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THANKSTHANKSTHANKS取水的自由面和管口列伯努利方程：H=(λ*L/d+ξ+1)v^2/2gv=2.456m/s所以流量Q=π/4*d^2*v=3.14/4*(20*10^-3)^2*2

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取水的自由面和管口列伯努利方程：
H=(λ*L/d+ξ+1)v^2/2g
v=2.456m/s
所以流量Q=π/4*d^2*v=3.14/4*(20*10^-3)^2*2.456*10^-3=0.77(L/S)

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