The gap size effect on leakage flow and cavitation in the clearance of a 2D hydrofoil: High-speed visualization and velocity measurements : доклад, тезисы доклада

Pervunin K.S.; Timoshevskiy M.V.; Zapryagaev I.I.; Markovich D.M.; Semenov G.A.; Zakharov A.V.

Дополнительные ссылки: РИНЦ · Источник статьи

База данных: Каталог библиотеки СФУ

Библиографическое описание: The gap size effect on leakage flow and cavitation in the clearance of a 2D hydrofoil: High-speed visualization and velocity measurements : доклад, тезисы доклада / K. S. Pervunin [et al.]. - Текст : непосредственный // IOP Conference Series: Earth and Environmental Science : 29 / 29th IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2018 (2018 ; 16.09 - 21.09 ; Kyoto) : Institute of Physics Publishing, 2019. - 240. - P. 062040. - DOI 10.1088/1755-1315/240/6/062040.

Аннотация: In the study, tip-clearance cavitation inception and development was studied in the gap between an end face of a NACA0022-34 hydrofoil and a transparent sidewall of a test channel. The experiments were carried out for the attack angles of 3° and 9° and the gap width of 0.4 to 0.8 mm under various flow conditions on the cavitation number. In order to observe the tip-clearance cavitation inception and its dynamics, a high-speed visualization was applied. The leakage flow velocity was measured inside the clearance by a modified PTV technique. It was shown that unsteady dynamics of the primary cavity on the foil suction side affects the leakage flow direction and the gap cavitation evolution. An increase of the gap width causes the gap cavitation to be initiated at higher cavitation numbers.

Год издания: 2019

Авторы: Pervunin K.S. , Timoshevskiy M.V. , Zapryagaev I.I. , Markovich D.M. , Semenov G.A. , Zakharov A.V.

Издательство: Institute of Physics Publishing

Источник: IOP Conference Series: Earth and Environmental Science

Выпуск: 240

Мероприятие: IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2018 (Kyoto, 2018 ; 16.09 - 21.09)

Номера страниц: 062040

Держатель оригинала документа: Department of Physics,Novosibirsk State University, Institute of Power Engineering,Tomsk Polytechnic University, Kutateladze Institute of Thermophysics,Siberian Branch of the Russian Academy of Sciences, Public Joint-Stock Company Power Machines (LMZ)

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