Majid Rajabi

TL;DR: In this paper, a coupled Computational Fluid Dynamics and Discrete Element Method (CFD-DEM) approach is presented to simulate the cuttings transport considering the dynamic collision process.

TL;DR: In this paper, the effect of particle shape on the transportation mechanism in well-drilling using a three-dimensional model that couples computational fluid dynamics (CFD) with the discrete element method (DEM).

TL;DR: In this article, an exact treatment based on the inherent background coefficients that describe the background amplitudes in the scattered field is employed to investigate the scattering of time-harmonic plane acoustic waves by an arbitrarily thick hollow isotropic functionally graded cylinder submerged in and filled with non-viscous compressible fluids.

TL;DR: In this paper, a developed CFD-DEM model is presented to study the cuttings transportation in aerated mud drilling process for inclined annuli at downhole conditions, which is conducted to determine the effects of liquid flow rate, air injection rate, annulus inclination angle, elevated temperature and pressure on the cut-ings transport efficiency.

TL;DR: The method of wave function expansion is adopted to study the three dimensional scattering of a time-harmonic plane progressive sound field obliquely incident upon a multi-layered hollow cylinder with interlaminar bonding imperfection.