Analysis of the turbulent boundary layer and skin-friction drag reduction of a flat plate by using the micro-blowing technique
Само за регистроване кориснике
2022
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Numerical analyses of turbulent boundary layer parameters and skin-friction drag reduction
on a flat plate under the effect of air micro-blowing with the use of the SST k−ω turbulence
model are performed. The macroscale characteristics of a huge number of microjets are simulated
by using a microporous wall model (MPWM) incorporated into ANSYS FLUENT by user-defined
functions. Numerical results obtained within the Mach number range M = 0.2–0.5 (Reynolds number Re = 2.88 · 10^6–7.20 · 10^6) confirm the experimental data of other researchers. Furthermore, a slight increase in the boundary layer thickness, displacement thickness, and momentum thickness, as well as a decrease in the velocity gradient and shear friction are well captured. In comparison to a simple flat plate, applying air micro-blowing reduces the skin-friction coefficient by 51% at the Mach number M = 0.4 and blowing fraction of 0.008. Additionally, the skin-friction coefficient decreases as the blowing fraction and Mac...h number increase.
Кључне речи:
drag reduction / micro-blowing technique / active flow control / turbulent boundary layer / flat plateИзвор:
Journal of Applied Mechanics and Technical Physics, 2022, 63, 3, 425-436Издавач:
- Pleiades Publishing, Ltd.
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Najafi Khaboshan, Hasan AU - Yousefi, Elnaz AU - Svorcan, Jelena PY - 2022 UR - https://machinery.mas.bg.ac.rs/handle/123456789/4193 AB - Numerical analyses of turbulent boundary layer parameters and skin-friction drag reduction on a flat plate under the effect of air micro-blowing with the use of the SST k−ω turbulence model are performed. The macroscale characteristics of a huge number of microjets are simulated by using a microporous wall model (MPWM) incorporated into ANSYS FLUENT by user-defined functions. Numerical results obtained within the Mach number range M = 0.2–0.5 (Reynolds number Re = 2.88 · 10^6–7.20 · 10^6) confirm the experimental data of other researchers. Furthermore, a slight increase in the boundary layer thickness, displacement thickness, and momentum thickness, as well as a decrease in the velocity gradient and shear friction are well captured. In comparison to a simple flat plate, applying air micro-blowing reduces the skin-friction coefficient by 51% at the Mach number M = 0.4 and blowing fraction of 0.008. Additionally, the skin-friction coefficient decreases as the blowing fraction and Mach number increase. PB - Pleiades Publishing, Ltd. T2 - Journal of Applied Mechanics and Technical Physics T1 - Analysis of the turbulent boundary layer and skin-friction drag reduction of a flat plate by using the micro-blowing technique EP - 436 IS - 3 SP - 425 VL - 63 DO - 10.1134/S0021894422030075 ER -
@article{ author = "Najafi Khaboshan, Hasan and Yousefi, Elnaz and Svorcan, Jelena", year = "2022", abstract = "Numerical analyses of turbulent boundary layer parameters and skin-friction drag reduction on a flat plate under the effect of air micro-blowing with the use of the SST k−ω turbulence model are performed. The macroscale characteristics of a huge number of microjets are simulated by using a microporous wall model (MPWM) incorporated into ANSYS FLUENT by user-defined functions. Numerical results obtained within the Mach number range M = 0.2–0.5 (Reynolds number Re = 2.88 · 10^6–7.20 · 10^6) confirm the experimental data of other researchers. Furthermore, a slight increase in the boundary layer thickness, displacement thickness, and momentum thickness, as well as a decrease in the velocity gradient and shear friction are well captured. In comparison to a simple flat plate, applying air micro-blowing reduces the skin-friction coefficient by 51% at the Mach number M = 0.4 and blowing fraction of 0.008. Additionally, the skin-friction coefficient decreases as the blowing fraction and Mach number increase.", publisher = "Pleiades Publishing, Ltd.", journal = "Journal of Applied Mechanics and Technical Physics", title = "Analysis of the turbulent boundary layer and skin-friction drag reduction of a flat plate by using the micro-blowing technique", pages = "436-425", number = "3", volume = "63", doi = "10.1134/S0021894422030075" }
Najafi Khaboshan, H., Yousefi, E.,& Svorcan, J.. (2022). Analysis of the turbulent boundary layer and skin-friction drag reduction of a flat plate by using the micro-blowing technique. in Journal of Applied Mechanics and Technical Physics Pleiades Publishing, Ltd.., 63(3), 425-436. https://doi.org/10.1134/S0021894422030075
Najafi Khaboshan H, Yousefi E, Svorcan J. Analysis of the turbulent boundary layer and skin-friction drag reduction of a flat plate by using the micro-blowing technique. in Journal of Applied Mechanics and Technical Physics. 2022;63(3):425-436. doi:10.1134/S0021894422030075 .
Najafi Khaboshan, Hasan, Yousefi, Elnaz, Svorcan, Jelena, "Analysis of the turbulent boundary layer and skin-friction drag reduction of a flat plate by using the micro-blowing technique" in Journal of Applied Mechanics and Technical Physics, 63, no. 3 (2022):425-436, https://doi.org/10.1134/S0021894422030075 . .