| 梯形输水明渠溢油运移特性数值模拟与试验研究 |
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| 作者姓名： | 刘晓轻 练继建 马 超 |
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| 作者单位： | 天津大学 水利工程仿真与安全国家重点实验室,天津,300072 |
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| 基金项目： | 国家重大科技专项基金资助项目( 2012ZX07205005) ; 高等学校学科创新引智计划资助( B14012) ; 天津市应用基础与前沿技术研究
计划自然科学基金重点项目( 13JCZDJC36200) |
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| 摘 要： | 面向长距离输水工程快速应对油类突发水污染事件的需求,以梯形输水明渠为例,采取二维水动力和溢油数值模拟以及物理模型试验相结合的手段,开展溢油运移特性数值模拟与试验研究。研究成果表明:由于梯形输水明渠过流宽度上的流速分布变化较大,油污染发生后,油膜纵向长度取决于渠道中间流速,其变化率可表达为渠道中间流速的0.5倍;溢油位置、风场及渠道边坡系数对油膜纵向长度影响很小。研究结果可快速预测明渠溢油污染范围,为污染物的应急处置与调控提供技术支持。
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| 关 键 词： | 梯形输水明渠 油膜运移 数值模拟 物模试验 快速预测 |
Numerical simulation and experimental investigation for oi l spill transport characteristics of
trapezoidal open channel in water transfer |
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| Authors: | LIU Xiaoqing LIAN Jijian MA Chao |
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| Affiliation: | ( S tate K ey Labor ator y of H y d r aulic E ngineer ing Simulation and S af ety , T ianj in Uni vers ity , Tianj in 300072, China) |
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| Abstract: | For t he need o f r apid r esponse to sudden o il pollutio n accidents in t he lo ng distance w ater tr ansfer pr oject, two2dimen2
sional hydro dynamic and oil spill numerical simulatio n and ex per imenta l model wer e emplo yed to investig ate the transpo rt char2
acter istics for oil spill in the tra pezoidal open channel. The r esult s indicated that due to the la rge var iatio n of velocity distr ibution
at the hor izo nta l cro ss2section of the trapezo idal open channel, the longitudinal leng th o f oil slick depends on the middle velocity
of open channel after sudden o il pollutio n accidents, and it s va riation rate is 01 5 times o f t he middle v elo city and less affected by
the o il2spilled lo cation, w ind, and slope co efficient. The r esult s can pr edict the o il spill sco pe quickly and pro vide technical sup2
po rt fo r the emerg ency disposal and regulation. |
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| Keywords: | trapezo idal o pen channel o il transpo rt numerical simulation ex per imental study fast predictio n |
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