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Title
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Experimental Study of the Influence of the Surrounding Tube Location and Mass Ratio on the Fluidelastic Instability of Flexibly Mounted Tubes in a Parallel Triangular Tube Bundle.
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Sub-Title |
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Subject |
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Sub-Subject |
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Author |
Luqman Ahmad Nizam, Shahab Khushnood, S. M. Farru
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Publish Year |
2018 |
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Diss#. |
https://doi.org/10.20855/ijav.2018.23.41261 |
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Pages |
534-546 |
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Text Language |
English |
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Accession |
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Library Section |
Research Article |
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Abstract |
Experiments have been designed to investigate the fluidelastic instability in a flexibly mounted tube in a parallel triangular tube bundle with a tube diameter of 12:7 mm and pitch-to-diameter (P/D) ratio of 1:45. The monitored tube, placed in the centre of the tube bundle, was equipped with a wireless accelerometer to acquire the vibration response under air cross-flow in a wind tunnel. The vibration response of the monitored tube was captured by changing the surrounding flexible tube location and the mass ratio. This experiment is the first of its kind, as it has not yet been reported in the literature. It is observed that the fluidelastic instability occurs for all the surrounding tube locations and mass ratios and is strongly dependent on the location and mass ratio. A strong tube-to-tube coupling exists, as indicated by the amplitude analysis of the monitored tube. The stability analysis suggests that increasing the mass ratio of the surrounding tubes seems to have an effect on th
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