Bottom Friction: Difference between revisions

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Bottom Friction

The mean (short-wave averaged) bed shear stress, $τ_{b i}$ , is calculated as

$τ_{b i} = λ_{w c} τ_{c i}$ (2-8)

where

$λ_{w c} =$ nonlinear bottom friction enhancement factor $(λ_{w c} \geq 1)$ [-]

$τ_{c} =$ current-related bed shear stress vector [Pa]

The current bed shear stress is given by

$τ_{c i} = ρ c_{b} U U_{i}$ (2-9)

where

@@ Line 8: / Line 8: @@
 ''<math>\lambda_{wc} = </math>'' nonlinear bottom friction enhancement factor ''<math> \left( \lambda_{wc} \geq 1 \right)</math>'' [-]
+''<math>\tau_c = </math>'' current-related bed shear stress vector [Pa]
+The current bed shear stress is given by
+''<math>\tau_{ci} = \rho c_b UU_i</math>''        (2-9)
+where