Vidimensionless Groups In Fluid Mechanics

Table 2-2 lists some dimensionless groups that are commonly encountered in fluid mechanics problems. The name of the group, and its symbol, definition, significance, and most common area of application are given in the table. Wherever feasible, it is desirable to express basic relations (either theoretical or empirical) in dimensionless form, with the variables being dimensionless groups, because this represents the most general way of presenting results and is independent of scale or specific system properties. We shall follow this guideline as far as is practical in this book.

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