화학공학소재연구정보센터
Advanced Powder Technology, Vol.31, No.8, 3134-3143, 2020
Nano-particle deposition in laminar annular pipe flows
The transport and deposition of nano-particles in annular pipe flows under laminar conditions were studied. The Lagrangian particle tracking method was used to simulate the Brownian diffusion of ultrafine solid particles in a three-dimensional domain. The effects of nano-particle size, flow rate, inner and outer pipe diameters, pipe length, and temperature were studied. The computational models for the deposition of nano-particles in tubular, as well as annular pipe flows, were validated. Furthermore, using the CFD simulations and the Lagrangian particle tracking results, a new correlation for evaluating the deposition fraction of nano-particles in annular pipe flows was developed. The presented results could provide guidelines for evaluating nano-particle transport and deposition in annular pipes. (C) 2020 Published by Elsevier B.V. on behalf of The Society of Powder Technology Japan. All rights reserved.