简易导管的数值计算及分析

Numerical Calculation and Analysis of Simple Duct

利用Fluent软件计算和分析了特定导管的水动力性征。比较了在不同前缘收缩系数、后缘扩张系数、平行中体长度和不同长径比条件下设计导管的推力、推力系数、升阻比和流场分布等。通过以上计算分析得到满足条件的最优导管形状,并与试验结果比对,证明该数值方法的有效性。

For a specific duct, its hydrodynamics feature was simulated and analyzed by using Fluent software. The thrust force, thrust coefficient, lift-to-drag ratio and flow distribution of the duct design under different conditions of different contraction coefficients, expansion coefficients, parallel, length-to-diameter ratio were compared. Through the above analyses and calculation, we can get the optimal duct shape, which meets all requirements. Comparisons to the experiment results show that the numerical method is effective.