Option B3 Flashcards
Fluids and fluid dynamics
What is the formula of
calculating density?
What is the formula of
calculating Pressure?
How to determine pressure of a gas
by a manometer?
What is Buoyant force?
Buoyant force is
the upward force of a fluid
State
Archimedes’ principle
What is the relationship
between
weight of object and buoyant force?
If weight of object > buoyant force => object sinking down
If weight of object < buoyant force => object floating up
If weight of object = buoyant force => object not moving (or floating) => hydrostatic equilibrium
State
Pascal’s principle
What is
Hydrostatic equilibrium?
Define the ideal fluid
Ideal fluids will be taken to mean fluids that are incompressible and nonviscous and have steady flows
What is Streamlines?
A streamline is an imaginary line that represents the path of fluid particles
What is
The continuity equation?
State the
The Bernoulli equation
What is The Bernoulli effect?
Define
Viscosity and Viscous Drag
Viscosity is a fluid’s resistance to flow.
Viscous Drag = the frictional force present when a solid object moves through a liquid
State
Stokes’ law
State the difference in terms of the velocity of the water between laminar and turbulent flow.
In laminar flow, the velocity of the fluid is constant at any point in the fluid whereas it is not constant for turbulent flow
What is
a Laminar flow?
Laminar flow is
– a fluid moves smoothly and is predicable
- the velocity is constant at any point in the flow
- also known as streamline flow which only occurs in low flow rate
What is
a Turbulent flow?
Turbulent flow is
- a fluid moves chaotically and is hard to predict regarding its motion
- the velocity of flow is not constant
- occurs in high flow rate
What is
Reynolds numbe?
Reynolds number is a value to determine whether a flowing fluid is a laminar or a turbulent flow
What is the formula
of calculating Reynolds numbe?
