Andrearczyk Artur, Konieczny Bartlomiej, Sokołowski Jerzy
Institute of Fluid Flow Machinery, Polish Academy of Sciences, 80-231 Gdansk, Poland.
University Laboratory of Material Research, Medical University of Lodz, 92-213 Lodz, Poland.
Polymers (Basel). 2020 Dec 31;13(1):137. doi: 10.3390/polym13010137.
This paper describes a novel method for the experimental validation of numerically optimised turbomachinery components. In the field of additive manufacturing, numerical models still need to be improved, especially with the experimental data. The paper presents the operational characteristics of a compressor wheel, measured during experimental research. The validation process included conducting a computational flow analysis and experimental tests of two compressor wheels: The aluminium wheel and the 3D printed wheel (made of a polymer material). The chosen manufacturing technology and the results obtained made it possible to determine the speed range in which the operation of the tested machine is stable. In addition, dynamic destructive tests were performed on the polymer disc and their results were compared with the results of the strength analysis. The tests were carried out at high rotational speeds (up to 120,000 rpm). The results of the research described above have proven the utility of this technology in the research and development of high-speed turbomachines operating at speeds up to 90,000 rpm. The research results obtained show that the technology used is suitable for multi-variant optimization of the tested machine part. This work has also contributed to the further development of numerical models.
本文介绍了一种对数值优化的涡轮机械部件进行实验验证的新方法。在增材制造领域，数值模型仍需改进，尤其是与实验数据相结合。本文展示了在实验研究过程中测得的压缩机叶轮的运行特性。验证过程包括对两个压缩机叶轮进行计算流体分析和实验测试：铝制叶轮和3D打印叶轮（由聚合物材料制成）。所选的制造技术和获得的结果使得确定被测机器运行稳定的速度范围成为可能。此外，对聚合物圆盘进行了动态破坏测试，并将其结果与强度分析结果进行了比较。测试在高转速（高达120,000转/分钟）下进行。上述研究结果证明了该技术在研发转速高达90,000转/分钟的高速涡轮机方面的实用性。所获得的研究结果表明，所使用的技术适用于被测机器部件的多变量优化。这项工作也为数值模型的进一步发展做出了贡献。
