التفاصيل البيبلوغرافية
| العنوان: |
Observation of large-scale hydrodynamic structures in a vortex tube and the Ranque effect. |
| المؤلفون: |
Arbuzov, V. A., Dubnishchev, Yu. N., Lebedev, A. V., Pravdina, M. Kh., Yavorskiı, N. I. |
| المصدر: |
Technical Physics Letters; Dec97, Vol. 23 Issue 12, p938, 3p |
| مصطلحات موضوعية: |
HYDRODYNAMICS, VORTEX tubes |
| مستخلص: |
The existence of large-scale structures in the form of a vortical double helix in a swirling Ranque flow is observed for the first time. The structure of the vortical double helix is visualized in real time by the method of Hilbert bichromatic filtering. The experimental result is interpreted on the basis that the most probable physical mechanism for the spatial energy separation in the gas flow (i.e., for the so-called Ranque effect) is viscous heating of the gas in a thin boundary layer at the walls of the vortex chamber and the adiabatic cooling at the center owing to the formation of an intense vortex braid near the axis. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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