CMS-Flow:Bottom Friction: Difference between revisions
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(Created page with '== Bottom Friction == '''Flow without Waves''' In the situation without waves, the bottom shear stress is calculated based on the quadratic formula math \tau_m = \tau_…') |
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In the situation without waves, the bottom shear stress is calculated based on the quadratic formula | In the situation without waves, the bottom shear stress is calculated based on the quadratic formula | ||
math \tau_m = \tau_c = c_b|U|U /math | <math> \tau_m = \tau_c = \rho c_b |U| U </math> | ||
where math c_b /math is the bottom friction coefficient, math U/math is the depth-averaged current velocity. | where <math> c_b </math> is the bottom friction coefficient, <math> U</math> is the depth-averaged current velocity. | ||
'''Flow with Waves''' | '''Flow with Waves''' | ||
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In the case with waves, the bottom friction is calculated as | In the case with waves, the bottom friction is calculated as | ||
math \tau_m = \tau_c | <math> \tau_m = \gamma \tau_c </math> | ||
Revision as of 19:23, 5 May 2010
Bottom Friction
Flow without Waves
In the situation without waves, the bottom shear stress is calculated based on the quadratic formula
where is the bottom friction coefficient, is the depth-averaged current velocity.
Flow with Waves
In the case with waves, the bottom friction is calculated as
