Unknown macro: {latex}
\large
$$
D = 0.66\left[ {\varepsilon ^
Unknown macro: {1.25}
\left( {{
Unknown macro: {LQ^2 }
\over {gh_{\rm{f}} }}} \right)^
Unknown macro: {4.75}
+ \nu Q^
Unknown macro: {9.4}
\left( L \over {gh_{\rm{f }}} \right)^
Unknown macro: {5.2}
} \right]^
Unknown macro: {0.04}
$$