Search academic texts

Information × Registration Number 0219U000758, 0118U005410 , R & D reports Title Intra chamber and general system thermo-hydrodynamic instability in heat-stressed elements of a liquid jet engine popup.stage_title Head Gotsulenko Vladimir, д.т.н. Registration Date 22-02-2019 Organization Institute of Engineering Thermophysics of the Ukrainian National Academy of Sciences popup.description2 The work is devoted to the solution of the actual problems of intra-chamber and general system instability in a liquid jet engine and heat-stressed elements of heat and power systems. The theory of vibration combustion, which is developed for liquid jet engines, is supplemented by the equation of motion in the combustion chamber, taking into account L. Crocco's instability mechanism, and the negative thermal resistance. By changing the total cost through the RHD and violating the elemental relationship between the fuel components, the characteristic of the nozzle is formed by a falling branch, which was first installed for solid-fuel engines and leads to instability of the stationary flow. In the work it is established that in the gas generators of liquid jet engines, the falling branch of the nozzle's characteristics causes excitation of entropy waves that prolong the oscillations of vibrational combustion irrespective of the mechanisms of their excitation. At the heart of the theory of "loud" Higgins flames, and vibrational combustion lies the mechanism of delayed combustion of fuels, based on L. Crocco. In the work, a new mechanism of self-oscillation of vibrational combustion, which is due to the flow of heat to the stream, which is released during combustion, is determined. Product Description popup.authors Гончарук С.М. Гоцуленко В.В. Лисенко О.М. Ткаченко М.В. popup.nrat_date 2020-04-02 Close