ventsim.3d.newVentsim 4.8 is a significant upgrade and includes many new features and improvements to help you build better models, create more accurate simulations and save time and money. Over 50 improvements in features, stability, user interface and performance. Faster, more stable and including new features such as fire growth curves, delayed blasting and contaminant release and inclusion of dust in VentFIRE scripts. New License Server options - businesses can use their own server for improved speed and automated license checkout. Read More