地特三等流力第二題的疑問 - 考試

By William
at 2013-12-25T11:17
at 2013-12-25T11:17
Table of Contents
今年地特流力第二題
下射式閘門的題目
題目給了y1,y2,V1
那要算V2是要用連續方程式 V1y1=V2y2
還是 閘門前後的能量方程式?
因為他設底床摩擦力可忽略
所以應該可以用能量方程式吧
不過這樣流量就會有問題
流出比流入還多
如果用連續方程式
這樣就不符合能量方程式了...
請問有考的各位是如何解答的?
謝謝
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