Numerical Transonic Flow Field Predictions for NASA Compressor Rotor 37
Numerical Transonic Flow Field Predictions for NASA Compressor Rotor 37
复制标题
NASA 压缩机转子 37 的跨音速流场数值预测
DOI：
10.1115/95-gt-326
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
Donald H. Wiss
中科院分区：
文献类型：
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作者：
P. Dalbert;Donald H. Wiss
本文介绍了NASA跨音速轴流压气机转子37的流场计算。这些是通过两个商业上可用的3D Navier Stokes-代码BTOB 3D和TASCflow使用不同的湍流模型（即Baldwin-Lomax和k-e）获得的。其中一些结果提交给了1994年由ASME涡轮机械委员会组织的计算流体力学代码评估练习，在该练习中，将一些“盲”计算流体力学预测与NASA刘易斯研究中心以前未知的实验数据进行了比较。这些计算的目的是以与有经验的工程师通常用于标准工业设计任务的相同方式使用代码。因此，网格生成、流场模拟运行和后处理的工作都受到计算机资源的限制以及对成本效益的严格观察（人力和时间）。用这两种程序进行了两组计算：BTOB 3D有两种不同的叶尖间隙，TASC流有均匀的和展向变化的出口静压。一般来说，这两个代码的结果显示出良好的一致性，相对于测量的整体性能特性和平均展向分布。特别是，TASC流场解在流场的某些局部细节上显示出较高的预测精度，而在BTOB 3D程序中，边界效应似乎明显地混淆了流场。本文讨论了所采用的求解策略以及计算与测量之间某些差异的原因。Copyright © 1995 by ASME
Flow field calculations of the NASA transonic axial compressor Rotor 37 are presented. These were obtained by the two commercially available 3D Navier Stokes-codes BTOB3D and TASCflow using different turbulence models, i.e. Baldwin-Lomax and k-e. Some of the results were submitted to the CFD code assessment exercise organized in 1994 by the Turbomachinery Committee of the ASME, where a number of “blind” CFD predictions were compared against previously unknown experimental data taken at the NASA Lewis Research Center.The objective of these calculations was to use the codes in the same way as they are generally used by experienced engineers for standard industrial design tasks. Thus, the effort involved in grid generation, flow simulation runs and postprocessing was subject to the usual limitations in computer resources as well as a stringent observation of cost-effectiveness (manpower and time available).With both codes, two sets of calculations were carried out: BTOB3D with two different tip clearances and TASCflow with a uniform and a spanwise varying outlet static pressure. Generally, the results of both codes show good agreement with respect to the measured overall performance characteristics and averaged spanwise distributions. In particular, the TASCflow solutions display high prediction accuracy in some local details of the flow field while in the BTOB3D code, boundary effects seem to mix out the flow significantly.The solution strategies employed as well as the reasons for certain discrepancies between computations and measurements are discussed.Copyright © 1995 by ASME