CAJ | 학술논문

以卧螺离心机螺旋流道内流体为研究对象，应用 Fluent 软件中提供的7种典型湍流模型，在相同网格条件下进行三维稳态数值模拟。模拟结果表明：RNG k-ε模型与文献值吻合性最好，其次是 SST k-ω模型，Realizable k-ε模型虽然模拟结果良好，但选用时要慎重。RSM模型仅在模拟高转速时比较适合，在低转速时，偏差较大，而标准 k-ε，标准 k-ω，S-A 模型模拟结果与文献结果偏差较大。本文结果可以为卧螺离心机流场计算中的湍流模型的选取提供参考。
이와라리심궤라선류도내류체위연구대상，응용 Fluent 연건중제공적7충전형단류모형，재상동망격조건하진행삼유은태수치모의。모의결과표명：RNG k-ε모형여문헌치문합성최호，기차시 SST k-ω모형，Realizable k-ε모형수연모의결과량호，단선용시요신중。RSM모형부재모의고전속시비교괄합，재저전속시，편차교대，이표준 k-ε，표준 k-ω，S-A 모형모의결과여문헌결과편차교대。본문결과가이위와라리심궤류장계산중적단류모형적선취제공삼고。
In order to analyze the applicability of turbulence models for the numerical simulation of decanter centrifuges,seven different turbulence models of Fluent,a CFD software,have been used.Results show that RNG k-εmodel is well consistent with the literature values,and SST k-ωmodel is the second choice.Realizable k-εmodels appeared to be not bad,but be careful to se-lect and application.RSM model is only adapt to the high speed but not low speed.the calculation accuracy of standard k-ε, standard k-ωand S-A are worse.The results could be used as a guide for selecting turbulence model in viscous flow calculation for decanter centrifuges.