%0 Journal Article
%A HUANG Guo-bing
%A DU Lan
%A WANG Cai-huan
%A NIE Yan-hua
%T Water-wing Trajectory and Characteristics of Rainfall in Slit-type Bucket
%D 2017
%R 10.11988/ckyyb.20160864
%J Journal of Yangtze River Scientific Research Institute
%P 44-47
%V 34
%N 12
%X Rare research has been reported on the water-wing in slit-type bucket caused by contracted sidewall  which poses a threat on bank slope stability. In this article, a physical model is setup to investigate into the relation between the type of bucket (contraction ratio β and bucket angle θ) and the characteristic of water-wing for revealing the motion law of water-wing in slit-type bucket and the distribution characteristic of rainfall intensity formed by the water-wing near downstream. Results show that along with the decreasing of contraction ratio, the water-wing is ejected higher, and at the same time, the scope of rainfall is larger and its location is closer to the outlet; whereas along with the decreasing of bucket angle, the water-wing trajectory doesn’t change obviously, but the lateral diffusion aggravates, resulting in the increase of rainfall range. On this basis, a concept of secondary water-wing lateral diffusion coefficient is proposed to predict the shape and scope of rainfall caused by secondary water-wing in different slit-type buckets. The research results could enrich the research contents of slit-type bucket, expand research range, and provide more theory foundation for design.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20160864