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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.
Dahlia Miller
Examples of compressible fluids include gases like air and steam, while examples of incompressible fluids include liquids such as water and oil. Compressible fluids change volume when pressure is applied, while incompressible fluids maintain a constant volume under pressure.
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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.
Name of gases that are compressible?
Some examples of compressible gases include air, carbon dioxide, nitrogen, and helium. These gases can be compressed into a smaller volume under pressure.
Is butane gas compressible or non compressible?
Butane gas is compressible. It can be compressed into a smaller volume at higher pressures.
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.
What is compressible fluids?
A fluid which is reduced in volume by an increase in pressure.
Name of gases that are compressible?
Some examples of compressible gases include air, carbon dioxide, nitrogen, and helium. These gases can be compressed into a smaller volume under pressure.
Is butane gas compressible or non compressible?
Butane gas is compressible. It can be compressed into a smaller volume at higher pressures.
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.
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.
What is a non Newton fluid?
A non-Newtonian fluid is a fluid whose viscosity changes under stress or deformation. Unlike Newtonian fluids, such as water or air, non-Newtonian fluids do not follow Newton's law of viscosity. Examples include ketchup, custard, and quicksand.
What has the author K Stewartson written?
K. Stewartson has written: 'The theory of laminar boundary layers in compressible fluids' 'The boundary layer'
Why gas and liquid behave similarly?
They are both FLUIDS, and basically follow the same Laws of Physics. The biggest difference is that Liquids are NOT Compressible.
What are the examples of non conservative forces?
Examples of non-conservative forces include friction, air resistance, tension in a moving rope, and drag force in fluids. These forces do work that depends on the path taken, leading to a loss of mechanical energy in a system.
What are examples of fluids?
A fluid is a substance which can flow, so some examples of fluids would be coffee, tap water, and steam.
