roblem: a ship of (120 m) long moves through a fresh water (ρ = 1000 Kg/m3 , µ = 1.14*10-3 Pa.s ) at a speed of 32 Km/hr. A (1:100) model of this ship is to be tested in a towing basin (laboratory) containing a liquid of relative density 0.92. For complete dynamic similarity between model and prototype, calculate the following: 1. The velocity of the model, 2. The viscosity must the liquid (model) have, 3. What drag force on the ship corresponds to a model drag of (9 N).

roblem: a ship of (120 m) long moves through a fresh water (ρ = 1000 Kg/m3 , µ = 1.14*10-3 Pa.s ) at a speed of 32 Km/hr. A (1:100) model of this ship is to be tested in a towing basin (laboratory) containing a liquid of relative density 0.92. For complete dynamic similarity between model and prototype, calculate the following: 1. The velocity of the model, 2. The viscosity must the liquid (model) have, 3. What drag force on the ship corresponds to a model drag of (9 N).