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Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/6966
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Документ Многорежимная оптимизация последней ступени ЦНД паровой турбины(НТУ "ХПИ", 2010) Яковлев, В. А.; Ершов, Сергей ВладимировичThe example of multipoint aerodynamic optimization of low pressure cylinder last stage of the steam turbine by capacity of 200 MW is considered. The weighed stage efficiency for four operating conditions of the turbine is chosen as objective function. The technology of computational investigations is based on the use of 3D flow numerical models for turbomachinery flowpaths. Searching an objective function extremum was carried out byhybridapproach, combining genetic algorithmwith localdirectsearchmethodДокумент Численное исследование аэроупругого поведения компрессорной ступени в трехмерном потоке вязкого газа(НТУ "ХПИ", 2010) Гнесин, Виталий Исаевич; Колодяжная, Любовь ВладимировнаThe partial integration method of the solution for the coupled problem of unsteady aerodynamics and elastic blades oscillations has been applied to simulate the aeroelastic behaviour of compressor stage. The three-dimensional unsteady viscous gas flow is written by Reynolds averaged Navier-Stokes equations. The dynamic analysis uses the modal approach. The amplitude-frequency characteristics of the unsteady loads and blades elastic oscillations have been presentedДокумент Низкорейнольдсовая модель турбулентности с ограничителем производства кинетической энергии(НТУ "ХПИ", 2010) Ершов, Сергей Владимирович; Деревянко, А. И.The Low–Reynolds turbulence model with the kinetic energy production limiter is considered. The laminar-turbulent transition method is implemented in the solver FlowER-Y on the base of the k–ω SST model. The results of the calculations were compared with experimental data from ERCOFTAC database for gas flow along a flat plate. It is shown that the low-Reynolds modification of the k–ω SST model allows an approximate simulation of a transitional flow