Answer:
see explaination
Explanation:
Part a) Width of bay at Potomac River:
Given Data:
· Actual Width at Potomac River = 30 miles
· Bay Model Length Ratio Lr = 1/1000
In fluid mechanics models of real structures are prepared in simulation so that they can be analyzed accurately. A model is known to have simulation if model carries same geometric, kinematic and dynamic properties at a small scale.
Length of any part in model = Actual length x Lr
Hence,
Model Width of bay at Potomac River = 30 x 1/1000 = 0.03 miles
Since 1 mile = 5280 ft
Model Width of bay at Potomac River = 0.03 x 5280 = 158.4 ft
Part b) Model Length of bay bridge in model:
Given Data:
· Actual Length of bay bridge = 4.3 miles
· Bay Model Length Ratio Lr = 1/1000
Model Length = Actual Length x Lr = 4.3 x 1/1000 = 0.0043 miles
Since 1 mile = 5280 ft
Model Length in feet = 0.0043 x 5280 = 22.704 ft
Part c) Model Length of bay bridge in model:
Given Data:
· Model Area = 8 acre
· Bay Model Length Ratio Lr = 1/1000
Model Area = Actual Area x Lr x Lr
8 Model Area :: Actual Area =- (Lp)2 2 = 8,000,000 acre 1000
Since 1 square mile = 640 acre,
Actual Area in square miles = 8,000,000/640 = 12,500 square miles
Part d) Average and maximum depth of model:
Given Data:
· Actual Average depth = 28 ft
· Actual Maximum depth = 174 ft
· Bay Model Length Ratio Lr = 1/1000
Model average depth = Actual average depth x Lr = 28 x 1/1000 = 0.028 feet
Since 1 ft = 12 inch
Model average depth in inch = 0.028 x 12 = 0.336 in
Model maximum depth = Actual maximum depth x Lr = 174 x 1/1000 = 0.174 feet
Since 1 ft = 12 inch
Model maximum depth in inch = 0.174 x 12 = 2.088 in
