CAJ | 학술논문

数值模拟计算的模型选择对计算结果的准确性十分重要，不同的模型产生的不同结果差异很大，该文论述了采用计算流体力学技术模拟urea-SCR喷雾过程的优越性，利用spalart-allmaras模型、标准k-ε模型和标准k-ω模型对喷嘴雾化进行了数值模拟，分析了各模型的收敛性，速度矢量，动压力分布等物理量。结果表明：spalart-allmaras模型存在失真的情况，标准k-ε模型和标准k-ω模型在尿素SCR喷嘴模拟方面的应用是可行的。
수치모의계산적모형선택대계산결과적준학성십분중요，불동적모형산생적불동결과차이흔대，해문논술료채용계산류체역학기술모의urea-SCR분무과정적우월성，이용spalart-allmaras모형、표준k-ε모형화표준k-ω모형대분취무화진행료수치모의，분석료각모형적수렴성，속도시량，동압력분포등물리량。결과표명：spalart-allmaras모형존재실진적정황，표준k-ε모형화표준k-ω모형재뇨소SCR분취모의방면적응용시가행적。
The numerical simulation of the model selection is very important for the accuracy of the calculation results, The dif?ferent results in different models differ greatly, This paper discusses the advantages of computational fluid dynamics simulation of urea-SCR spray process,using the Spalart-Allmaras model, the standard k- εmodel and standard k-ωmodel of the nozzle was numerically simulated and analyzed convergence, the model of the velocity vector and dynamic pressure . The results show that:the Spalart-Allmaras model has the problem of distortion,standard k-εmodel and standard k-ωmodel in the urea SCR nozzle simulation application is feasible.