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Studying Helical Rod Oscillations Exposed to Vortex Flow

  • MECHANICS OF MACHINES
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Abstract

The modes of small oscillations are studied in a rod having an axis in the shape of a three-turn cylindrical helix using the expansion into oscillating eigenmodes and the method of vortex elements. Oscillationós are excited by pressure pulsations generated as a result of the processes of intense vortex formation when a spatial incompressible flow flows around the rod. The polyharmonic nature of unsteady loading and the response of the oscillatory system are demonstrated, as is the potential shown to develop intrinsic resonances in these systems. The results and modeling technique can be used to assess the durability of spiral tube bundles in heat exchangers.

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Funding

This work was supported by the Ministry of Science and University Education of Russia, project no. 0705-2020-0047.

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Authors and Affiliations

  1. Bauman Moscow State Technical University, Moscow, Russia

    G. A. Shcheglov

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  1. G. A. Shcheglov
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Correspondence to G. A. Shcheglov.

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Translated by V. Vetrov

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Shcheglov, G.A. Studying Helical Rod Oscillations Exposed to Vortex Flow. J. Mach. Manuf. Reliab. 50, 112–117 (2021). https://doi.org/10.3103/S1052618821020138

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  • DOI: https://doi.org/10.3103/S1052618821020138

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