Types of Flow
Laminar & Turbulent Flow
Laminar Flow
Car
This car is designed for speed. To reduce eddies, the car is aerodynamic. This car will go faster than a truck, bus, etc.
Bicycle
As shown in the picture, the bicycle cuts through the wind (lines). For the bicycle to move faster, the person on it has to bend down in order to reduce turbulent flow.
Airplane
To reduce the usage of fuel, planes are designed to move fast. In the picture, the nose of the airplane goes on a diagonal instead of it being flat.
Turbulent Flow
Golf Ball
This diagram shows that the dents in the golf ball create turbulent flow because the air gets trapped in the dents of the ball.
Water
The water in a river / lake / stream hits a solid surface, causing it to bounce off and create rough waves.
Car
The airflow in this car is laminar, but, when the air reaches the spoiler, it causes it to create eddies which can slow the car down.