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Information × Registration Number 0308U001717, 0106U001726 , R & D reports Title Development of methods of mathematical modeling and experimental simulation of gasdynamic flows in presence of phase and non-equilibrium physico-chemical transformations and studies in lows of high-temperature processes. popup.stage_title Розробка алгоритмічного і програмного забезпечення для розрахунку високотемпературних газодинамічних течій у каналах і струменях з використанням сучасних чисельних методів, проведення тестових розрахунків. Модернізація експериментальної установки для дослідження впливу супутнього повітряного потоку та складу палива на процес запалення. Head 1, Registration Date 19-02-2008 Organization Institute of Technical Mechanics of NASU and NSAU popup.description2 The research subjects are high-temperature thermogasdynamic processes in technological devices. The research goal: the development of algorithms and software to calculate high-temperature gasdynamic flows through channels and jets by using today's numerical methods, and test calculations. Improvements in an experimental installation to study the influence of an air cocurrent flow end fuel composition on ignition. The method used: calculated and analytical, experimental ones. The results obtained. A mathematical model to describe a nonstationary flow of a chemically reacted mixture through channel is built, and an algorithm of a numerical solution of the set of equation of gasdynamics with the arailability of chemical interaction is developed. The problem on issuing chemically reacted mixture from a receiver to the enwironment with back pressure interaction is developed. The problem on issuing chemically reacted mixture from a receiver to the environment with back pressure while suppling heat through channel is solved. A marsh algorithm to calculate a gas flow through channels located adjacent to a viscous layer is developed. The main feature of the algorithm is simultaneous integration of differential equations of the first order for a cross speed component and Pressure. The effects of cross pressure heterogeneity on characteristics of the channel flow while flowing-out of a supersonic turbulent jet in a subsonic cocurrent flow are studied using the operating version of software developed. Based on the method of characteristics, calculated algo-rithms of a nonstationary fluid flow through duct are developed considering formation of a vapour lock and a gas-liquid medium at separate sections. The results of test calculations are shown that consideration of those effects can change qualitatively the nature of transient and stationary flow regimes through ducts. An algorithm of a numerical calculation is developed, and transient gasdynamic processes in capacities are studied considering the supply of both fluid and neutral gases. To extend a range air speeds for testing processes of inguition and combustion of hydrocarbon fuel, the experimental installation is updated. Applications: gasdynamic processes in technological equipment of power engineering, engine manufacturing, aerospace engineering. Product Description popup.authors popup.nrat_date 2020-04-02 Close