סמינר מחלקתי Tamir Brosh
SCHOOL OF MECHANICAL ENGINEERING SEMINAR
Monday, December 22, 2014 at 15:00
Wolfson Building of Mechanical Engineering, Room 206
Direct Numerical Simulations (DNS) Investigation of Turbulent Coal Combustion
Dr. Tamir Brosh
Mechanical and Systems Engineering, Newcastle University, Newcastle upon Tyne, UK
Coal combustion is responsible for about 40% of the world’s power requirements. This process accounts for about 24% of the world greenhouse gases generation. While many resources are invested in the improvement of cleaner, alternative, energy sources, the increasing demand for power generation means that the coal power plant will continue to play a major role in the world’s power production for the foreseeable future. Thus, improved fundamental understanding of coal particle-laden turbulent reacting flows is important for optimizing the coal combustion process and designing new generation energy-efficient and environment-friendly boilers and furnaces.
Recent advances in high performance computing have made it possible to obtain fundamental physical information regarding coal combustion based on numerical simulations, which is either difficult or impossible to obtain experimentally in the hostile furnace environment. Up until now most computational simulations of turbulent coal combustion have been carried out using Reynolds Averaged Navier Stokes (RANS) and Large Eddy Simulations (LES). However, the fidelity of RANS and LES simulations strongly depends on the accuracy of the turbulence and combustion models and are often subject to strong assumptions involved in the development of these models.
The current research focuses on the generation and analysis of data from Direct Numerical Simulations (DNS) of the carrier gas phase coupled with Lagrangian coal particles without making too restrictive physical approximations regarding the underlying reacting turbulent flow of the gas phase in order to obtain fundamental understanding of the coal combustion process.
Short Bio
Dr. Tamir Brosh obtained B.Sc. (2007) in Mechanical Engineering from Ben-Gurion University of the Negev where he also completed is M.Sc. (2009) and Ph.D. (2012). During his M.Sc. and Ph.D. Dr Brosh worked on Discrete Element Modelling of particle comminution in jet-mills. After completing his Ph.D., Dr Brosh took a postdoctoral research associate position in the School of Mechanical and Systems Engineering of Newcastle University UK where he worked on turbulent coal combustion using Direct Numerical Simulations. Dr Brosh is currently a visiting researcher at Newcastle University where he continues to work on coal combustion, and also contributing to the work on droplet combustion and flame wall interactions
