Module 8: Flow at low and high Reynolds numbers
  Lecture 28: Examples on drag
 
 
Examples on drag
 

Example 1:  A large container 360 m long, 70 m wide and 25 m deep is being dragged in sea at a constant speed of 10 m/s. Calculate power required to drag such container. The temperature of sea water is .

 
(Fig. 28a)
As an approximation, the tank can be modeled as a flat plate of length L and width