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К ВОПРОСУ ЭКСПЕРИМЕНТАЛЬНОГО ОПРЕДЕЛЕНИЯ ГИДРАВЛИЧЕСКОГО КОЭФФИЦИЕНТА ТРЕНИЯ В НАПОРНЫХ ВОДОВОДАХ КВАДРАТНОГО СЕЧЕНИЯ

К ВОПРОСУ ЭКСПЕРИМЕНТАЛЬНОГО ОПРЕДЕЛЕНИЯ ГИДРАВЛИЧЕСКОГО КОЭФФИЦИЕНТА ТРЕНИЯ В НАПОРНЫХ ВОДОВОДАХ КВАДРАТНОГО СЕЧЕНИЯ

Abstract

В настоящее время известно более двух тысяч научных работ, посвященных гидравлическим сопротивлениям напорных потоков. Исследования гидравлического коэффициента трения в круглых и прямоугольных трубах производились отечественными и зарубежными исследователями достаточно давно и проблема определения гидравлического коэффициента трения, что составляет одну из сложнейших проблем механики жидкости, не получившую до сих пор полного теоретического решения. В статье представлены результаты экспериментальных исследований кинематической структуры потока и гидравлического коэффициента трения напорных водоводов квадратного поперечного сечения. Экспериментально гидравлический коэффициент трения определялся по известной методике на эквивалентной длине участка водовода, а после регрессионного анализа значений коэффициента Дарси, полученные данные автора сравнивались с данными других известных исследователей по бетонным водоводам.

Now more than two thousand scientific works devoted to hydraulic resistances of pressure flows are known. Researches of hydraulic friction coefficient in round and rectangular pipes were made by domestic and foreign researchers long ago, and the problem of determination of hydraulic friction coefficient that is one of the most difficult problems of fluid mechanics which hasn’t been solved theoretically yet. The article presents the results of experimental researches of the kinematic flow structure and hydraulic friction coefficient of pressure conduits of a square cross-section. Experimentally the hydraulic coefficient of friction was defined according to the known method on the equivalent length of the conduit, and after the regression analysis of values of the Darcy coefficient the obtained data of the author were compared with the data of other famous researchers on concrete conduits.

Keywords

НАПОРНЫЙ ВОДОВОД,СКОРОСТЬ ПОТОКА,РАСХОД,ГИДРАВЛИЧЕСКИЙ КОЭФФИЦИЕНТ ТРЕНИЯ (ДАРСИ),ПОТЕРИ НАПОРА ПО ДЛИНЕ,СМОЧЕННЫЙ ПЕРИМЕТР,ЭКВИВАЛЕНТНЫЙ ДИАМЕТР ПО ПЛОЩАДИ,ГИДРАВЛИЧЕСКИЙ ДИАМЕТР,ОТНОСИТЕЛЬНАЯ ШЕРОХОВАТОСТЬ,PRESSURE CONDUIT,FLOW SPEED,CONSUMPTION,HYDRAULIC COEFFICIENT OF FRICTION (DARCY COEFFICIENT),HEAD LOSS ALONG THE LENGTH,WETTED PERIMETER,EQUIVALENT DIAMETER ON THE SQUARE,HYDRAULIC DIAMETER,RELATIVE ROUGHNESS

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
bronze