根据Barschdorff的说法,用于生成冷凝流动测试数据的新型超音速喷嘴试验台

IF 1.3 Q2 ENGINEERING, AEROSPACE
Manuel Ernesto Maqueo Martínez, Stefan Schippling, Markus Schatz, Damian M. Vogt
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引用次数: 0

摘要

近几十年来,在理解与蒸汽流动中凝结发生有关的现象方面取得了相当大的进展,无论是实验上还是数值上。然而,不同的数值模型之间仍然存在一定的分歧。不幸的是,现有的实验验证数据不够详细,无法对计算流体动力学(CFD)模拟进行适当的验证。因此,本文提出了由斯图加特大学热涡轮机械实验室(ITSM)的Barschdorff在超音速喷嘴中获得的冷凝蒸汽流的新实验数据。在三个入口温度降至100.2°C的情况下,将入口压力稳定地设定为大约784毫巴。冷凝开始准确地通过喷嘴捕获,使用低至1毫米的空间分辨率用于气动和光谱测量。采用商用求解器ANSYS CFX进行CFD仿真。液滴直径在数值上被高估了约1.5倍。在Barschdorff最初的实验和ITSM的测量结果之间发现了分歧。然而,在沿喷嘴轴向的压力分布方面,实验结果与数值结果吻合得很好。结果重现性好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
New Supersonic Nozzle Test Rig Used to Generate Condensing Flow Test Data According to Barschdorff
Considerable progress has been achieved in recent decades in understanding the phenomena related to the onset of condensation in steam flows, both experimentally and especially numerically. Nevertheless, there is still a certain disagreement between the different numerical models used. Unfortunately, the available experimental validation data are not sufficiently detailed to allow for proper validation of computational fluid dynamics (CFD) simulations. Therefore, this paper presents new experimental data for condensing steam flows, acquired in a supersonic nozzle according to Barschdorff, at the Institute of Thermal Turbomachinery Laboratory (ITSM) at the University of Stuttgart. A steady inlet pressure of approximately 784 mbar was set for three inlet temperatures down to 100.2 ∘C. Condensation onset is accurately captured across the nozzle, using down to 1 mm spatial resolution for both pneumatic and light spectra measurements. CFD simulations were performed using the commercial solver ANSYS CFX. The droplet diameters are numerically overestimated by approximately a factor of 1.5. Disagreement has been found between original Barschdorff’s experiments and measurements at ITSM. However, there is a good agreement in terms of the pressure distribution along the nozzle axis between experimental and numerical results. The reproducibility of the results is excellent.
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来源期刊
CiteScore
2.30
自引率
21.40%
发文量
29
审稿时长
11 weeks
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