Zh K Seydulla
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Zh K Seydulla has a total of 2 co-authors. Here are the top co-authors by number of shared publications:
G K Toleuov
Kazakh National University Al-Farabi, Kazakhstan, Almaty
1 shared publication- Muhtar Isataev
Department of Thermal and Technical Physics, Al-Farabi Kazakh National University, 71 Al-Farabi Ave, Almaty 050040, Kazakhstan
1 shared publication
Latest Publications
- Open Access
- 1 November 2019
- Published by IOP Publishing in Journal of Physics: Conference Series
- Vol. 1382 (1) , 012038
Study of aerodynamics of the jet spreading over cylindrical surface
The purpose of this work is to study the fields of average values of velocity in a turbulent air jet propagating along a smooth cylindrical surface with an adjustable nozzle width being b, the curvature parameter SR and Re number on both convex and concave surfaces. To identify basic patterns of physical phenomena occurring in the boundary layer, it has been established that in universal coordinates, the wall velocity profiles have a universal nature in the region of a change in the curvature parameter 0 ⩽ SR ⩽ |±0.12|, and virtually coincide with the velocity profiles of a turbulent boundary layer on a flat plate in a uniform flow past, except for the velocity peak region. This is due to the fact that the longitudinal pressure gradient is 104 ÷ 105 times lower than transverse pressure gradient. According to our data, it has been established that the excess static pressure near the streamlined surface with a distance from the nozzle and an increase in jet thickness can reach up to 30–40% of the velocity head.
- 1 November 2019
- Published by IOP Publishing in Journal of Physics: Conference Series
- Vol. 1382 (1) , 012038
Open AccessStudy of aerodynamics of the jet spreading over cylindrical surface
The purpose of this work is to study the fields of average values of velocity in a turbulent air jet propagating along a smooth cylindrical surface with an adjustable nozzle width being b, the curvature parameter SR and Re number on both convex and concave surfaces. To identify basic patterns of physical phenomena occurring in the boundary layer, it has been established that in universal coordinates, the wall velocity profiles have a universal nature in the region of a change in the curvature parameter 0 ⩽ SR ⩽ |±0.12|, and virtually coincide with the velocity profiles of a turbulent boundary layer on a flat plate in a uniform flow past, except for the velocity peak region. This is due to the fact that the longitudinal pressure gradient is 104 ÷ 105 times lower than transverse pressure gradient. According to our data, it has been established that the excess static pressure near the streamlined surface with a distance from the nozzle and an increase in jet thickness can reach up to 30–40% of the velocity head.