Section: Fluid Mechanics | Marks: 2
Prototype of a dam spillway ( a structure used for controlled release of water from the dam) has characteristic length of 20m and characteristic velocity of 2 m/s. A small model is constructed by keeping Froude number same for dynamic similarity between the prototype and the model. What is the minimum length-scale ratio between prototype and the model such that the minimum Reynolds' number for the model is 100? The density of water is 1000 kg/m3 and viscosity is 10-3 Pa-s.
- A. 1.8 10-4
- B. 1 10-4
- C. 1.8 10-3
- D. 9.1 10-4
Answer: A. 1.8 10-4