Validation of Numerical Simulation for Rotating Stall in a Transonic Fan
Validation of Numerical Simulation for Rotating Stall in a Transonic Fan
复制标题
跨音速风扇旋转失速的数值模拟验证
DOI：
10.1115/1.4006641
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Choi M
中科院分区：
文献类型：
--
作者：
Choi M
本文讨论了在现代跨音速风扇试验台上，在60%（亚音速）和95%（超音速）设计速度下失速数值模拟与实验数据的比较。非定常静压由安装在风扇上游和下游壳体上的高频Kulite传感器获得。当失速单元通过传感器下方时，测量中可以清楚地看到机匣压力的变化。采用隐式、时间精确、三维可压缩雷诺平均Navier-Stokes（RANS）求解器进行了数值失速模拟。实验与仿真的对比主要包括Kulites在旋转失速过程中的性能曲线和时域压力轨迹。在两种不同的风扇转速下，失速单元的数目和转速等失速特性与实验值吻合较好。旋转失速充分发展时的质量流量和载荷参数也与实验结果吻合较好。在数值和实验结果中，无论风扇速度如何，失速开始后最终都会形成大的失速单元。在验证的基础上，详细的流动已被评估，以了解在跨音速风扇旋转失速。此外，还发现，如果Kulites安装得离风扇叶片太近，则在瞬态流动期间使用壳体静压进行的质量流量测量可能是错误的。
This paper addresses a comparison of numerical stall simulations with experimental data at 60% (subsonic) and 95% (supersonic) of the design speed in a modern transonic fan rig. The unsteady static pressures were obtained with high frequency Kulite transducers mounted on the casing upstream and downstream of the fan. The casing pressure variation was clearly visible in the measurements when a stall cell passed below the transducers. Numerical stall simulations were conducted using an implicit, time-accurate, 3D compressible Reynolds-averaged Navier-Stokes (RANS) solver. The comparisons between the experiment and simulation mainly cover performance curves and time-domain pressure traces of Kulites during rotating stall. At two different fan speeds, the stall characteristics such as the number and rotating speed of the stall cells were well-matched to the experimental values. The mass flow rate and the loading parameter under the fully-developed rotating stall also showed good agreement with the experiment. In both the numerical and experimental results, a large stall cell was eventually formed after stall inception regardless of the fan speed. Based on the validation, the detailed flow has been evaluated to understand rotating stall in a transonic fan. In addition, it was found that the mass flow measurement using casing static pressure might be wrong during transient flow if the Kulites were mounted too close to the fan blade.
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影响因子：
2.5
作者：
A. Sayma;M. Vahdati;L. Sbardella;M. Imregun
通讯作者：
A. Sayma;M. Vahdati;L. Sbardella;M. Imregun
影响因子：
1.7
作者：
Minsuk Choi;M. Vahdati;M. Imregun
通讯作者：
Minsuk Choi;M. Vahdati;M. Imregun
捕捉风扇旋转失速的数值策略
DOI：
10.1177/0957650911403869
发表时间：
2011
期刊：
Journal of Power and Energy
影响因子：
--
作者：
Choi M
通讯作者：
Choi M
喘振和旋转失速期间不稳定套管压力测量分析
影响因子：
1.7
作者：
S. J. Anderson;N. Smith
通讯作者：
N. Smith