Authors: F. Dierich; P.A. Nikrityuk
Addresses: Department of Energy Process Engineering and Chemical Engineering, Technische Universität Bergakademie Freiberg, 09596 Freiberg, Germany ' Department of Energy Process Engineering and Chemical Engineering, Technische Universität Bergakademie Freiberg, 09596 Freiberg, Germany
Abstract: This work is devoted to the development of a numerical model for particulate flows during phase-change processes. The model is based on the Direct Numerical Simulation (DNS) approach. The particle collisions are modelled using the hard sphere approach. The interface velocity of the melting/solidification is calculated by means of the Stefan condition for each particle. In this work we consider a two-dimensional system consisting of 40 circular ice dendrites moving up owing to the density difference in a two-dimensional channel filled with hot water (first case) and undercooled water (second case). The results of the simulations are discussed.
Keywords: phase change; particles; DNS; direct numerical simulation; Euler-Lagrange modelling; melting; solidification; particulate flows; hard sphere; ice dendrites.
Progress in Computational Fluid Dynamics, An International Journal, 2012 Vol.12 No.2/3, pp.112 - 118
Received: 08 May 2021
Accepted: 12 May 2021
Published online: 21 Jun 2012 *