CVEN 3313 Chapter Notes - Chapter 1: Pressure Measurement, Perfect Gas, Ideal Gas Law
24 Jan 2017
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Document Summary
The broad subject of fluid mechanics can be generally subdivided into fluid statics and fluid dynamics. Different fluids have different properties that relate to fluid behavior. For example, gases are light and compressible whereas liquids are heavy and relatively incompressible. The value of density can vary widely between different fluids. A graph of density of water as a function of temperature is shown below. As you can see, a small change in the density of water has large variations in temperature. The specific volume, v, is the volume per unit mass and is therefore the reciprocal of the density: This property is not commonly used in fluid mechanics. Specific gravity: ratio of fluid density to the density of water at a certain temperature. The specific weight is related to density through the equation: Gases are highly compressible in comparison to liquids, with changes in gas density directly related to changes in pressure and temperature through the ideal gas law.
