2.1. INTRODUCTION
The flow and behavior of fluids is important in many of the separation processes in process engineering. A fluid may be defined as a substance that does not permanently resist distortion and, hence, will change its shape. In this text gases, liquids, and vapors are considered to have the characteristics of fluids and to obey many of the same laws.
In the process industries, many of the materials are in fluid form and must be stored, handled, pumped, and processed, so it is necessary that we become familiar with the principles that govern the flow of fluids as well as with the equipment used. Typical fluids encountered include water, air, CO2, oil, slurries, and thick syrups.
If a fluid is inappreciably affected by changes in ...
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