- 期刊
Numerical Simulation of the Axial-Flow Cyclone Separator
軸流式旋風分離器數值模擬研究
摘要
本文將正交試驗方法和數值模擬相結合，研究了不同數值模擬方法對直葉片旋風子的阻力特性計算的影響，通過極差分析得出最優的數值模擬方法，並將這種數值模擬方法用於螺旋葉片的渦旋管，通過實驗驗證了這種數值模擬方法同樣適用於螺旋葉片的渦旋管。通過研究分析得出：湍流模型對軸流旋風分離器阻力計算結果的影響最大，離散格式次之，壓力插值和壓力速度耦合演算法的影響最小；標準k-ε湍流模型，SIMPLE演算法，二階壓力插值，二階迎風離散格式的演算法組合對軸流導葉式旋風分離器阻力特性的預測具有較高的精確度，為軸流旋風分離器的深入研究提供一種有效的數值模擬方法。
關鍵字
無資料並列摘要
Axial-flow cyclone separator plays an important role in getting high-quality air of the gas turbine. In this paper, the optimal numerical simulation scheme of the straight-blade cyclone separator was searched to calculate its resistance characteristic. With orthogonal test and range analysis, the combination of standard k-ε turbulence model, SIMPLE coupling, second-order pressure interpolation and second-order upwind discretization is revealed to be the most suitable method, and the turbulence model impacts on the calculation results to the largest degree. In addition, the scheme is applied to the helical-blade separator with high precision validated by experimental values. Based on this method, more in-depth researches of the axial-flow cyclone separator could be carried on by the CFD technique with reduced computations.