Boundary shear stress (for natural rivers)
Description
Assuming a single, well-mixed, homogeneous fluid and a single acceleration due to gravity (both are good assumptions in natural rivers, and the second is a good assumption for processes on Earth, or any planetary body with a dominant influence on the local gravitational field), the only two variables that determine the boundary shear stress are the depth and the slope. For natural streams a typical useful relationship exists
Related formulasVariables
τb | boundary shear stress (Pa) |
cunits | Unit conversion constant equal to 1 (kg/m2*s2) |
h | Depth of the flow (m) |
s | Lope (dimensionless) |