为研究不同流量下渐扩段局部水头损失规律,选取了MIKE软件的水动力(HD)模块,对渐扩段水面线进行模拟分析,从而得出局部水头损失的水面线、流场等相关规律,并与计算值进行对比。计算结果表明:模拟得到的渐扩段沿程水面线与计算值吻合较好,且从流场图上及水位对比图中可看出,MIKE软件更能很好地模拟出局部水头损失,大大减小计算的难度和复杂程度,且能做到精确模拟。研究成果可为相关实际水利工程提供依据。
Abstract
The water surface profile of gradually broadened channel is simulated with HD (hydrodynamic) model in MIKE software, and the change rules of water surface profile and flow field of local head loss are obtained. The simulation results are compared with results calculated by empirical formula, and the conclusion reveals that the simulated water surface profile of gradually broadened channel agrees well with the calculation result; MIKE could better simulate the local head loss by reducing the difficulty and complexity of formula calculation, hence achieving a precise simulation.
关键词
渐扩段 /
局部水头损失 /
流量 /
MIKE软件 /
经验公式
Key words
gradually broadened channel /
local head loss /
flow rate /
MIKE software /
empirical formula
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参考文献
[1] 吴持恭.水力学上册[M].北京:高等教育出版社,2007.
[2] 赵宝峰,金英子,卢玉邦,等. 对突然扩大局部水头损失的初探[J]. 东北农业大学学报,1997,28(2):71-74.
[3] 张 沁. 圆管突然扩大与突然缩小的局部水头损失系数的研究[J]. 科学技术与工程,2014,14(28):159-162.
[4] 李栋浩,王文娥,葛茂生,等. 突然缩小圆管局部水头损失系数试验研究[J]. 水利与建筑工程学报,2011,9(4):22-24.
[5] 闫旭峰,易子靖,刘同宦,等. 渐变河道水流结构及局部水头损失特性研究[J]. raybet体育在线
院报,2011,28(9):1-5.
[6] 吴永妍,刘昭伟,陈永灿,等. 梯形明渠–马蹄形隧洞过渡段流动形态与局部水头损失研究[J]. 水力发电学报,2016,35(1):46-55.
[7] 李梅华,李 娴. 局部水头损失对明渠非均匀流水面曲线的影响[J]. 黄河水利职业技术学院学报,2005,17(3):10-11.
[8] 谢海英. 管路突然扩大时局部水头损失的数值模拟[J]. 水资源与水工程学报,2013,24(3):152-153,160.
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