Heat and mass transfer modeling for multicomponent multiphase flow with CFD

Electric heating of the silicon rods in Siemens reactor

“…Comparing to the industrial data obtained using a 24-rod Siemens reactor, the relative error of theoretical calculations are 7.32% and 9.41% for the rods located in the inner ring and outer ring, respectively. The proposed model is reliable for describing the behaviors of the rods since the relative error of the simulated results are within 10% by comparing to industrial data [28].…”

“…, is always to be employed to evaluate the veracity of theoretical calculation results [28]. Here, a i-cal is the simulated results calculated by the model, a i-measured is the industrial data obtained using a traditional industrial Siemens reactor.…”

Cross diffusion effects in the interfacial mass and heat transfer of multicomponent droplets

“…To account for these diffusion effects, the Maxwell-Stefan equations along with generalized Fick's law should be used to model the diffusive mass transport in multicomponent mixtures. mixtures [15][16][17]. Korchinsky et al [15] applied the Maxwell-Stefan equations along with the generalized Fick's law to calculate the multicomponent mass transfer considering a stagnant film and a rigid drop.…”

“…Considering the full phenomenological theory of multicomponent mass transfer, the work of Padoin et al [17] was the first to apply the Maxwell-Stefan equations along with the generalized Fick's law to model mass transfer in a two-phase flow and multicomponent system (composed of methane, n-pentane, n-hexane and n-octane) in CFD. The two-phase flow was modeled using the Eulerian-Eulerian approach, and the simulations were performed in ANSYS Ò CFD (FLUENT Ò ).…”

“…To accomplish the first purpose, a routine based on the code developed by Padoin et al [17] was written in a Lagrangian reference frame, where the material and thermal exchanges were accounted for following the droplet trajectories.…”