High Performance Computing Support for United Kingdom Consortium on Turbulent Reacting Flows
Lead Research Organisation:
University of Central Lancashire
Department Name: Sch of Forensic and Investigative Sci
Abstract
Abstracts are not currently available in GtR for all funded research. This is normally because the abstract was not required at the time of proposal submission, but may be because it included sensitive information such as personal details.
Publications
Adoghe J.O.
(2019)
Numerical investigation into fast deflagrations and deflagration-to-detonation transitions in premixed gaseous H2 - O2 - N2 mixtures
in 12th Asia-Pacific Conference on Combustion, ASPACC 2019
Liu W
(2016)
A theory for steady and self-sustained premixed combustion waves
in Cogent Engineering
Liu W.
(2019)
Role of material compressibility in propagation of combustion waves
in 12th Asia-Pacific Conference on Combustion, ASPACC 2019
| Description | 1. Developing and applying software AMROC for direct numerical simulations of fast flame with detailed chemical kinetics ; 2. The mechanisms on flame accelerations and deflagration-to-detonation transition: Based on the compressible Navier-Stokes equations for reactive flow problems, an eigenvalue problem for the steady and self-sustained premixed combustion wave propagation is developed. The eigenvalue problem is analytically solved and a set of analytic formulae for description of the wave propagation is found. The analytic formulae are actually the exact solution of the eigenvalue problem in the form of integration, based on which an iterative and numerical algorithm for calculation of the steady and self-sustained premixed combustion wave propagation and its speed was developed. In order to explore the mathematical model and test the computational method, groups of combustion wave propagation modes were calculated. The computational results show that the non-trivial modes of the combustion wave propagation exist and their distribution is not continuous but discrete. 3. Investigation on transient flow of diffusion flames in compartment enclosures. Particular attention has been focus on the onset of flame oscillation through compartment openings. To support the high performance calculation and modelling, a number of experiments using gas, liquid, and solid fuels were carried out. The relationship between onset of flame oscillation and a number of parameters such as ventilation parameter, heat release rate were investigated. A empirical relationship for calculating the time from ignition to the start of flame oscillation were obtained. We are focusing on the intensive modelling. The results of this part of research is not published yet. This research work will also improve our understanding of fire spread in narrow spaces such as in building facade voids which can help fire engineers to identity problems in buildings like the Grenfell tower. |
| Exploitation Route | 1. A computational fluid dynamics software will be available for use in research work. Dr Liu can be contacted by persons who are interested. 2. The research work on flame accelerations and deflagration-to-detonation transition will help to understand the mechanism and improve explosion simulation. 3. The low speed flame oscillation will improve understanding of fire spread in buildings such as fire spread through cavities. 4. Published results can be used by fire safety professionals. |
| Sectors | Construction |