Numerical study Of heterogeneous combustion processes of Solid Fuels

Alganash, B., Paul, M.C. and Watson, I.A. (2013) Numerical study Of heterogeneous combustion processes of Solid Fuels. In: 13th UK Heat Transfer Conference, London, UK, 2-3 Sep 2013,

Abstract

Results of modelling the combustion of solid fuels in two different chambers are presented. The combustion occurs under turbulent flow conditions for which a RANS based k-ε turbulence model is applied, while the rates of the heterogeneous reaction are defined by the chemical kinetics based on the Arrhenius equation. In the first model, a two-phase computational modelling based on the Euler-Euler approach is performed to investigate the heterogeneous combustion processes of biomass in solid carbon phase inside a newly designed combustion chamber. A transient simulation was carried out for a small amount of carbon powder situated at the cup which is located at the centre of the combustion chamber. A heat source is provided to initiate the combustion with the air supplied by three injection nozzles. The results show that the combustion is sustained in the chamber, as evidenced by the flame temperature. In the second case, an axisymmetric combustion model based on the Euler-Lagrange approach is formulated to model the combustion of pulverized coal. The predicted results show that the combustion inside the reactor is affected by the particle size and have good agreement with experimental data.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Watson, Dr Ian and Paul, Professor Manosh
• Authors: Alganash, B., Paul, M.C., and Watson, I.A.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy