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Information × Registration Number 0220U104597, 0120U104164 , R & D reports Title Reduction of polluting emissions with energy-efficient sealing solutions popup.stage_title Head Zahorulko Andrii V., Кандидат технічних наук Registration Date 23-12-2020 Organization Sumy State University popup.description2  The thermohydrodynamic analysis and the non-stationary gas flow problem of face buffer impulse seal with air as a sealed medium were computed. The verification of computational model and analytical calculation method was performed with experimental data on seal leakage rate and axial movable ring average temperature versus shaft rotation speed and sealed pressure obtained on a special test rig. The carried out computational experiments substantially supplemented the results of the laboratory tests by pressure and temperature fields of sealing film and rings. The calculation comparison of gas face impulse and spiral groove seals performance at high operating parameters was conducted. The influence of fluid pressure and thermal elastic distortions of the ring faces on the sealing performance was studied. The computational simulation of thermohydrodynamic problem, taking into account supercritical properties of sealed CO2 gas, and the analysis of axial movable ring vibrations of the gas face impulse seals was performed with computational fluid dynamic (CFD) technique. The influence of geometric parameters such as the depth, width, and the number of chambers and feeders on seal static and dynamic characteristics was analyzed. Analytical, numerical and experimental studies of the gas-gas pressure regulator, which is used to support a constant pressure difference between the buffer and sealing medium in the system of dry gas seals, including in the buffer face impulse seals of the compressor. Comparison of the results of calculation and experiment give a fairly satisfactory convergence Product Description popup.authors Pozovnyi Oleksandr O. popup.nrat_date 2020-12-23 Close