(a) Define (i) Dimensional homogeneity (ii) Undistorted models (iii) Reynold's model law and (iv) Scale effect in models.
Explanation
Dimensional homogeneity is a fundamental concept in fluid mechanics. Undistorted models are used to study the behavior of fluids in different geometries. Reynold's model law is used to scale up or down the results of model experiments. Scale effect in models is an important consideration when designing and interpreting model experiments.
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