Question

S6. A submarine of diameter H, velocity v, moves through water of density ρ and If Df is the drag force on the submarine, then it is known dynamic viscosity that a law of the following form applies μ. for some function G, and where DF/(pv2H2), WH/μ are dimensionless quantities You are not required to derive this formula. Engineers wish to determine the drag on a full size prototype when it is run at v-10 km hr1. To this end, they build a physically similar th size model. At what speed should they run the model in order to mimic the behaviour of the prototype going at 10 km hr1? How woulod they then predict the drag on the prototype? 10

Answer 1

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