A. Haider

TL;DR: In this paper, explicit equations for the drag coefficient and for the terminal velocity of falling spherical and nonspherical particles are developed for the CD and ut. The goodness of fit of these equations to the reported experimental data is evaluated and compared with that of other recently proposed equations.

TL;DR: In this paper, an updated survey of published mathematical reactor models for biomass and waste gasification in bubbling and circulating fluidized bed (FB) gasifiers is presented, where semi-empirical correlations are used to simplify the fluid-dynamics.

TL;DR: In this article, the Stokes' shape factor (K1) and the Newton's shape factor or scruple (K2) were modeled as functions of the geometric shape descriptors' sphericity and the projected area in the direction of motion.

TL;DR: Holzer and Sommerfeld as discussed by the authors proposed a simple correlation formula for the standard drag coefficient (i.e., a single stationary particle in a uniform flow) of arbitrary shaped particles, which can be easily used in the frame of Lagrangian computations where also the particle orientation along the trajectory is computed.

TL;DR: Of the scattering techniques available, light scattering provides the greatest potential for use as a tool for structure characterisation even though interpretation of the scattered intensity pattern is complicated by the strong interaction of light and matter.

TL;DR: A review of the recent efforts in developing discrete element method (DEM) approaches to model non-spherical particulate systems (NSPS) and strategies of coupling such a nonspherical DEM model with computational fluid dynamics (CFD) for particle-fluid flows is presented in this paper.