Результаты исследований: Научные публикации в периодических изданиях › статья по материалам конференции › Рецензирование
The gap size effect on leakage flow and cavitation in the clearance of a 2D hydrofoil : High-speed visualization and velocity measurements. / Pervunin, Konstantin S.; Timoshevskiy, Mikhail V.; Zapryagaev, Ivan I. и др.
в: IOP Conference Series: Earth and Environmental Science, Том 240, № 6, 062040, 28.03.2019.Результаты исследований: Научные публикации в периодических изданиях › статья по материалам конференции › Рецензирование
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TY - JOUR
T1 - The gap size effect on leakage flow and cavitation in the clearance of a 2D hydrofoil
T2 - 29th IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2018
AU - Pervunin, Konstantin S.
AU - Timoshevskiy, Mikhail V.
AU - Zapryagaev, Ivan I.
AU - Markovich, Dmitriy M.
AU - Semenov, Georgy A.
AU - Zakharov, Aleksandr V.
PY - 2019/3/28
Y1 - 2019/3/28
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85063951197&partnerID=8YFLogxK
U2 - 10.1088/1755-1315/240/6/062040
DO - 10.1088/1755-1315/240/6/062040
M3 - Conference article
AN - SCOPUS:85063951197
VL - 240
JO - IOP Conference Series: Earth and Environmental Science
JF - IOP Conference Series: Earth and Environmental Science
SN - 1755-1307
IS - 6
M1 - 062040
Y2 - 16 September 2018 through 21 September 2018
ER -
ID: 19354658