学术
摘 要:
采用三维黏性流场数值分析方法，对轴流风机的静止部件分别进行了单独和整机条件下的数值计算．对2种情况下各静止部件流场和损失的变化进行了分析．结果发现：集流器的损失较大，其效率与扩散筒的效率相当，设计中必须加以考虑；与各个静止部件单独计算时相比较，在整机计算备件下风机的扩散筒和扩散塔的流场相互干涉比较严重，导致内部流场状况较差，流动损失增大；该扩散塔的出口速度分布非常不均匀，低速区面积太大，值得改进．[著者文摘]
文章出处:
《西安交通大学学报》-2008年42卷3期 -269-272页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
0253-987X（2008）03-0269-04
相关文章:
Study on Flow Fields and Losses of the Stationary Components in an Axial Flow Fan
LIANG Yaxun, LI Jingyin, TIAN Hua （School of Energy and Power Engineering, Xi＇an Jiaotong University, Xi＇an 710049, China）
Abstract:
By using 3-D viscous flow solvers, the numerical simulation was carried out to investigate the flow fields and losses in stationary part of an axial flow fan. By studying the variations of the flow fields and losses of the stationary components at isolated conditions and in the fan＇s assembly, it is found that the losses in the collector is large, and its efficiency is almost the same as the diffuser＇s, therefore its losses should be taken into account in the design. Secondly, the losses of the diffuser and diffusing tower increase in the fan＇s assembly compared with those at isolated condition, which means that the interference between them is strong and leads to worse flow fields. Finally, the flow fields at the exit of the diffusing tower are very uneven, and there exists a large area of low velocity, leading to a decrease of the static efficiency of the fan. An improvement should be made.[著者文摘]
Key words:
axial fan; stationary components; efficiency; losses
基金资助:
国家自然科学基金资助项目（50776066）.
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