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The forecast equation for mean wind in a turbulent flow is: U_i/t + U_j U_i/x_j = delta_i3 g +
f_c epsilon_ij3 U_j - 1/p P/x_i + v ^2 U_i/x^2_j u'_i u'_j/x_j Name each term, and give its
physical interpretation.
Solution
solution
A is storage of mean momentum
B is advection of mean momentum by the mean wind
C is gravity to act in the vertical direction only
D is the Coriolis effect due to the earth’s rotation
E is the mean pressure gradient forces
F is the effect of viscous stress on the mean motions
G is the effect of Reynolds stress on the mean motions (also called the divergence of turbulent
momentum flux)

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