Іванів, В. В. та Бігун, І. В. та Ivaniv, V. V. та Bihun, I. V. (2019) ЗАСТОСУВАННЯ ТА МЕТОДИ ГІДРАВЛІЧНОГО РОЗРАХУНКУ НАПІРНИХ ТРУБОПРОВОДІВ-ЗБИРАЧІВ. Вісник Національного університету водного господарства та природокористування (4(88)). с. 76-89.

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Анотація

Названо основні галузі застосування напірних трубопроводів-збирачів. Наведено схеми влаштування трубопроводів-збирачів у низці технологічних пристроїв й описано принцип їх роботи. Зроблено критичний аналіз відомих методів розрахунку напірних трубопроводів-збирачів. Найдосконаліші методики проектування напірних трубопроводів-збирачів базується на диференціальному рівнянні напірного руху рідини зі змінною шляховою витратою.

Title in English

APPLICATIONS AND METHODS OF CALCULATION OFPRESSURE PIPELINES-COLLECTORS

English abstract

The main fields of application of pressure pipelines-collectors are named. For example, in water supply (water intake structures with tubular headers, infiltration intakes, beam intakes, water treatment plants (quick filters); drainage systems, drainage systems (construction sites and built-up areas); drainage (drainage networks, sewage treatment plants (biofilters for biological treatment, sand filters); heat supply (solar collectors); ventilation (exhaust systems); energy (steam pipelines-collectors, cooling towers) engineering (research stands), etc. The diagrams of placing of pipelines-collectors on a number of technological devices are presented and the principle of their work is described. Critical analysis of known methods of calculation of pressure pipelines-collectors is made. In spite of their widespread application, variable flow rate fluid flows are insufficiently studied. Advanced design technology for pressure pipelines-collectors is based on the differential equation of pressure flow of a fluid with a variable flow rate proposed by G. А. Petrov. A range of assumptions, for example, that of the inflow along the path to be constant along the pipelinescollector, hydraulic coefficient of friction is also to be constant along the pipelines-collector, and the angle of inflow jets is assumed to be right and ets. In fact, the aforesaid parameters are variable. In is known that incomplete taking into account the geometric parameters of pipelines-collector and that of kinematic characteristics of the fluid flow in it leads to considerable errors in calculation of pipelinescollector. Recently, new methods of calculation which take into consideration all the geometric parameters of pipelines-collector and all hydrodynamic characteristics of internal and external fluid streams, as well as those of the inflowing jets a been developed. However, the methodology for calculating of pressure pipeline collectors proposed by V. V. Chernyuk does not require the application of the above assumptions. In this work, the known theoretical methods of calculation of pressure pipelines-collectors are analyzed.

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