Аннотации:
Рассмотрены вынужденные колебания сосуда прямоугольной формы,
частично заполненного жидкостью. В сосуде расположены вставки в виде
двух наклонных решеток. Исследовано влияние угла наклона вставок на коэффициент потерь давления при различных значениях амплитуды колебания сосуда и длин пластин решеток. Проведено сравнение с известной аналитической зависимостью коэффициента потерь давления от угла наклона,
полученной для стационарного протекания через наклонную решетку. Forced oscillations of a rectangular tank partially filled with liquid are considered in this work. Two
inclined screens are located in the tank as inserts. The system of Reynolds–averaged Navier–Stokes
equations is solved numerically with the SST k-ω turbulence model. The volume of fluid (VOF) method
is taken for simulation of gas–liquid interface. The problem is solved in two-dimensional statement. Unstructured
triangular mesh converted to a fine structured rectangular mesh is used near the screens. A
comparison of two turbulence models with experimental data is carried out, and the optimal model for
the pressure loss coefficient calculation is chosen. The effect of the inserts inclination angle on the pressure
loss coefficient is investigated at different values of the oscillation amplitude of the tank and different
heights of the screen slats. It is obtained that the pressure loss coefficient dependence on the inclination
angle at small Keulegan–Carpenter number has the local maximum depending on the oscillation
amplitude and the geometric parameters of the screens. Comparison with the known analytical depend
ence of the pressure loss coefficient dependence on the inclination angle that obtained for the stationary
flow through the inclined screen is conducted. It is found that this dependence needs to be verified for
the case of oscillation tank at big screen inclination angle and small Keulegan–Carpenter number.
Описание:
М.Б. Атманских1, А.Ю. Боталов2, А.С. Губкин1,2, А.В. Пяткова2
1 Тюменский государственный университет, г. Тюмень, Российская Федерация
2 Тюменский филиал Института теоретической и прикладной механики им. С.А. Христиано-
вича СО РАН, г. Тюмень, Российская Федерация
Е-mail: aybotalov@bk.ru. M.B. Atmanskikh1, A.Yu. Botalov2, A.S. Gubkin1,2, A.V. Pyatkova2
1 Tyumen State University, Tyumen, Russian Federation
2 Tyumen Branch of the Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Tyumen,
Russian Federation
Е-mail: aybotalov@bk.ru