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arXiv · 2206.03979

Similarity scaling of the axisymmetric turbulent jet

Chunyue Zhu·Yujia Tian·Preben Buchhave·Clara M. Velte
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Abstract

In the current work, we find that a free axisymmetric jet in air displays self-similarity in the fully developed part of the jet. We report accurate measurements of first, second and third order, spatially averaged statistical functions of the axial velocity component performed with a laser Doppler anemometer, including in the outer (high intensity) regions of the jet. The measurements are compared to predictions derived from a simple jet model, described in a separate publication, and we discuss the implications for the further study of self-similarity in a free jet. It appears that all statistical functions included in this study can be scaled with a single geometrical scaling factor -- the downstream distance from a common virtual origin.

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Chunyue Zhu, Yujia Tian, Preben Buchhave, Clara M. Velte. 2022-06-08. Similarity scaling of the axisymmetric turbulent jet. https://doi.org/10.1063/5.0102812

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