9 lines
238 B
Mathematica
9 lines
238 B
Mathematica
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function CD = sphere_CD( RE )
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% references:
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% http://www.chem.mtu.edu/~fmorriso/DataCorrelationForSphereDrag2013.pdf
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CD = (24./RE) + (2.6*(RE./5))/(1+(RE./5).^1.52) + 0.411*(RE/263000).^-7.94./(1+(RE/263000).^-8) + RE.^0.8/461000;
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end
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