泄槽反弧段通气孔面积对空腔长度影响的试验研究  

Experimental study on the impact of air vent area on the cavity length over the spillway chute with an anti-arc section

作　　者：舒蕴璟[1] 徐一民[1] 张继肖[1] 王尧[1] 

机构地区：[1]昆明理工大学电力工程学院,云南昆明650500

出　　处：《工程建设》2012年第5期4-8,28,共6页Engineering Construction

基　　金：国家自然科学基金(51069002);云南省自然科学基金(2009ZC015M)

摘　　要：通过泄槽反弧段模型试验,研究了在不同反弧半径,流量,挑坎高度,挑坎坡度时,通气孔面积对空腔长度的影响。试验结果表明,对于各种反弧半径、下泄流量、掺气坎高度及挑坎坡度,空腔长度最初均随通气孔面积的增大而增大,其后随着通气孔面积的继续增大,空腔长度的增大趋势变缓,当通气孔面积增加到一定数值后,空腔长度将不再增加。Through the anti-arc section modeling experiment of spillway chute, the influence of air vent area on cavity length under the conditions of different radiuses of anti-arc, flow rate, aerator heights and aerator slopes. The experiment result shows that, for different anti-arc radiuses, flow rate, aerator heights and slopes,the cavity length increases originally with the increase of air vent area,then as the air vent area continues to increase, the cavity length increases slowly, when the air vent area reaches some certain value,the cavity length no longer increases.

关 键 词：水力学试验 通气孔面积 反弧半径 挑坎高度 挑坎坡度 空腔长度 

分 类 号：TV135.2[水利工程—水力学及河流动力学]