Computational Study of the Multiphase Flow in the Fluidised Bed Equipment

CFD study of droplet atomisation using a binary nozzle in fluidised bed coating

“…In order to control process efficiency in fluidised bed coating using a model-54 based approach, it is necessary to explore each phenomenon taking place in the system. As 55 described in previous works (Duangkhamchan et al, 2010;Duangkhamchan et al, 2011), the 56 momentum transfer between the gas and solid phases was first modelled using various drag 57 coefficient models, in order to evaluate the appropriate drag model for the description of 58 fluidised bed behaviour (Duangkhamchan et al, 2010). However, in that work, only 59 interaction between gas and solid phases with the absence of atomisation was taken into 60 account.…”

“…The modelling of the complete coating process requires several 146 aspects to be studied in more detail and consequently, the research was split up into four parts, 147 pertaining to the modelling of these aspects. First, a CFD model with appropriate selection of 148 a drag model was constructed to allow the accurate prediction of gas/solid behaviour in 149 tapered fluidised beds (Duangkhamchan et al, 2010). Next, the effect of the release of 150 compressed air -to assist in the atomisation of the coating solution -on the hydrodynamic 151 behaviour of the fluidised bed was studied (Duangkhamchan et al, 2011).…”

Improvement of Centrifugal Wet Scrubber Design Through Laboratory Experimentation and Computational Fluid Dynamics

“…The Volume Of Fluid (VOF) (Hirt and Nichols, 1981) method in its various forms has been used to perform direct numerical simulation (DNS) of the primary breakup of liquid jets, while models based on the theory for breakup of liquid jets originating from atomisers are also available (Duangkhamchan et al, 2012). The VOF model has a requirement of an extremely fine mesh, which is at least an order of magnitude smaller than the smallest flow structure (Gorokhovski & Herrmann 2008).…”