Free Engineering Simulation Tutorial - Opensource Software & Simulation Guides

ENERGY STORAGE CALCULATOR Battery Storage Calculator for kWh, Autonomy and Backup Sizing Need to know how much battery storage a home, office, laboratory, telecom site or small facility needs during an outage? This free battery storage calculator converts load power and backup time into a practical battery capacity estimate, while accounting for depth of discharge, system efficiency, reserve margin and DC voltage. Quick answer: battery backup sizing starts with the energy your loads need during the outage. Multiply the average load by the required autonomy hours, then divide by the fraction of the battery you can safely use. Real designs also need efficiency losses, reserve capacity, peak-power checks, temperature effects, battery chemistry, inverter limits and manufacturer data. Figure 1 Battery Storge Calculator In this guide Battery storage calculator What battery storage sizing means Battery sizing formula Why depth of discharge matters Worked battery ...

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...