Вісник № 05
Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/6993
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21 результатів
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Документ Алгоритм оптимального проектирования сопловой решетки осевой турбины с помощью аэродинамической обратной задачи(НТУ "ХПИ", 2011) Юдин, Александр ЮрьевичThe algorithm of optimal design turbine cascade with assistance aerodynamic inverse problem, which to take account limitation on strength is introduce. The new profile of stator cascade which has local wavy contours and the coefficient of total losses is much lower, than at an initial cascade of atlas profile is designed.Документ Математическое моделирование тепловых процессов при поверхностном упрочнении элементов конструкций(НТУ "ХПИ", 2011) Веселовский, В. Б.; Малая, Ю. А.; Губин, А. И.; Ляшенко, В. И.The mathematical model of thermal processes at surface strengthening of multilayer constructions elements has been developed on the basis of the generalized heat conduction law. The proposed model takes into account the finite speed of heat propagation and nonideal thermal contact at the junctions of layers. The boundary problem is solved byan operational method. The study of the obtained solution and calculations of temperature fields have been performed.Документ Анализ причин исчерпания ресурса паровой турбины(НТУ "ХПИ", 2011) Сухинин, В. П.; Канюк, Г. И.; Пугачева, Татьяна Николаевна; Лавриненко, Т. А.Questions, related to exhausting of resource of high temperature knots of turbine, are considered. Factors, determining duration of reliable exploitation of turbine, are resulted: exhausting of the protracted plasticity from the creep of material; accumulation of damages in the critical areas of rotors from a small of cycle of fatigue.Документ Переходные характеристики двухходового трубчатого теплообменного аппарата(НТУ "ХПИ", 2011) Шевелев, Александр Александрович; Тарасенко, Александр Николаевич; Барвинок, В. С.On the basis of numeral design the self-reactance analysis of transients of tubular two-thread heat-exchange vehicle isconducted. A heat-exchange vehicle isexamined as an object with distributive parameters. The executed decisions allowed to get transitional descriptions of heat-exchange vehicle depending on the rate of change of temperature of warming heat-carrying agent for the row of characteristic values of aquatic numbers of heat-carrying agents.Документ Разработка конвективной системы охлаждения камеры сгорания газотурбинного двигателя мощностью 25 МВт(НТУ "ХПИ", 2011) Сербин, С. И.; Мостипаненко, А. Б.The complex calculations method of the convective cooling system including the results of computational fluid dynamics of the combustion processes was described.Документ Использование системы уравнений термодинамических свойств воды и водяного пара IAPWS-95 при расчетах трехмерных вязких течений в проточных частях паровых турбин(НТУ "ХПИ", 2011) Русанов, А. В.; Пащенко, Н. В.An approach to the approximation of the equations of state for water and steam International Standard IAPWS-95 for numerical simulation of 3-D flows of steam in the flow part of turbomachinery, which provides sufficient accuracy of the thermodynamic quantities in the whole range of modern and advanced steam turbines.Документ Теплообмен при импульсной подаче диспергированной воды на высокотемпературную поверхность(НТУ "ХПИ", 2011) Переселков, Александр РомановичThe heat transfer whenapplying water dispersed on high temperature surface was investigated. The influence of mean-time irrigating density on specific heat-fluxis presented. It is shown that heat flux is reduced compared with continuous supply of drops.Документ Определение повышения экономичности работы турбоустановки при утилизации тепла минимального пропуска пара в конденсатор с помощью парокомпрессионного теплового насоса(НТУ "ХПИ", 2011) Панов, В. В.Problem of turbo-installation operational efficiency increasing at the modes with minimal steam passage into the condenser was studied. It is proposed to use the vapor compression heat pump(VCHP)for the useful utilization of this steam’ heat as well as for the elimination of ventilation effect and improvement of operational conditions of the last turbine’s stages. Design procedure of fuel economyat the VCHPinclusion into the heat diagramis shown.Документ Особенности структуры парового потока в периферийной зоне современной последней ступени ЦНД(НТУ "ХПИ", 2011) Лапузин, Александр Викторович; Субботович, Валерий Петрович; Юдин, Юрий АлексеевичExperimental investigation structure of flow a tperipheral zone of large-scale model modern last stage standard LPC powerful steam turbine is resulted. Behind nozzle and rotor blades parameters was measured. Coefficients flow rate and flow rate of peripheral leakage over rotor blade at different regime of operation stagе are defined.Документ Теоретические и экспериментальные исследования теплообменных процессов в пластинчатом испарителе(НТУ "ХПИ", 2011) Кошельник, Вадим Михайлович; Фокин, Виталий Сергеевич; Кошельник, Александр Вадимович; Збараз, Леонид ИосифовичLamellar heat exchangers with enlarged channel width are suggested to use as evaporators for thermal technological schemes. The results of theoretical and experimental investigations of heat exchange during boiling in vertical channels are presented. The new criterial dependences for calculation of heat exchange intensity are proposed.
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