| Summary: | 碩士 === 淡江大學 === 水資源及環境工程所 === 83 === In river and drainage engineering the research of upstream
water rises and downstream energy loss by circulation at
the junction region is still its infancy. Most of the one
dimensional numerical simulation at the junction region the
energy equation are assumed either constant water level at the
upstream, lateral and downstream sections or no energy loss at
the junction region. This study performed the 60,45 and 30
degree angle junction flow experiments and developed an
one dimensional analytical model to predict the rate with
upstream and downstream depth by using mass, momentum
conservation principles. Then taking the results into energy
conservation equation to predict the energy loss at the
junction region.
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