Question

Question 3 (20marks) (a) What do you understand by the term "Dynamic Similarity (b) The drag force F on a body of characteristic dimension D, depends on velocity u, fluid coefficient of dynamic viscosity n, density t and bulk modulus K. (2marks) tu u (14 marks) By means of dimensional analysis show that Fo eD'u K (c) A specimen of length 1.5m is placed in test equipment where water flows past it at a speed of 4m/sec. Caleulate the corresponding speed for the prototype of 1.2m (4marks) Assume : The prototype and the specimen are dynamically similar

Answer 1

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