Analysis of the nonlinear axial vibrations of a cantilevered pipe conveying pulsating two-phase flow
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JCAM-51-2_007
تاریخ نمایه سازی: 21 اردیبهشت 1400
Abstract:
The parametric resonance of the axial vibrations of a cantilever pipe conveying harmonically perturbed two-phase flow is investigated using the method of multiple scale perturbation. The nonlinear coupled and uncoupled planar dynamics of the pipe are examined for a scenario when the axial vibration is parametrically excited by the pulsating frequencies of the two phases conveyed by the pipe. Away from the internal resonance condition, the stability regions are determined analytically. The stability boundaries are found to reduce as the void fraction is increasing. With the amplitude of the harmonic velocity fluctuations of the phases taken as the control parameters, the presence of internal resonance condition results in the occurrence of both axial and transverse resonance peaks due to the transfer of energy between the planar directions. However, an increase in the void fraction is observed to reduce the amplitude of oscillations due to the increase in mass content in the pipe and which further dampens the motions of the pipe.
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Authors
Adeshina Adegoke
Department of Mechanical Engineering, University of Lagos, Nigeria
Omowumi Adewumi
Department of Mechanical Engineering, University of Lagos, Nigeria
Akin Fashanu
Department of Systems Engineering, University of Lagos, Nigeria
Ayowole Oyediran
Department of Mechanical Engineering, University of Lagos, Nigeria
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