Important Questions - Unit III: Dimensional Analysis and Model Studies

 1) What are the methods of dimensional analysis? Describe the Rayleigh's method for dimensional analysis

2) Describe the Bucking ham's л theorem for dimensional analysis.

3) What do you mean by repeating variables? How are the repeating variables selected for dimensional analysis.

4) Define the following non-dimensional numbers.

(i) Reynold's number

(ii) Froude's number

(iii) Mach's number.

What are their significances for fluid flow problem.

5) Explain the different types of similarities. 

6) Give a note the term scale ratio.

7) What are the different similarities which should exist between models and prototypes. 

8) Find the values of following by the Reynolds model law.

(i) Acceleration scale ratio

(ii) Force scale ratio

(iii) Discharge scale ratio.

9) Discus about the various types of dimensionless numbers, and state its applications.

10) What are the similarities between the model and prototype? Mansion the applications of model testing? 

11) Explain about hydraulic models - Notify its merits and demerits.