The results of numerical simulations of a jet discharging from a narrow slit at low Reynolds numbers Re are presented. A comparison with the data of laboratory experiments is performed, and it is shown that steady numerical solutions with increasing Re transform into unsteady solutions with self-excitation of sinusoidal instability. Lateral oscillations are superimposed at the inlet section, and their influence on the jet behavior is studied.

中文翻译：

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从狭缝进入水下空间的平面射流的非定常数值解

给出了在低雷诺数Re下从窄缝喷出的射流的数值模拟结果。与实验室实验数据进行了比较，结果表明，随着Re的增加，稳态数值解转化为具有正弦不稳定性自激的非稳态解。在入口处叠加了横向振动，并研究了它们对射流行为的影响。