Application of nanotubes in conveying nanofluid: a bifurcation analysis with consideration of internal energy loss and geometrical imperfection

Ali Farajpour*, Mergen H. Ghayesh, Hamed Farokhi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)
32 Downloads (Pure)

Abstract

This article deals with developing a coupled scale-dependent model to explore the nonlinear bifurcation response of initially imperfect nanotubes conveying nanofluid flow taking into consideration the influences of nonlinear viscoelasticity. Furthermore, the influences of both centrifugal and Coriolis forces are considered. The Beskok–Karniadakis model is employed to capture the influences of slip at the interface between the imperfect viscoelastic nanotube and the nanofluid. A refined combination of nonlocal and strain gradient elasticities is employed for taking into consideration size influences. After formulating the kinetic energy, elastic energy, viscous work and external work, the nonlinear coupled equations are derived for the nanofluid-conveying nanosystem, which simultaneously vibrates along the transverse and longitudinal directions. The nonlinear dynamical characteristics are calculated via utilising a Galerkin procedure and a direct-time-integration technique. It is found that chaotic regions can be removed by imposing a proper geometric imperfection.

Original languageEnglish
Pages (from-to)4357-4371
Number of pages15
JournalMicrosystem Technologies
Volume25
Issue number11
Early online date28 Feb 2019
DOIs
Publication statusPublished - 1 Nov 2019

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