fluid properties calculator combines more than 30 commonly used fluid mechanics and heat-transfer properties in one place. Select a property, enter a value, choose the input and output units, and the calculator converts the result instantly. Figure 1 Unit Convertor for Fluid and Heat Properties Contents 30+ Property Unit Conversion Calculator Properties Included Temperature and Thermophysical Properties Fluid Flow Properties Heat Transfer Properties Important Engineering Relationships Worked Example Common Conversion Mistakes Related Engineering Resources Frequently Asked Questions 30+ Fluid and Heat Transfer Propert...