A weir is an obstruction, designed and calibrated to measure the rate of open-channel flows. The flow depth correlates with the rate of flow. Flow modeling with Fluent's computational fluid dynamics (CFD) software helps you tackle your environmental flow problems in the most efficient and cost-effective way. The added insight and understanding gained from flow modeling gives you confidence in your design proposals, avoiding the added costs of oversizing and overspecification, while reducing risk.

The flow over a rectangular weir is depicted, colored by velocity magnitude