In this paper, the framework is described for the modelling of granular material by employing Computational Fluid Dynamics (CFD). This is achieved through the use and implementation in the continuum theory of constitutive relations, which are derived in a granular dynamics framework and parametrise particle interactions that occur at the micro-scale level. The simulation of a process often met ...

The basic structure of a pipeline is complex due to the narrow installation space system. Thus, considerable number pipelines are adopted in When hydraulic works, it impacted by fluid, which produces vibration. It necessary implement an effective method control vibration In recent years, research on active constrained layer damping (ACLD) technology increasing. However, there few studies charac...

On Demand print-head (SOD) is performed. This work leads us to study (i) fluid structure/interaction with a vibrating tube conveying fluid, assimilated to a cantilever beam excited by a pointwise piezoactuator (PZA) (ii) fluid film instability with spray generation. After establishing a more general equation of the motion of a vibrating tube filled with fluid using Hamilton's modified principle...

A numerical prediction for axial and swirling gas-solid flows in a vertical pipe was carried out with an Eulerian approach for the gas and a stochastic Lagrangian approach for particles, where particle-particle and particle-wall collisions were taken into consideration. The kε turbulence model was used to characterize the time and length scales of the gas-phase turbulence. Models predicting the...

Stationary bifurcations in several nonlinear models of fluid conveying pipes fixed at both ends are analyzed with the use of Lyapunov-Schmidt reduction and singular-ity theory. Influence of gravitational force, curvature and vertical elastic support on various properties of bifurcating solutions are investigated. In particular the conditions for occurrence of supercritical and subcritical bifur...