Consider flow along a 1000 m overland flow element with n=0.2. 1. Rewrite the finite difference approximation so it…

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Consider flow along a 1000 m overland flow element with n=0.2.

1. Rewrite the finite difference approximation so it can be used to model overland

flow.

2. If the element is divided into 5 grid units, what is 4x?

3. What is the celerity at a representative depth of 3 cm?

4. What maximum timestep can be used to solve this flow?

5. The design storm intensity [mm/hr] is given by the normal distribution below. Find

the values ie,i and ie,i+1 for ti+1=1.5 hr.

ie(t) = 10 exp

(t-1.5)2)

0.25

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1 Rewriting the finite difference approximation for overland flow The finite difference approximation for overland flow can be rewritten as follows h

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