Free Engineering Simulation Tutorial - Opensource Software & Simulation Guides

Every CFD simulation is only as accurate as the fluid properties you feed it — and those properties change with temperature. Run a hot-air case with room-temperature density and your Reynolds number, heat transfer and results can all be off. Yet digging property values out of textbooks for every temperature is tedious. This free CFD Fluid Properties Calculator gives you accurate, temperature-dependent density, viscosity, thermal conductivity, specific heat and Prandtl number for air and water — with copy-ready output formatted for ANSYS Fluent and OpenFOAM incompressible simulations. Figure 1 CFD Fluid Properties Calcualtor  Table of Contents The Fluid Properties Calculator Why Properties Matter in CFD Air Properties & Temperature Water Properties & Temperature Properties for Incompressible Flow Using in ANSYS Fluent Using in OpenFOAM Quick Reference Tables Common Mistakes FAQ The Fluid Properties...

Psychrometric Calculator - Moist Air Properties (Free) Need to calculate moist-air properties quickly? This free psychrometric calculator calculates relative humidity, wet-bulb temperature, dew-point temperature, humidity ratio, moist-air enthalpy and specific volume from dry-bulb temperature plus one additional air-property input. It is designed for HVAC, air-conditioning, ventilation, building-energy and thermal-comfort calculations. Figure 1 Psychromeric calculator Calculate Moist-Air Properties from a Known Air Condition Enter dry-bulb temperature and one of relative humidity, wet-bulb temperature, dew point, humidity ratio or enthalpy. The calculator estimates the remaining properties at the selected atmospheric pressure. In This Article Psychrometric Calculator What Is Psychrometrics? Moist-Air Properties Explained Psychrometric Formulas Worked HVAC Example Heating, Cooling, Humidification and Dehumidification Dew Point and Condensation Why Atmospheric Pressure Matter...

Every processor, power transistor and LED faces the same enemy: its own heat. Let the silicon get too hot and it throttles, degrades, or dies. The heat sink is the first line of defence — and the single number that decides whether it's good enough is thermal resistance , measured in °C/W. This free Heat Sink & Fin Thermal Resistance Calculator works two ways: size a heat sink from the junction-to-ambient thermal network (what resistance you need), and estimate a plate-fin sink's resistance from its geometry, airflow and fin efficiency — the same physics data-center engineers optimise with CFD. Table of Contents The Heat Sink Calculator What Is Thermal Resistance? The Thermal Resistance Network Sizing a Heat Sink Fin Efficiency Explained Resistance from Fin Geometry Why CFD Matters Here Worked Example Common Mistakes FAQ The Heat Sink Calculator Use Size a heat sink to find the required sink-to-am...