Flow-Induced Divergence Instability of Single-WalledCarbon Nanotubes Embedded in Viscoelastic Medium

In this study, the vibration and flow-induced divergence instability of a nanoflow-conveyingsingle-walled carbon nanotube (SWCNT) embedded in a viscoelastic medium are performed.The small-size effects on flow field and the nanoscale effects on the solid SWCNTwalls are considered, simultaneously. Amongst several viscoelastic models, Kelvin-Voigtmodel, a simple mechanical model composing of parallel spring and dashpot, is employed tosimulate viscoelastic behavior. The influences of Knudsen number(Kn), nonlocal parameter,boundery conditions and viscoelastic behaviors of the foundation on flow-induced divergenceinstability of suported SWCNT are studied. Results illustrate that by putting an emphasis onthe critical flow velocities, a new flow classification can be identified based on different Kn values.

کلیدواژه ها:

Single-walled carbon nanotube ، Knudsen number ، critical flow velocity ، divergence