本文選題：PLIF + 液態(tài)流出物��； 參考：《中國水利水電科學(xué)研究院學(xué)報(bào)》2017年02期

【摘要】：彎道河流水域排放口布置常選擇在彎道凹岸側(cè),以充分利用彎道環(huán)流加快稀釋,然而彎道環(huán)流條件下排放口近區(qū)稀釋特性與均勻流條件下存在較大差異,相關(guān)研究較少。本文在大比例尺物理模型試驗(yàn)中模擬復(fù)雜地形和彎道流動(dòng)條件下擴(kuò)散器熱浮力排放近區(qū)稀釋規(guī)律,采用平面激光誘導(dǎo)熒光(Planar Laser Induced Fluorescence,PLIF)技術(shù)進(jìn)行斷面濃度測量,分析了彎道環(huán)流對近區(qū)浮射流稀釋擴(kuò)散的影響,對擴(kuò)散器出流仰角、出流水平方位角和離岸距離等進(jìn)行了優(yōu)化,在此基礎(chǔ)上提出了適用于彎道水域地形條件熱浮力排放的近水平非等高多噴口離岸向排放型式。研究結(jié)果對于類似彎道水域熱浮力排放擴(kuò)散器優(yōu)化研究具有參考意義。
[Abstract]:In order to make full use of the curve circulation to accelerate dilution, the discharge outlet layout of the bend river is usually selected in the concave bank of the bend, but the dilution characteristics in the near region of the discharge outlet under the curve circulation condition are different from those in the uniform flow condition, and there are few related studies. In this paper, the near region dilution law of diffuser thermal buoyancy emission is simulated in large scale physical model test under complex terrain and curved flow conditions. Plane Laser induced fluorescence (Planar Laser induced fluorescence) technique is used to measure the cross section concentration. The influence of curved circulation on dilution and diffusion of floating jet is analyzed, and the elevation angle, horizontal azimuth angle and offshore distance of diffuser are optimized. Based on this, a near level non equal high nozzle offshore discharge pattern suitable for thermal buoyancy discharge in curved waters is proposed. The results are useful for the optimization of thermal buoyancy diffuser in similar curved waters.
【作者單位】： 中國水利水電科學(xué)研究院水力學(xué)研究所;
【基金】：國家自然科學(xué)基金項(xiàng)目(51209228)
【分類號】：TV131.61

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本文編號：2067978