The Experiments 
II. Greening Air Transport 3. Turbulence Session 2: Illustrate turbulent flow using ink
II. Greening Air Transport 3. Turbulence Session 2: Illustrate turbulent flow using inkSession 2: Illustrate turbulent flow using ink
Objective: Get a better understanding and a better visualisation of flow
Explanation:
The flow can be observed better in water.Using coloured ink the students will visualize the flow
Material:
a tank filled with water, ink, a little bottle and some forms: a ball, a cub and an airfoil.
Maximum duration:
20 minutes
Main questions to be answered
What do you think will happen with the ink?
Main activities
Fill the tank with cold water. Fill the bottle with hot water and ink. Take the bottle and place it inside the tank on the bottom of the tank. Observe what is happening with the coloured water in the bottle. You can put different forms into the water above the bottle and observe how the flow will go around them.
Conclusion / Plenary
The first few centimetres the flow is laminar and then it turns into turbulent flow.
