C3 - Types of Fluid Flashcards
What substances are classes as fluids?
Liquids and gases
What type of substance are liquids and gases?
Fluids
What are the features of laminar (streamlined) fluid flow?
Layers of fluid slide past each other and don’t cross. Low friction between fluid layers
What type of fluid flow has layers that slide past each other with low friction?
Laminar (streamlined) fluid flow
What are the features of turbulent fluid flow?
Layers of liquid mix and cross over. High friction between layers
What type of fluid flow has layers that cross over with high friction between layers?
Turbulent fluid flow
When a fluid flows over a vehicle where is the flow most turbulent?
At the back of the vehicle
What happens to fluid flow at the back of a moving vehicle?
It is turbulent
What do streamlined shapes do?
Reduce friction (drag)
What types of shape reduce friction (drag)?
Streamlined
How do streamlined shapes reduce friction (drag)?
By reducing the amount of turbulent flow at the back of the vehicle
Streamlined shapes reduce the amount of turbulent flow at the back of vehicles. What does this do?
Reduce drag (friction)
