Lesson Learned: Drag coefficient equation

0
6 years, 11 months ago
I wanted to share my Regression equation for calculating Drag coefficient: $$Y = a1 + {b1\over ln(x)}+ {c1\over ln(x)^2}+ {d1\over ln(x)^3}+ {e1\over ln(x)^4}+ { f1 \over ln(x)^5}$$ Where: Y = Drag Coefficient x = Drag Coefficient x (Re)2 a1 = -2.71 b1 = 101.72 c1 = -1309.58 d1 = 7839.31 e1 = -14897.30 f1 = 9989.59