Temat: flow field structure - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: CFD simulation on wind turbine blades with leading edge erosion
Autorzy:: Wang, Yan
Wang, Liang
Duan, Chenglin
Zheng, Jian
Liu, Zhe
Ma, Gaosheng
Powiązania:: https://bibliotekanauki.pl/articles/2055055.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: wind turbine
leading edge erosion
flow field structure
aerodynamic performance
Opis:: Deep understanding on the impacts of leading edge erosion on the performance and flow characteristics of wind turbines is significant for the blade design and wind farms manage- ment. Pitting erosion and three levels of delamination are considered in the present study. The results show that the degrees of leading edge erosion have great influence on the flow separation, tangential force coefficient, normal force coefficient as well as the power output of the wind turbine. Leading edge erosion has the greatest impact on aerodynamics of the wind turbine at 15m/s, where the maximum loss in the power output can reach up to 73.26%.
Źródło:: Journal of Theoretical and Applied Mechanics; 2021, 59, 4; 579--593
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Flow field characteristic analysis of cushion system of partial air cushion support catamaran in regular waves
Autorzy:: Yang, Jinglei
Sun, Han-bing
Li, Xiao-wen
Liu, Xin
Powiązania:: https://bibliotekanauki.pl/articles/32910719.pdf
Data publikacji:: 2022
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: regular waves
partial air cushion support catamaran (PACSCAT)
cushion system
fluid structure interaction (FSI)
flow field characteristics
Opis:: In order to study the flow field characteristics of cushion system of partial air cushion support catamaran (PACSCAT) in waves, an analysis was carried out involving flexible treatment on the bow and stern air seals to simulate air seal shape under test conditions by means of computational fluid dynamics method and fluid structure interaction (FSI) method. On this basis, the pressure conditions of the air cushion chamber and the pressurized chamber at different wavelengths and different speeds are studied and compared with experimental results. The experimental results show that: for the air cushion pressure, the nonlinear characteristics of the numerical calculation results are more subtle than the experimental values, after linear transformation, the amplitudes of the experimental values are obviously greater than the calculated values after linear transformation, but the average values are not much different; At low speed of 2.0m/s, the spatial pressure distribution of the pressurized chamber and the air cushion chamber are uniformly distributed, at high speed of 3.6m/s, except for a certain pressure jump occurred in the air cushion chamber near the stern air seal, the pressure in other spaces is also evenly distributed, it proves that the pressurized chamber type of air intake can effectively meet the air cushion pressure balance.
Źródło:: Polish Maritime Research; 2022, 3; 21-32
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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