Calculating Drag Coefficients for Spheres and Other Shapes Using C++

Report No. ARL-TN-612
Authors: Robert J. Yager
Date/Pages: June 2014; 24 pages
Abstract: This report presents a set of functions, written in C++, that can be used to estimate fluid drag coefficients. The code does not perform estimations based on first-principle calculations. Rather, it relies on user-supplied tables that relate drag coefficients to Mach and Reynolds numbers. Bilinear interpolations are used to estimate drag coefficients between tabulated values. Two sample user-input tables, both relating to spheres, are provided.
Distribution: Approved for public release
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Last Update / Reviewed: June 1, 2014