Advance modelling of physical processes in energy engineering and environment
The presentation contains some highlights and major achievements of fulfilment of the Lead Scientist (Prof. K. Hanjalic) Grant No. 11.G34.31.0046 (2011-2013, ext. 2014-2015). This project resulted in establishing the Laboratory for Simulations of Processes in Energy Engineering at Novosibirsk State University (NSU). The activities of the Laboratory cover the theoretical, computational and experimental investigation of turbulent single- and two-phase flows including chemically reacting (combusting) flows in various devices, equipment, machinery and installations used in modern energy conversion, storage and utilization technologies, as well as in chemical and mechanical engineering. The motivation is the optimization of performances and increase of efficiency of various energy engineering technologies and minimization of the man’s impact on the environment and nature in general. In addition to gaining a deeper insight into the physics of various processes involved, the project has resulted in the development of new-generation computational codes for simulation and modeling of work processes in energy engineering as well as in the environment, which provide a tool for predicting performances and forecasting the ecological consequences of various technologies both in the planned (design) mode and in off-design and emergency modes.
The specific topics investigated include unsteady phenomena in hydropower engineering with focus on cavitation, related multi-phase phenomena and material erosion, vortical structures – vortex precessing and spiraling rope - in hydro-turbine draft tubes; combustion of gas- and solid fuels with focus on stabilization of low-emission lean flames by swirl and pulsation, extinction of diffusion flames over vaporizing liquids and solids, and combustion of mechanically-activated micronized coal; dispersion of pollutants in the atmosphere and water environment over complex terrain with heat islands, point and field pollution sources, under specific (and extreme) stratification conditions; evaporation, combustion and self-conservation of methane gas hydrates (the promising fuel of the XXI century).
Although the Megagrant has finished in 2015 the Laboratory continues working in these areas under financial support of the Russian Science Foundation grant (2014-2016, ext. 2017-2018).