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Information × Registration Number 0216U006761, 0111U001441 , R & D reports Title Mathematical modelling of turbulent nonequilibrium chemically reactive flows of gas and two-phase mixtures in jets and in internal gas dynamics problems popup.stage_title Head Tymoshenko Valeriy Ivanovych, Registration Date 18-05-2016 Organization The Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine popup.description2 The research subjects: turbulent non-equilibrium chemically reacting flows of gas and two-phase mixtures for problems of internal gas dynamics and jets. The research objective: to develop mathematical models using full and simplified Navier-Stokes equations and software and methodical support for numerical simulating turbulent non-equilibrium chemically reacting flows of gas and two-phase mixtures for problems of internal gas dynamics and jets. The method used: calculations. The results obtained: mathematical models are formulated, algorithm support and software for calculating non-equilibrium flows of gas and two-phase mixtures through channels, jets and response volumes with provision for turbulent mixing and combustion are developed resulting in numerical studies of a wide range of flows. The Flow-Chemistry software is developed to calculate 2D unsteady turbulent chemically reacting flows of gas and two-phase mixtures using full Navier-Stokes equations. Operational programs for numerical simulating flows of gas-dispersive mixtures with provision for interphase physical and chemical interactions are created using parabolic Navier-Stokes equations with algorithms of operative calculations. Steady 2D gas and gas-dispersive flows in jets and through extended variable-geometry channels are studied. Special features of a turbulent chemically non-equilibrium flow through channel are revealed resulting in intensifying the process of combustion by selecting rational initial parameters in cases of subsonic and supersonic flows. The effects of after-combustion on thermogasdynamic parameters of a supersonic jet of a rocket propulsion system in the context of equilibrium and non-equilibrium models of combustion are demonstrated. Calculated validation of the effectiveness of dropped water injection in lowering the temperature of a non-isobaric supersonic jet of combustion products of a rocket engine with provision for hydrogen after-combustion is made. Special features of the effects of parameters for injection of pulverized coal into the high-temperature air stream on special features of combustion are found. The results obtained give recommendations for selecting rational parameters of non-equilibrium jet turbulent flows to improve the efficiency of combustion of hydrocarbon fuel and pulverized coal and minimization of deleterious effects. Applications: aircraft and rocket-space technology, power engineering, engine manufacturing, chemical and metallurgical industries. Product Description popup.authors Білоцерковець Ігор Семенович Галинський Валерій Павлович Дешко Ганна Євгенівна Книшенко Юрій Вікторович Тимошенко Валерій Іванович Щербаков В.І. popup.nrat_date 2020-04-02 Close