Please identify what you consider an incompressible system.Signature said:State postulate for a simple compressible system is completely specified by two independent intensive properties.
But what about state postulate for a incompressible system.
Why it is not so important?
just considering only liquids specifically waterChestermiller said:Please identify what you consider an incompressible system.
Liquid water is compressible, so it still takes specification of two intensive properties to define its thermodynamic equilibrium state. See the phase diagram for water.Signature said:just considering only liquids specifically water
Chestermiller said:Liquid water is compressible, so it still takes specification of two intensive properties to define its thermodynamic equilibrium state. See the phase diagram for water.
It's certainly mentioned in thermodynamics books. Look up Poynting Correction.Signature said:Let it be, but, in most cases especially fluid mechanics we treat water as an incompressible liquid. Anyway if there is an incompressible substance, what are the basic properties which are required to completely specify its state. Why no textbooks did mention about the state postulate of incompressible substances?
I'm sure you are aware that there is no such thing as a completely incompressible liquid.Signature said:But Poynting correction is for real gases. But I want to know about incompressible substance.
Ok sir. Then what about the state postulate for solidsChestermiller said:It's certainly mentioned in thermodynamics books. Look up Poynting Correction.
Chet
How can we define the state of solidsSignature said:Ok sir. Then what about the state postulate for solids
The state postulate for incompressible substances states that the density of a substance remains constant regardless of changes in pressure or temperature. This means that the volume of the substance will also remain constant.
The state postulate for incompressible substances is significant because it allows for the simplification of equations used to describe the behavior of incompressible substances. It also allows for the use of simpler and more accurate calculations in engineering and physics applications.
No, the state postulate only applies to incompressible substances. This means that the substance must have a constant density regardless of changes in pressure or temperature. Examples of incompressible substances include liquids and solids.
The state postulate is related to the ideal gas law in that it is a special case of the ideal gas law. The ideal gas law assumes that the gas is compressible, while the state postulate assumes that the substance is incompressible. Both laws are used to describe the behavior of substances in different states.
Some common examples of incompressible substances include water, oil, and metals. These substances have a constant density and volume even when subjected to changes in pressure or temperature. This property is often utilized in hydraulic systems and other engineering applications.