This study concerns a monitoring technique based on vibration measurements for identifying the presence of an acoustic source in fluid-filled pipe conveying turbulent flow. In such situation, source-induced vibrations can be smeared with flow-induced vibrations, which hinders detection. To increase signal-to-noise ratio (SNR), beamforming techniques applied to measured by array accelerometers m...

Pneumatic conveying, in which granular materials are transported using a gas phase, is an important industrial process for bulk particulate transport. This is usually carried out in either a dilute phase, in which the particles are effectively suspended in the gas phase, or a dense phase, in which the particles move in a bulk flow. Dense phase conveying is becoming increasingly popular as it re...

In this work, nonlocal vibration of double of carbon nanotubes (CNTs) system conveying fluid coupled by visco-Pasternak medium is carried out based on nonlocal elasticity theory where CNTs are placed in uniform temperature change and magnetic field. Considering Euler-Bernoulli beam (EBB) model and Knudsen number, the governing equations of motion are discretized and Ritz method is applied to ob...

Aiming at the problems of high energy consumption and particle breakage in pneumatic conveying process large-scale breeding enterprises, this paper, based on theoretical calculated value suspension velocity, a computational fluid model discrete element are established dynamics (CFD) method (DEM). Then, through numerical simulation gas-solid two-phase flow, influence four factors wind speed, mas...

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. Aw...