【作者】 余建军； 王锁芳；

【Author】 Yu Jianjun;Wang Suofang;Nanjing University of Aeronautics and Astronautics;

【机构】 南京航空航天大学；

【摘要】 本文对转盘带叶片的轴向直导式预旋结构进行了数值研究,设计了5种不同的叶形结构并在相同工况下进行稳态模拟。通过计算结果分析,在本文研究范围内,得出以下结论:轴向直导式预旋结构中,在转盘上增加叶片能够一定程度上提高预旋总温降,但总压损失也会略有增加;叶片高度对预旋性能影响很大,不同的旋转雷诺数下,存在最佳的叶片高度使得预旋总温降达到最大,同时叶片高度变化几乎不改变总压损失大小;不同的叶片形式对应的总温降也不同,在本文设计的5种叶形的计算结果看来,叶形3和叶形5的温降效果最好。更多还原

【Abstract】 In this research the effect of rotating-disc vane on flow of axial direct transfer pre-swirl is investigated.Five different vanes are designed and steady-state simulation are carried out in same condition.The following conclusions are abtained.In axial direct transfer pre-swirl system,the total temperature reduction and total pressure loss will rise if increase the number of rotatingdisc vanes.The height of vane has important influence on pre-swirl performance,there is optimal vane height in different rotational Reynolds number which can attain maximum drop of total temperature,but the height of vane has small effect on total pressure.The total temperature of outlet is variable when changing the shape of vanes,among the five designed vanes in this research,the third and fifth kind are better than the others.更多还原