Search academic texts

Information × Registration Number 0307U003165, 0102U001751 , R & D reports Title Study of increasinng efficiency of gas flow energy utilization and the mecanisms of multyphase flow control popup.stage_title Дослідження.впливу вибору моделі турбулентності на характеристики нерівновадної хімічно-реагуючої С-О-Н-N газової суміші у газодинамічних трактах технологічних пристроїв та струменях. Розробка науково-методичного забезпечення для чисельного моделювання просторових турбулентних течій газу в лопаткових дифузорах відцентрових компресорних ступенів. Дослідження течії в газодинамічних трактах паливних та струменевих пристроїв з підвищеними енергетичними та екологічними характеристиками порівняння розрахункових та експериментальних результатів Head Timoshenko V.I. and Kovalenko N.D., Registration Date 30-01-2007 Organization Institute of Technical Mechanics NASU and NSAU popup.description2 Research objects are non-equilibrium flows of chemically active gas mixture in burner gas dynamic sections and in jets, centrifugal compressor stages of the aviation gas turbine engines, jet grinders of solid loose materials. Work aims is the numerical modelling of spatial turbulent gas currents in the field of the complex form and research of influence of a turbulence model choice on characteristics of two-dimensional nonequilibrium current of chemically reacting gas mix in gas-dynamic pathes of technological devices and in jets. Used techniques are the numerical modeling of chemically active gas mixtures flows and spatial turbulence gas flows on the basis of averaged Navie-Stocks' equations and their approximations with the turbulence differential models use; experimental studies and design-exploratory works. The obtained results: Influence of two turbulent differential models on the nonequilibrium current characteristics of chemically reacting gas mixture is investigated at a kinetic burning in a pipe subsonic air stream a supersonic calculated jet contained metan. Numerical modeling results of air current in blading diffuzer of centrifugal aviation engines compressor are submitted. Features of current pictures on the blading diffuzer are analysed. The heating system of a jet grinder working body is modified. Results of jet crushing of a solid and plastic materials are investigated. Ways of the power expenses decreasing and construction realibility increasing of gas-jet grinding engine for firm loose materials are planned due to improving ejecting process and classifier for ready products Product Description popup.authors popup.nrat_date 2020-04-02 Close