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Numerical Hydraulics – Assignment 3 Solution Fall 2017

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Numerical Hydraulics - Assignment 3 Solution

Question 1

Fig. 1: WSE for both 1D and 2D simulations for a discharge of 200 m3/s.

Fig. 2: WSE for both 1D and 2D simulations for a discharge of 300 m3/s.

Numerical Hydraulics – Assignment 3 Solution Fall 2017

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Fig. 3: Velocity for both 1D and 2D simulations for a discharge of 200 m3/s.

Fig. 4: Velocity for both 1D and 2D simulations for a discharge of 300 m3/s.

Numerical Hydraulics – Assignment 3 Solution Fall 2017

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Fig. 5: Froude number for the 1D simulations for a discharge of 200 m3/s.

Fig. 6: Froude number for the 1D simulations for a discharge of 200 m3/s.

Numerical Hydraulics – Assignment 3 Solution Fall 2017

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Question 2

Tab. 1: Minimum and maximum flow depth for both 1D and 2D simulations.

Simulation Min flow depth1 [m] Max flow depth2 [m]

HEC-RAS 1D 1.09 2.84

BASEMENT 1D 0.98 2.86

HEC-RAS 2D 1.22 3.25

BASEMENT 2D 0.997 2.87

1 Minimum flow depth occur at a discharge of 200 m3/s

2 Maximum flow depth occur at a discharge of 300 m3/s

Question 3

Tab. 2: Minimum and maximum flow along the bridge pier for both 1D and 2D

simulations for a discharge of 200 m3/s.

Simulation Min flow depth1 [m] Max flow depth2 [m]

HEC-RAS 1D 1.73 1.80

BASEMENT 1D 1.74 1.80

HEC-RAS 2D 1.82 1.96

BASEMENT 2D 1.76 1.83

Tab. 3: Minimum and maximum flow along the bridge pier for both 1D and 2D

simulations for a discharge of 300 m3/s.

Simulation Min flow depth1 [m] Max flow depth2 [m]

HEC-RAS 1D 2.39 2.47

BASEMENT 1D 2.41 2.47

HEC-RAS 2D 2.48 2.65

BASEMENT 2D 2.49 2.56

Numerical Hydraulics – Assignment 3 Solution Fall 2017

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Question 4

Fig. 7: Flow depth of the BASEMENT 2D simulation for a discharge of 200 m3/s.

Fig. 8: Flow depth of the HEC-RAS 2D simulation for a discharge of 200 m3/s.

Numerical Hydraulics – Assignment 3 Solution Fall 2017

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Fig. 9: Flow depth of the Basement 2D simulation for a discharge of 300 m3/s.

Fig. 10: Flow depth of the HEC-RAS 2D simulation for a discharge of 300 m3/s.

Numerical Hydraulics – Assignment 3 Solution Fall 2017

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Fig. 11: Velocity of the BASEMENT 2D simulation for a discharge of 200 m3/s.

Fig. 12: Velocity of the HEC-RAS 2D simulation for a discharge of 200 m3/s.

Numerical Hydraulics – Assignment 3 Solution Fall 2017

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Fig. 13: Velocity of the BASEMENT 2D simulation for a discharge of 300 m3/s.

Fig. 14: Velocity of the BASEMENT 2D simulation for a discharge of 300 m3/s.