Repeat Ex. 15.1 for the 3-dimensional laminar wake behind a sphere.

Data from Exercises 15.1.

We explore the structure of the wake behind the cylinder when the Reynolds number is high enough that the flow is turbulent. For comparison, here we compute the wake’s structure at lower Reynolds numbers, when the wake is laminar.

This computation is instructive: using order-of-magnitude estimates first, followed by detailed calculations, it illustrates the power of momentum conservation. It is our first encounter with the velocity field in a wake.