本文選題：Fluent軟件 + 徑向直葉片風(fēng)機(jī)��； 參考：《合肥工業(yè)大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年08期

【摘要】：文章利用Fluent流體仿真軟件在歐拉坐標(biāo)系中采用Realizableκ-ε湍流模型描述徑向直葉片風(fēng)機(jī)的氣相湍流流動(dòng),在拉格朗日坐標(biāo)系中采用離散相模型(discrete phase model,DPM)描述徑向直葉片風(fēng)機(jī)的粉塵與液滴的運(yùn)動(dòng),同時(shí)考慮氣、液、固三相之間的耦合關(guān)系,基于Euler/DPM/DPM模型對(duì)風(fēng)機(jī)內(nèi)部流場(chǎng)進(jìn)行數(shù)值模擬。計(jì)算結(jié)果表明,風(fēng)機(jī)的氣相流場(chǎng)較為復(fù)雜,具有強(qiáng)旋流特點(diǎn);液滴相在風(fēng)機(jī)葉輪的強(qiáng)烈擾動(dòng)作用力下充滿整個(gè)風(fēng)機(jī);大中粒徑的固體顆�；颈伙L(fēng)機(jī)葉片上水膜捕捉,而小粒徑的顆粒一部分被風(fēng)機(jī)葉片捕捉或被甩到風(fēng)機(jī)蝸殼壁面而被其上的水膜捕集,另一部分則會(huì)從風(fēng)機(jī)出口逃逸。通過(guò)將數(shù)值計(jì)算結(jié)果與實(shí)驗(yàn)值進(jìn)行對(duì)比,驗(yàn)證了三相流模型用于模擬風(fēng)機(jī)內(nèi)部三相流動(dòng)的可行性與準(zhǔn)確性,該模型可用于進(jìn)一步研究運(yùn)行參數(shù)對(duì)風(fēng)機(jī)除塵效率的影響及風(fēng)機(jī)的結(jié)構(gòu)優(yōu)化設(shè)計(jì)。
[Abstract]:In this paper, the realizable 魏-蔚 turbulence model is used in Euler coordinate system to describe the gas phase turbulent flow of radial straight blade fan using fluent fluid simulation software. In Lagrange coordinate system, discrete phase model (DPM) is used to describe the movement of dust and droplet in radial straight blade fan. Considering the coupling relationship between gas, liquid and solid, the flow field inside the fan is simulated based on Euler / DPM / DPM model. The results show that the gas-phase flow field of the fan is more complicated and has the characteristics of strong swirl, the droplet phase is filled with the whole fan under the strong disturbance force of the fan impeller, and the solid particles with large and medium diameter are basically captured by the water film on the fan blade. Some of the particles with small particle size are captured by the fan blade or dumped on the wall of the fan volute and captured by the water film on the fan volute. The other part will escape from the outlet of the fan. By comparing the numerical results with the experimental results, the feasibility and accuracy of using the three-phase flow model to simulate the three-phase flow in the fan are verified. The model can be used to further study the effect of operation parameters on dust removal efficiency of fan and the structure optimization design of fan.
【作者單位】： 中南大學(xué)機(jī)電工程學(xué)院;中南大學(xué)高性能復(fù)雜制造國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家重點(diǎn)研發(fā)計(jì)劃資助項(xiàng)目(2016YFC0209302)
【分類號(hào)】：TH43

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本文編號(hào)：1993096