离心压气机叶轮和扩压器叶片间空隙很小,在无叶区和半有叶区的流动非定常特性十分明显.特别是离心叶轮出口通常的射流/尾迹流动使得有叶扩压器进口在时间、空间两个尺度上都存在十分强烈的不均匀性.叶轮和扩压器叶片间的相互作用,历来都被认为是影响离心压气机效率和稳定工作范围的重要因素.本文引入确定应力模型和改进的计算域延伸方法,计算了Krain离心压气机级的流场,着重分析了叶轮出口无叶区、半无叶区等叶片问相互作用最强烈的区域的复杂流动现象.
参考文献
| [1] | H Krain.Experimental and Theoretical Investigation on the Internal Flow in A Centrifugal Compressor Diffuser[M].AGARD Conference: Centrifugal Compressor Flow Phenomena and Performance CP 282,1980 |
| [2] | H Krain .A Study on Centrifugal Impeller and Diffuser Flow[R].ASME paper 81-GT-9,1981. |
| [3] | H Krain.Experimental Observation of the Flow in Impellers and Diffusers[J].VKI Lecture Series,1984 |
| [4] | W N Dawes .A Simulation of the Unsteady Interaction of A Centrifugal Impeller with its Vaned Diffuser Flows Analysis[R].ASME paper 94-GT-105,1994. |
| [5] | R M Chriss;M D Hathaway;J R Wood .Experimental and Computational Results from the NASA Lewis LowSpeed Centrifugal Impeller at Design and Part Flow Conditions[R].ASME paper 94-GT-213,1994. |
| [6] | Kirtley K R;Beach T A .Deterministic Blade Row Interaction in A Centrifugal Stage[R].ASME paper 91-GT-273,1991. |
| [7] | Adamczyk J J .Model Equation for Simulation Flows in Multistage Turbomachinery[R].ASME Paper 85-GT-226,1985. |
| [8] | 赵晓路.使用流道反算延伸的多叶片排并行计算[C].论文集,1999:71-77. |
| [9] | 季路成,周盛.转／静干扰效应纳入设计体系的途径探索[C].中国工程热物理学会热机气动热力学学术会议论文集,1998:Ⅲ-47～Ⅲ-54. |
| [10] | G G Adkins;L H Smith .Spanwise Mixing in AxialFlow Turbomachines[J].ASME Journal of Engineering for Power,1982,104:97-110. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%