胸墙式泄洪闸模型试验及数值模拟优化研究
|
摘要
胸墙式泄洪闸采用孔口出流泄洪,沿程的水流流态和衔接形式复杂。为验证泄洪闸设计的合理性,采用水工模型试验和三维数值模拟相结合的方法,对泄洪闸的过流能力、水流流态、流速分布及压力分布等水力学参数进行了分析,对进口导墙和胸墙形式进行了优化设计。试验结果和数值计算结果吻合良好,优化后的泄洪闸进口流态良好,进水顺畅,且堰面负压较小,同时能将泄洪闸的泄流能力提高3%~5%。
As taking orifice as flood discharge in sluice with breast wall, the flow pattern and connection form are more complicated. In order to prove the rationality of sluice design, the physical model tests and three-dimensional numerical simulation are used to study the discharge capacity, flow pattern, velocity distribution and pressure distribution of sluice, and then the design optimizations of the shapes of inlet guide wall and breast wall are evaluated. The calculation results are more consistent with the observations of physical model tests. The results show that the inlet flow state of optimized sluice is good,the flow is smooth, the negative pressure of weir surface is smaller and the discharge capacity is creased by 3% to 5%.
As taking orifice as flood discharge in sluice with breast wall, the flow pattern and connection form are more complicated. In order to prove the rationality of sluice design, the physical model tests and three-dimensional numerical simulation are used to study the discharge capacity, flow pattern, velocity distribution and pressure distribution of sluice, and then the design optimizations of the shapes of inlet guide wall and breast wall are evaluated. The calculation results are more consistent with the observations of physical model tests. The results show that the inlet flow state of optimized sluice is good,the flow is smooth, the negative pressure of weir surface is smaller and the discharge capacity is creased by 3% to 5%.
引文
[1]李秋林,李连侠,廖华胜,等.变坡溢洪道模型试验及数值研究[J].水力发电,2017,43(5):56-59.
[2]姜攀,尹进步,何武全,等.有压泄洪洞弯道压力特性数值模拟与试验研究[J].水力发电,2016,42(2):49-53.
[3]胡静,邓军,陈华勇,等.宽尾墩对跌坎底流消能影响的试验研究[J].水力发电,2010,36(3):93-96.
[4]刘世裕.提高带直角胸墙溢洪道泄流能力的研究[J].水利水电技术,1980(4):15-17.
[5]王敏.溢洪道进口翼墙布置型式分析研究[J].河南水利与南水北调,2008(4):58-61.
[6]罗岸,黄智敏,陈卓英.提高带胸墙孔口溢洪道泄流能力的分析与应用[J].广东水利水电,1997(4):16-18.
[7]郭慧敏,武彩萍,陈俊杰,等.浅谈胸墙式泄洪闸体型与泄流量关系[C]∥第二届全国水力学与水利信息学学术大会论文集,北京:中国水力发电工程学会,2005.
[8]杨京广,把多铎,林劲松,等.河床式电站大坝泄洪流场的三维数值模拟[J].长江科学院院报,2009,26(8):28-31.
[9]郭园,程永光,李国栋.泄洪闸三维流态CFD优化分析[J].武汉大学学报:工学版,2012,45(2):182-186.
[10]李蕾.黄丰水电站泄洪闸泄流三维数值模拟研究[D].西安:西北农林科技大学,2014.
[11]王新雷.泄洪闸下游冲刷过程三维数值模拟研究[D].西安:西北农林科技大学,2016.
[2]姜攀,尹进步,何武全,等.有压泄洪洞弯道压力特性数值模拟与试验研究[J].水力发电,2016,42(2):49-53.
[3]胡静,邓军,陈华勇,等.宽尾墩对跌坎底流消能影响的试验研究[J].水力发电,2010,36(3):93-96.
[4]刘世裕.提高带直角胸墙溢洪道泄流能力的研究[J].水利水电技术,1980(4):15-17.
[5]王敏.溢洪道进口翼墙布置型式分析研究[J].河南水利与南水北调,2008(4):58-61.
[6]罗岸,黄智敏,陈卓英.提高带胸墙孔口溢洪道泄流能力的分析与应用[J].广东水利水电,1997(4):16-18.
[7]郭慧敏,武彩萍,陈俊杰,等.浅谈胸墙式泄洪闸体型与泄流量关系[C]∥第二届全国水力学与水利信息学学术大会论文集,北京:中国水力发电工程学会,2005.
[8]杨京广,把多铎,林劲松,等.河床式电站大坝泄洪流场的三维数值模拟[J].长江科学院院报,2009,26(8):28-31.
[9]郭园,程永光,李国栋.泄洪闸三维流态CFD优化分析[J].武汉大学学报:工学版,2012,45(2):182-186.
[10]李蕾.黄丰水电站泄洪闸泄流三维数值模拟研究[D].西安:西北农林科技大学,2014.
[11]王新雷.泄洪闸下游冲刷过程三维数值模拟研究[D].西安:西北农林科技大学,2016.