人民黄河Issue(10)：111-113,3.DOI:10.3969/j.issn.1000-1379.2015.10.028
齿墩内流消能工的水力及消能特性试验研究
Hydraulic and Energy Dissipation Characteristics in Inner Energy Dissipaters of Tooth Block
摘要
Abstract
Tooth block is a new-type inner energy dissipater which is used in the pressure pipeline. In order to analyze its hydraulic characteristics and energy dissipation effects,this paper researched the shape optimized inner energy dissipaters of tooth block through physical model test,and got the following conclusions:the time-averaged pressure of three schemes is stable in the upstream. The pressure reduces sharply in the inlet of tooth block all of a sudden and reduces to minimize in position 0. 2D,then the pressure rises and levels off after position 6D. The time-averaged decreasing amplitude is large when the area contraction ratio of inner energy dissipaters of tooth block is small. The flow coefficient increasing amplitude and the flow capacity are small when the area contraction ratio is small. The head loss coefficient of three schemes is not obviously change when the flow rate increases to a certain degree. The head loss coefficient decreasing amplitude is small and its values are large when the area contraction ratio of inner energy dissipaters of tooth block is small. The energy dissipation ratio is large and the energy dissipation effect is better when the area contraction ratio of inner energy dissipaters of tooth block is small.关键词
齿墩内流消能工/过流能力/时均压强/水头损失系数/消能率Key words
inner energy dissipaters of tooth block/flow capacity/time-averaged pressure/head loss coefficient/energy dissipation ratio分类
建筑与水利引用本文复制引用
王海军,郝瑞霞,田淳..齿墩内流消能工的水力及消能特性试验研究[J].人民黄河,2015,(10):111-113,3.基金项目
山西省自然科学基金资助项目（2013011037－4）。 （）
