Fluid Mechanics for Civil and Environmental Engineers 1st. Edition by Richard M. McCuen | 9780849337376 | 0849337372 | Holooly

Fluid Mechanics for Civil and Environmental Engineers [EXP-22147]

268 SOLVED PROBLEMS

Question: 10.8

(a) A dust particle with a diameter of 0.0012 in and a specific gravity of 3.6 falls in the air (standard atmosphere at sea level, ρ = 0.0023768 slugs/ft^3 , μ= 0.37372 × 10^−6 lb-sec/ft^2 , γ = 0.076472 lb/ft^3 ), as illustrated in Figure EP 10.8a, and settles to the ground after a windstorm.

Verified Answer:

(a) In order to determine the drag force, Equation...

Question: 11.4

(Refer to Example Problem 10.17.) Air at standard atmosphere at an altitude of 25,000 ft above sea level flows at a velocity of 800 ft/sec over a prototype 1500-ft-long square shaped cylinder with a side of 6ft, as illustrated in Figure EP 11.4. A smaller model of the larger prototype is designed

Verified Answer:

(a) In order to determine the drag force on the pr...

Question: 11.12

(Refer to Example Problem 11.11.) Air at 68^◦ F flows in a prototype 1300-ft-long circular pipe with a diameter of 3 ft and an absolute pipe roughness of 0.03 ft, as illustrated in Figure EP 11.12. A smaller model of the larger prototype is designed in order to study the flow characteristics of

Verified Answer:

(a) In order to determine the pressure drop (and h...

Question: 11.9

(Refer to Example Problem 11.8.) Water at 50^◦ F flows at a velocity of 9 ft/sec over aprototype 30-ft-long streamlined hull with a width of 30 ft and a depth of 4 ft, as illustrated in Figure EP 11.9. A smaller model of the larger prototype is designed in order to study the flow characteristics of

Verified Answer:

(a) In order to determine the drag force on the pr...

Question: 11.20

A 0.25-hp prototype water impulse turbine extracts 13 ft of freely available head with a freely available discharge of 252 US gpm. The diameter of the prototype turbine runner blades is 9.5 in with a runner rotational speed of 800 rpm. A smaller model water turbine of the prototype water impulse is

Verified Answer:

(a) In order to design a homologous model water im...

Question: 11.19

A 3-hp prototype water pump is designed to deliver a total head of 140 ft at a discharge of 42 US gpm. The diameter of the prototype pump impeller blades is 8.5 in with an impeller rotational speed of 1750 rpm. A smaller model water pump of the prototype water pump is designed in order to study the

Verified Answer:

(a) In order to design a homologous model water pu...

Question: 1.38

A 300-ft^3 oxygen tank is compressed under a pressure of 500 psia and at a temperature of 40^◦ F. (a) Determine the density of the oxygen in the tank. (b) Determine the weight of the oxygen in the tank.

Verified Answer:

(a) To determine the density of the oxygen in the ...

Question: 1.39

A 69-m^3 helium tank is compressed under a pressure of 800 kN/m^2 abs and at a temperature of 10^◦ C.(a) Determine the density of the helium in the tank. (b)Determine the weight of the helium in the tank.

Verified Answer:

(a) To determine the density of the helium in the ...

Question: 2.42

A block of wood with uniform density weighs 400 N and floats in water. Its dimensions are H= 40cm by h= 40cm and b = 80 cm along the proposed axis of rotation, y as illustrated in Figure EP 2.42. (a) Determine if the floating block of wood is top heavy or bottom heavy. (b) Determine if the

Verified Answer:

(a) In order to determine if the block is top heav...

Question: 2.43

A boat weighs 500,000 N and floats in water. Its horizontal cross section (plan view) at the water line and its vertical cross section, along with the dimensions, are illustrated in Figure EP 2.43. Assume that the boat is top heavy (i.e., G is located above B). (a) Determine the buoyant force, FB

Verified Answer:

(a) In order to determine the buoyant force, [late...

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