本文選題：Fluent軟件 + 徑向直葉片風機　； 參考：《合肥工業(yè)大學學報(自然科學版)》2017年08期

【摘要】：文章利用Fluent流體仿真軟件在歐拉坐標系中采用Realizableκ-ε湍流模型描述徑向直葉片風機的氣相湍流流動,在拉格朗日坐標系中采用離散相模型(discrete phase model,DPM)描述徑向直葉片風機的粉塵與液滴的運動,同時考慮氣、液、固三相之間的耦合關系,基于Euler/DPM/DPM模型對風機內部流場進行數值模擬。計算結果表明,風機的氣相流場較為復雜,具有強旋流特點;液滴相在風機葉輪的強烈擾動作用力下充滿整個風機;大中粒徑的固體顆�；颈伙L機葉片上水膜捕捉,而小粒徑的顆粒一部分被風機葉片捕捉或被甩到風機蝸殼壁面而被其上的水膜捕集,另一部分則會從風機出口逃逸。通過將數值計算結果與實驗值進行對比,驗證了三相流模型用于模擬風機內部三相流動的可行性與準確性,該模型可用于進一步研究運行參數對風機除塵效率的影響及風機的結構優(yōu)化設計。
[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】： 中南大學機電工程學院;中南大學高性能復雜制造國家重點實驗室;
【基金】：國家重點研發(fā)計劃資助項目(2016YFC0209302)
【分類號】：TH43

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