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{{Equation| <math> \frac{\partial ( h U_i ) }{\partial t} + \frac{\partial (h U_i U_j )}{\partial x_j} | |||
- \epsilon_{ij3} f_c U_j h = - g h \frac{\partial \eta }{\partial x_i} | |||
- \frac{h}{\rho_0} \frac{\partial p_a }{\partial x_i} | |||
+ \frac{\partial }{\partial x_j} \biggl ( \nu_t h \frac{\partial U_i }{\partial x_j} \biggr ) | |||
+ \frac{\tau_i }{\rho} | |||
</math>|2=2}} | |||
The discretized momentum equations are | The discretized momentum equations are | ||
<math> \frac{\partial }{\partial t} \int_{A} h U_i dA | <math> \frac{\partial }{\partial t} \int_{A} h U_i dA | ||
+ \oint_{F} \frac{\partial | + \oint_{F} \biggl{ \frac{ \partial }{\partial x_j} \big[ | ||
(h U_i U_j ) | |||
- \nu_t h \frac{\partial U_i }{\partial x_j} \big) | |||
- \frac{h}{\rho_0} \frac{\partial p_a }{\partial x_i} | |||
- | |||
- \epsilon_{ij3} f_c U_j h = - g h \frac{\partial \eta }{\partial x_i} | |||
+ \frac{\tau_i }{\rho} | + \frac{\tau_i }{\rho} | ||
</math> | </math> | ||
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for <math> j=1,2 </math> | for <math> j=1,2 </math> | ||
Revision as of 00:05, 30 January 2011
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(2) |
The discretized momentum equations are
Failed to parse (syntax error): {\displaystyle \frac{\partial }{\partial t} \int_{A} h U_i dA + \oint_{F} \biggl{ \frac{ \partial }{\partial x_j} \big[ (h U_i U_j ) - \nu_t h \frac{\partial U_i }{\partial x_j} \big) - \frac{h}{\rho_0} \frac{\partial p_a }{\partial x_i} - \epsilon_{ij3} f_c U_j h = - g h \frac{\partial \eta }{\partial x_i} + \frac{\tau_i }{\rho} }
The continuity equation is discretized as
where the subscript indicates the cell face, with being the water surface elevation, is equal to the dot product of the velocity unit vector and the cell face unit vector.
The coefficient is equal to
The continuity equation is discretized as
where is the dot product of the cell face unit vector and
The depth-averaged 2-D continuity and momentum equations are given by
(1) |
for