新疆农业大学学报2025，Vol.48Issue(2)：154-161,8.DOI:10.20088/j.cnki.jxau.2025.02.009
溢洪道弯段糙条消能工消能机理和布置优化研究
Study on the Energy Dissipation Mechanism and Layout Optimisation of Rough-Strips Energy Dissipators in Curved Spillway Sections
摘要
Abstract
In order to elucidate the systematic energy dissipation mechanism and optimal layout of rough-strips energy dissipator(R-SED)in curved spillways,model experiments combined with numerical simulations were employed to analyze key parameters,including energy dissipation rate,vorticity characteristics,mean square fluc-tuating energy,velocity distribution,dissipation methods,and energy conversion processes.The results indicated that,at an experimental flow rate of 15.00 L/s,the energy dissipation rate of the R-SED was notably high,typi-cally ranging from 42.85%-49.50%.The novel trapezoidal cross-section of the R-SEDs increased the vorticity in the curved section,intensifying the turbulence of the flow,which led to significant fluctuations in the mean square fluctuating energy at the front and middle of the bend.This enhancement in turbulence facilitated greater energy dissipation,simultaneously improving the uniformity of the velocity distribution and reducing the flow ve-locity in the bend.The optimal R-SED layout(Q=15.00 L/s,h1-h2=1.50～0.75 cm,∆L=17.00 cm,θ=40°)demonstrated superior performance across energy dissipation rate,vorticity characteristics,mean square fluc-tuating energy.Energy dissipation in the curved spillway with R-SEDs was observed to occur in three distinct re-gions:the mainstream vortex dissipation zone,the vortex dissipation zone at the interface with surrounding water,and the vortex dissipation zone on both sides of the mainstream.These regions interacted through shear forces,fa-cilitating a multi-stage energy conversion process,encompassing kinetic,potential,turbulent,and thermal energy.关键词
弯道水流/糙条/消能机理/能量转化/型式优化Key words
bend flow/rough-strips/energy dissipation rate/energy dissipation mechanism/type optimization分类
建筑与水利引用本文复制引用
张红红,牧振伟,刘泽亚,巩银鑫,马豪,刘新卫,齐咨竣..溢洪道弯段糙条消能工消能机理和布置优化研究[J].新疆农业大学学报,2025,48(2):154-161,8.基金项目
国家自然科学基金项目(52269019) （52269019）
新疆维吾尔自治区2024年自然科学青年基金项目(2024D01B44) （2024D01B44）
"新疆水利工程安全与水灾害防治重点实验室"2024年开放课题项目(ZDSYS-JS-2024-14) （ZDSYS-JS-2024-14）
新疆农业大学高层次人才科研培育计划 （）
