The original scheme of flame stabilization in the channel at close to cocurrent fuel supply for the fuel combustion at a high supersonic speed has been designed. Such solution provides high temperature of a stream in a zone of fuel-air mixture formation. Computational and experimental investigations of self-ignition and combustion of hydrogen were carried out in the model of combustor chamber with slotted channel (gasdynamical source of ignition) at Mach numbers 3.7 and 5.8 at the entrance. Tests have been performed in hot-shot wind tunnel IT-302M of ITAM SB RAS in a mode of the attached pipe. Numerical study has been performed on the basis of solving the full averaged Navier-Stokes equations, supplemented k-Q SST turbulence model. Configuration of the slotted channel has been designed with two variants of exit nozzle: with and without geometrical throat. It has been established that at the channel entrance two vortexes with high temperature have been appeared. Temperature has been keeping high in the channel with geometrical throat and at blocking of the slotted channel without throat. It was found that uniform subsonic stream in the channel with geometrical throat has been realized. The stream in the slotted channel without geometrical throat keeps supersonic but Mach number was lower than in the main channel. The structure of the flow at the slotted channel exit is significantly differs for this both cases.
The article studies the problems of financing innovation by enterprises and their impact on the effectiveness of implemented innovative projects. The relevance of the work is evidenced by the priority of the problem of maintaining and strengthening the innovative development of Russia against the background of the unstable economic, political and epidemiological situation in the country and in the world. The article presents a study of the cost structure of innovative activities of organizations. A correlation analysis of the dependence of the innovation performance indicator on the costs of enterprises for innovation activities, involving the calculation of the Pearson correlation coefficient, is performed. The reliability of the revealed correlation was verified. The results of the study allow us to conclude that there is a direct correlation and a high strength of the relationship between the volume of innovation financing and their effectiveness. A set of measures is proposed to address the issues of financial support for innovative projects on the basis of improving the system of state support for innovation, as well as the formation of new digital tools and the development of infrastructure for digital platforms for financing innovation activities. A system of measures aimed at improving the effectiveness of innovations has also been developed, where one of the main provisions is the development of the intellectual potential of the scientific sphere and the system of cooperation between all participants in the innovation process.
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