No default citation style available for Eprints
|
PDF
Evaluation of the Unsteady Turbulence Modelling and Thermal Insulation on the Performance of Partial Combustion Lance.pdf Download (399kB) | Preview |
Abstract
A computational fluid dynamics (CFD) study of a partial combustion lance (PCL) was performed using a hybrid scale adaptive simulation (SAS) in this work. In addition, the unsteady Reynolds-averaged NavierStokes(URANS) simulations using the standard k-ε (SKE), realizable k-ε (RKE) and renormalized (RNG)k-ε were performed for comparison purpose. Combustion was modelled using the species transport model, whereas the heat transfer was calculated using a combined convection-radiation boundary condition. Suitability of various gradient methods (i.e., Green-Gauss node-based, Green-Gauss cell-based and least squares cell-based) to discretize the convection and diffusion terms in the governing equations were assessed by comparing the CFD prediction with experimentally measured temperature. It was found that SAS provided a better prediction of the PCL temperature with about 5.1 % of error from the experimental data. The Green-Gauss node-based method showed a better agreement compared to the two cell-based gradient methods. Installation of thermal insulation increased the peak temperature by about 9.4 %. The finding in this work indicated that CFD model is useful for retrofitting study of an existing PCL.
| Item Type: | Article |
|---|---|
| Additional Information: | |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Faculty of Chemical & Natural Resources Engineering Institute of Postgraduate Studies |
| Depositing User: | Mrs. Neng Sury Sulaiman |
| Date Deposited: | 09 Sep 2015 08:00 |
| Last Modified: | 03 Oct 2019 08:09 |
| URI: | http://umpir.ump.edu.my/id/eprint/10215 |
| Download Statistic: | View Download Statistics |
Actions (login required)
 |
View Item |