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Fluid is the higher level designation for liquids (example: water = incompressible) and gases (example: air = compressible).
Why is there such a difference in behaviour?
Fluids can change their shape easily, depending on the available space; solids cannot.
Pour a liquid (heavier than air) in a vessel and it will cover the bottom of that vessel up to a certain height (its surface level) that depends on the amount of liquid poured.
A gas (usually lighter than air) will fill all the available space and will show no surface.
Gases are compressible, liquids are not.
To demonstrate that, fill one cylinder with a gas (air will do for this example) and another one with water. Close the cylinders with a piston that can move downward in the cylinder. When the free space (the volume) inside the cylinder is reduced, its content will get pressurized. Note the difference: The piston in the water cylinder will not move, while the air cylinder can make quite some travel, depending on how much force you apply. So apparently the gas is compressible, water is not.
This different behaviour can be explained by looking at the molecules. Gas molecules move around freely with lots of space between them. That space will shrink when the available vessel volume for the gas is reduced, resulting in an increase of the pressure the gas exerts on the walls of its vessel. More molecules in a given volume also means an increase in the density of the gas.
The water molecules are already in intimate contact with each other, so there is no space that could be reduced when putting the liquid under pressure. Hence it is incompressible.
For these reasons a protective cushion would rather be filled with air than with water.
When you hit the water cushion it would feel rather hard, while the air cushion would feel more resilient.
What else can I help you with?
What is the difference between compressible and in-compressible fluids giving examples of the fluids found in human body?
compressible fluid changes its volume when external pressure is applied and in-compressible fluid does not change its volume due to external pressure
What are newtanion and non newtanion fluids?
Newtonian fluids have a constant viscosity regardless of the applied shear rate, while non-Newtonian fluids have a variable viscosity that changes with the applied shear rate. Examples of Newtonian fluids include water and most oils, while examples of non-Newtonian fluids include ketchup and toothpaste.
Is butane gas compressible or non compressible?
Butane gas is compressible. It can be compressed into a smaller volume at higher pressures.
Name of gases that are compressible?
All gases are compressible (even all fluids and solids are, though much lesser), so there is no special name needed for this group because it is not special.
What is continuity equation for compressible fluids?
The continuity equation for compressible fluids states that the rate of change of density (ρ) in a fluid is equal to -∇⋅(ρu), where ρ is density, u is velocity, and ∇⋅ is the divergence operator. This equation is derived from the conservation of mass principle in fluid dynamics.
What is the difference between compressible and in-compressible fluids giving examples of the fluids found in human body?
compressible fluid changes its volume when external pressure is applied and in-compressible fluid does not change its volume due to external pressure
Water is a non compssible fluid?
Fluids include liquids and gasses. Liquids are not compressible. Gasses are compressible. Water is a liquid and it not compressible.
How is the compressible Bernoulli equation applied in fluid dynamics to analyze the flow of compressible fluids?
The compressible Bernoulli equation is used in fluid dynamics to analyze the flow of compressible fluids by accounting for changes in fluid density due to compression. This equation considers the effects of fluid velocity, pressure, and density on the flow of compressible fluids, allowing for a more accurate analysis of fluid behavior in various conditions.
What is the definition of an incompressible fluid and how does it differ from compressible fluids?
An incompressible fluid is a substance that does not change its volume when subjected to pressure. In contrast, compressible fluids can change their volume when pressure is applied.
What are newtanion and non newtanion fluids?
Newtonian fluids have a constant viscosity regardless of the applied shear rate, while non-Newtonian fluids have a variable viscosity that changes with the applied shear rate. Examples of Newtonian fluids include water and most oils, while examples of non-Newtonian fluids include ketchup and toothpaste.
What is compressible fluids?
A fluid which is reduced in volume by an increase in pressure.
Is butane gas compressible or non compressible?
Butane gas is compressible. It can be compressed into a smaller volume at higher pressures.
Name of gases that are compressible?
All gases are compressible (even all fluids and solids are, though much lesser), so there is no special name needed for this group because it is not special.
What are examples of non fluids?
Some examples of non-fluids are solids (such as ice, wood, and metal) and gases (such as air, oxygen, and carbon dioxide). These substances do not flow and have definite shapes or volumes.
What is an incompressible fluid and how does it differ from compressible fluids?
An incompressible fluid is a substance that does not change its volume when pressure is applied. This means that its density remains constant. In contrast, compressible fluids can change their volume when pressure is applied, leading to changes in density.
What is continuity equation for compressible fluids?
The continuity equation for compressible fluids states that the rate of change of density (ρ) in a fluid is equal to -∇⋅(ρu), where ρ is density, u is velocity, and ∇⋅ is the divergence operator. This equation is derived from the conservation of mass principle in fluid dynamics.
Is a fluid a gas and a liquid?
Yes, fluids can exist as both gases and liquids. In general, gases have low density, are compressible, and fill the entire volume of their container, while liquids have higher density, are not easily compressible, and have a definite volume but take the shape of their container.
