TY JOUR TI SOLUTION OF THE PROBLEM OF FREE FLOW OF ROUGH TWO-DIMENSIONAL WATER FLOW WHEN FLOWING OUT OF A PRESSURE-FREE PIPE KW rough two-dimensional water free flow KW pressure-free pipe KW extreme current line KW elementary flow coupling scheme KW general solution of the problem JO Construction and Architecture AU Burtseva, O.A. AU Aleksandrova, M.S. AU Kochanenko, V.N. AU Kondratenko, A.I. PY 2021 IS 9 PB Publishing Center RIOR