The momentum equations for a rotating shallow homogeneous fluid with a free upper surface (i.e. the shallow water equations) may be written as Əh Du Dt Dv Dt = +fv-g Əh ду = -fu-g- (1) where u(x, y, t), v(x, y, t) are the velocities on the free surface, and h(x, y, t) is the depth of the free surface. (a) Rewrite (1) and (2) by expanding the total derivative operator D Ə Ә Ə +u- +v Dt Ət əx ду du = (5 + 1) = − (5 + 1) (² Dt (2) (b) Use the two equations you developed in Part(a) to derive the evolution equation for $+f, where = Qu. In other words, show that dy Əv + əx ду (3) being careful to explain the steps. [Hint: start by deriving the equation for and then use the fact that the Coriolis parameter f = f(y) only.]

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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The momentum equations for a rotating shallow homogeneous fluid with a free upper
surface (i.e. the shallow water equations) may be written as
Du
Dt
Dv
Dt
Əh
дх
Əh
ду
= +fv-g
for (+ f, where =
=
=
-fu-g-
where u(x, y, t), v(x, y, t) are the velocities on the free surface, and h(x, y, t) is the depth
of the free surface.
(a) Rewrite (1) and (2) by expanding the total derivative operator
D Ə
Ə
= +2= +v
Dt Ət əx ду
(b) Use the two equations you developed in Part(a) to derive the evolution equation
Əv
- Oy. In other words, show that
dy
(1)
(2)
?u Əv
+
дх ду
{ (S + ƒ ) = − ( 5 + £ ) ( ²
Dt
(3)
being careful to explain the steps. [Hint: start by deriving the equation for and
then use the fact that the Coriolis parameter f = f(y) only.]
Transcribed Image Text:The momentum equations for a rotating shallow homogeneous fluid with a free upper surface (i.e. the shallow water equations) may be written as Du Dt Dv Dt Əh дх Əh ду = +fv-g for (+ f, where = = = -fu-g- where u(x, y, t), v(x, y, t) are the velocities on the free surface, and h(x, y, t) is the depth of the free surface. (a) Rewrite (1) and (2) by expanding the total derivative operator D Ə Ə = +2= +v Dt Ət əx ду (b) Use the two equations you developed in Part(a) to derive the evolution equation Əv - Oy. In other words, show that dy (1) (2) ?u Əv + дх ду { (S + ƒ ) = − ( 5 + £ ) ( ² Dt (3) being careful to explain the steps. [Hint: start by deriving the equation for and then use the fact that the Coriolis parameter f = f(y) only.]
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