Where is the beveled edge located on a V notch weir?

In the design of a V notch weir, the beveled edge is located on the downstream side. This design feature is crucial because it helps to improve the accuracy of flow measurement by reducing the effects of turbulence and ensuring a smooth flow of water over the weir. When water flows over the beveled edge, it creates a sharper transition, which aids in establishing a clear and stable water surface. This characteristic of the V notch weir is especially important in situations where precise flow measurements are needed, such as in water treatment and distribution systems.

The beveled edge minimizes disturbances that could otherwise result from abrupt changes in water direction, thus improving measurement reliability. Understanding this placement is important for operators and engineers when designing and utilizing flow measurement systems in various water management applications.