For the laminar flow of water over a sphere, the drag coefficient C F is defined as C F = F / (ρU 2 D 2 ), where F is the drag force, ρ is the fluid density, U is the fluid velocity and D is the diameter of the sphere. The density of water is 1000 kg/m 3 . When the diameter of the sphere is 100 mm and the fluid velocity is 2 m/s, the drag coefficient is 0.5. If water now flows over another sphere of diameter 200 mm under dynamically similar conditions, the drag force (in N) on this sphere is ________.

GATE Mechanical Engineering (ME) 2017 Shift 2 Solved Paper

Question : 51 of 65

Marks: +1, -0

For the laminar flow of water over a sphere, the drag coefficient C_F is defined as C_F = F / (ρU²D²), where F is the drag force, ρ is the fluid density, U is the fluid velocity and D is the diameter of the sphere. The density of water is 1000 kg/m³. When the diameter of the sphere is 100 mm and the fluid velocity is 2 m/s, the drag coefficient is 0.5. If water now flows over another sphere of diameter 200 mm under dynamically similar conditions, the drag force (in N) on this sphere is ________.

Your Answer:

Validate

Go to Question:

Prev Question

Next Question