2. The Graph of the Drag Coefficient verses Reynolds Number

In this section, we examine experimental results for the function, f, relating the drag coefficient, CD, and the Reynolds number, Re. The nature of the relationship between the drag coefficient and Reynolds number changes as these variables range over several orders of magnitude, so that it is useful to graph log CD vs. log Re instead of CD vs. Re.

2.1 The graph of log CD vs log Re

2.2 Interpretation of the graph of log CD vs log Re

2.3 Piecewise linear approximation of the log-log graph

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