进水池吸气涡控制方法  

Control methods of air-entrained vortex of intake

作　　者：黄先北 奚超男 董兆华[2] 仇宝云 庞凯文 郭嫱 HUANG Xianbei;XI Chaonan;DONG Zhaohua;QIU Baoyun;PANG Kaiwen;GUO Qiang(College of Electrical,Energy and Power Engineering,Yangzhou University,Yangzhou,Jiangsu 225127,China;Jiangsu Provincial Irrigation Canal Management Office,Huai′an,Jiangsu 223200,China)

机构地区：[1]扬州大学电气与能源动力工程学院,江苏扬州225127 [2]江苏省灌溉总渠管理处,江苏淮安223200

出　　处：《排灌机械工程学报》2024年第7期657-662,共6页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金资助项目(51909231,52179091);江苏省水利科技项目(2022016);江苏省研究生科研创新计划课题(KYCX22_3481);扬州大学2021年校教改课题(YZUJX2021—C12)。

摘　　要：以进水池模型为研究对象,探索有效的吸气涡控制方法,基于计算流体动力学(CFD)技术,分析消波板与幕墙2种方法对吸气涡的抑制效果,并重点研究关键几何参数的影响.采用开源CFD软件OpenFOAM进行数值模拟,基于三方程的Bifurcation湍流模型求解湍流场以及CLSVOF方法捕捉气液交界面,从吸气涡形态、涡量、流线和出口吸气率等多角度对计算结果进行处理和对比分析.研究结果表明:深度为0.25 D 1的幕墙可以有效抑制进水池吸气涡,且吸气率可降低一半;随着幕墙深度增大,吸气率上升;参考海洋工程领域提出的消波板仅能推迟吸气涡的出现与发展,但无法起到抑制作用;在消波板中心位置和长度不变的情况下,改变消波板宽度均对吸气涡无明显抑制效果.研究结果可为进水池及相关工程设施优化设计提供一定的借鉴和参考.Taking the intake model as the research object,the effective methods were explored for controlling the air-entrained vortex.Based on computational fluid dynamics(CFD)technology,the suppression effects of two methods,namely the wave-dissipation plate and curtain wall,on the air-entrained vortex were analyzed,with a focus on the influence of key geometric parameters.Using the open-source CFD software OpenFOAM for numerical simulation,the three-equations Bifurcation turbulence model was used to solve the turbulence field,the CLSVOF method was used to capture the gas-liquid interface.The calculation results were processed and compared from multiple perspectives such as air-entrained vortex shape,vorticity,streamline,and air-entrainment rate at outlet.The research results indicate that a curtain wall with a depth of 0.25 D 1 can effectively suppress the air-entrained vortex in the intake,and the air-entrainment rate can be reduced by half.As the depth of the curtain wall increases,the suction rate increases.The wave-dissipation plate proposed in the field of ocean enginee-ring can only delay the appearance and development of the air-entrained vortex,but cannot have a suppressive effect.When the center position and length of the plate remain unchanged,changing the width of the plate has no significant inhibitory effect on the vortex.The research results can provide certain reference and guidance for the optimization design of intakes and related engineering facilities.

关 键 词：吸气涡 幕墙 消涡 消波板 

分 类 号：S277.9[农业科学—农业水土工程] TV671[农业科学—农业工程]