\large
$$
Q_{FcmMaxLa\min ar}  = \left( {{{L_{FcmTubeMax} {\mathop{\rm Re}\nolimits} _{PipeTransition} ^2 \pi ^3 Nu_{FcmAlum} ^5 } \over {2gHL_{FcmTube} }}} \right)^{{1 \over 3}}
$$