CAJ | 학술논문

采用欧拉（Euler）多相流模型与离散相模型（discretephase model,DPM）对脱硫除尘实验装置内部的气液固三相流流动进行三维湍流数值分析。在Euler坐标系中采用双流体模型来表述气液两相的相互耦合,同时在拉格朗日坐标系中考察颗粒的运动,把烟尘颗粒对气液两相的影响耦合于双流体模型中。通过对流场数值模拟计算结果的实验验证,得出此数学模型的可行性;分析脱硫除尘塔内部流场流动,得出气液固三相流特征,为脱硫模拟及结构优化设计提供依据;得出脱硫除尘塔除尘效率与颗粒粒径、进气风速、喷淋液气比等参数的相互关系;得出脱硫除尘塔进出口压差与烟气流量、液气比、烟尘浓度等参数的相互关系。
채용구랍（Euler）다상류모형여리산상모형（discretephase model,DPM）대탈류제진실험장치내부적기액고삼상류류동진행삼유단류수치분석。재Euler좌표계중채용쌍류체모형래표술기액량상적상호우합,동시재랍격랑일좌표계중고찰과립적운동,파연진과립대기액량상적영향우합우쌍류체모형중。통과대류장수치모의계산결과적실험험증,득출차수학모형적가행성;분석탈류제진탑내부류장류동,득출기액고삼상류특정,위탈류모의급결구우화설계제공의거;득출탈류제진탑제진효솔여과립립경、진기풍속、분림액기비등삼수적상호관계;득출탈류제진탑진출구압차여연기류량、액기비、연진농도등삼수적상호관계。
A multifluid Eulerian computational fluid dynamics model combined with（discrete phase model,DPM） was used to simulate a three-dimensional three-phase wet scrubber.Two-fluid approach was introduced to simulate the three dimensional gas-fluid flows,and the particles were traced in the Lagrangian frame,of which the effects on gas-liquid flow were coupled in two-fluid model.The numerical simulation experiments were carried out,which show that the experimental results are in good agreement with the simulated ones.The numerical solution of the three dimensional flow fields has been analyzed,obtaining the characteristics of three phase flow,which can provide fundamental basis for optimization and simulation of the desulphurization process.The relationships between the efficiency of dust collection and operating parameters,such as the particle sizes,inlet velocity,and gas liquid ratio,are obtained by the numerical simulation;the relationships between the resistance of the device and operating parameters,such as gas flow,gas liquid ratio and dust concentration,are also extracted by simulating.