本文選題：氣液兩相流　切入點(diǎn)：粒子圖像測(cè)速技術(shù)　出處：《水利學(xué)報(bào)》2016年10期 　論文類(lèi)型：期刊論文

【摘要】：氣液兩相流廣泛存在于水利工程、廢水處理等領(lǐng)域,其在氣液裝置中的流型流態(tài)及速度場(chǎng)分布可直接影響裝置運(yùn)行效能。本文采用實(shí)驗(yàn)研究與數(shù)值模擬相結(jié)合的方法,對(duì)圓柱形氣液裝置進(jìn)行PIV實(shí)驗(yàn),獲得了準(zhǔn)確的氣液兩相流氣相速度場(chǎng)分布;在充分考慮湍流、曳力、升力、湍流分散力等作用下,采用歐拉-歐拉雙流體模型和氣泡群平衡模型對(duì)氣液兩相流流場(chǎng)進(jìn)行了數(shù)值模擬,并將模擬結(jié)果與實(shí)驗(yàn)結(jié)果進(jìn)行驗(yàn)證,所得結(jié)果誤差控制在10%左右。結(jié)果表明,本文提出的模擬方法在氣液兩相流模擬中能夠得到較準(zhǔn)確的兩相流動(dòng)規(guī)律和速度場(chǎng)分布情況。
[Abstract]:Gas-liquid two-phase flow exists widely in water conservancy engineering, wastewater treatment and other fields. Its flow pattern and velocity field distribution in gas-liquid plant can directly affect the operation efficiency of the device. In this paper, the method of combining experimental research with numerical simulation is used. The accurate gas velocity field distribution of gas-liquid two-phase flow is obtained by PIV experiment on a cylindrical gas-liquid device, and the effects of turbulence, drag force, lift force and turbulent dispersion force are fully taken into account, such as turbulent flow, drag force, lift force, turbulent dispersion force and so on. Euler-Euler two-fluid model and bubble group equilibrium model are used to simulate the gas-liquid two-phase flow field. The simulation results are verified with the experimental results. The error of the obtained results is controlled at about 10%. The simulation method presented in this paper can obtain more accurate two-phase flow law and velocity field distribution in gas-liquid two-phase flow simulation.
【作者單位】： 西安理工大學(xué)陜西省西北旱區(qū)生態(tài)水利工程國(guó)家重點(diǎn)實(shí)驗(yàn)室;山西省水利建設(shè)開(kāi)發(fā)中心;山西省水利水電科學(xué)研究院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51076130)
【分類(lèi)號(hào)】：O359.1

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本文編號(hào)：1575022