水利水电科技进展Issue(1)：40-43,4.DOI:10.3880/j.issn.1006-7647.2016.01.007
齿墩数量对齿墩式内消能工消能率影响试验
Experimental study on influence of number of tooth blocks on energy dissipation efficiency of tooth block energy dissipater
摘要
Abstract
In order to reduce the influence of a plug energy dissipater on the conveyance capability, a tooth block energy dissipater was investigated through physical modeling experiments. Through the testing of three schemes with different numbers of tooth blocks and the same area contraction ratio of 0. 375, the conveyance capacity, local head loss coefficient, energy dissipation effect, turbulence intensity, and characteristics of fluctuating pressure were analyzed. The results show that the number of tooth blocks has a certain effect on the energy dissipation effect, and, in the experimental range, with the increase of the number of tooth blocks, the conveyance capacity increases, the local head loss coefficient decreases, and the energy dissipation efficiency declines. The maximum turbulence intensity occurs 1. 5 times the tunnel diameter away from the inlet of the tooth block, and then become stable further than 7 times the tunnel diameter away. The maximum fluctuating pressure occurs 1. 3 to 1. 6 times the tunnel diameter away from the inlet of the tooth block, then sharply decreases, and finally become stable 5. 6 times the tunnel diameter away from the inlet of the tooth block.关键词
齿墩式内消能工/过流能力/消能率/局部水头损失系数/紊动强度Key words
tooth block energy dissipater/conveyance capacity/energy dissipation efficiency/local head loss coefficient/turbulence intensity分类
建筑与水利引用本文复制引用
张泽,田淳,张婷..齿墩数量对齿墩式内消能工消能率影响试验[J].水利水电科技进展,2016,(1):40-43,4.基金项目
山西省自然科学基金(2013011037-4) （2013011037-4）
