定常假设优化叶型在非定常数值模拟下的气动性能研究

Aerodynamic Performance Analysis of Blade Optimized Based on Steady Flow Supposition Under the Condition of Unsteady Flow

利用数值模拟手段对基于定常假设条件优化得到的涡轮动叶叶型进行了非定常研究,分析了优化前后叶型在非定常流动条件下的性能表现,对比定常计算结果和实验结果,表明基于定常假设优化得到的叶型在非定常流动条件下仍然具有较好的气动性能,但非定常计算更能准确地反应叶型的真实性能。

In this paper, the blade which is optimized based on steady lfow supposition was investigated under the condition of unsteady lfow by numerical method. The blade optimization effect was analyzed. Comparison with the numerical results under the condition of steady flow and the experimental results indicates that the blade which is optimized based on steady flow supposition still has good performance under the condition of unsteady flow, but numerical results under the condition of unsteady lfow represent the real performance more accurately.