ContribDieselFoamSprayPropertiesDragModel

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if (Re > Re_{Limiter}) then C_d = C_{d,Limiter}
otherwise
C_d = \frac{24}{Re}(1 + a Re^b)
where a=preReFactor and b=ReExponent
if the deviation of sphericity, y, is used, then C_d will be modified as
C_d = C_d(1 + C_{distort}*y)