Zobrazeno 1 - 10
of 181
pro vyhledávání: '"Svorcan Jelena"'
Autor:
Svorcan Jelena
Publikováno v:
Theoretical and Applied Mechanics, Vol 50, Iss 2, Pp 133-144 (2023)
Wall-modeled large-eddy simulation (WMLES) is an advanced mathematical model for turbulent flows which solves for the low-pass filtered numerical solution. A subgrid-scale (SGS) model is used to account for the effects of unresolved small-scale turbu
Externí odkaz:
https://doaj.org/article/12faa63d9d2245db809a5122e5419ad5
Publikováno v:
Scientific Technical Review, Vol 72, Iss 2, Pp 8-13 (2022)
Detailed studies of propeller flows are regaining both interest and significance worldwide, as the number of their different design and applications (particularly for futuristic urban air vehicles) continues to grow. An additional distinctive charact
Externí odkaz:
https://doaj.org/article/b16d6c5a25a4462c996695a784fb5662
Publikováno v:
Theoretical and Applied Mechanics, Vol 48, Iss 2, Pp 143-157 (2021)
The paper focuses on the possibilities of adequately simulating complex flow fields that appear around small-scale propellers of multicopter aircraft. Such unmanned air vehicles (UAVs) are steadily gaining popularity for their diverse applications (s
Externí odkaz:
https://doaj.org/article/cf9666df26c1497bb6ab7f670dfcab99
Publikováno v:
FME Transactions, Vol 47, Iss 4, Pp 887-893 (2019)
Vertical-axis wind turbines (VAWTs) are attractive tools for wind energy extraction particularly suitable for small consumers or off-grid areas. Although their geometry is simple (here, rectangular blade of constant airfoil is assumed), aerodynamic a
Externí odkaz:
https://doaj.org/article/17f068e7471c49bfaf629b1e699d9cb1
Publikováno v:
Scientific Technical Review, Vol 69, Iss 2, Pp 25-31 (2019)
The main roles of unmanned air vehicles (UAVs) include: observation, surveillance, transportation, remote sensing and various security tasks. Improved, augmented type of UAVs are high-altitude long-endurance (HALE) aircraft capable and designed, as t
Externí odkaz:
https://doaj.org/article/296dc0a68fb24186a473e4996d3ee738
Publikováno v:
Theoretical and Applied Mechanics, Vol 45, Iss 1, Pp 53-65 (2018)
Although much employed, wind energy systems still present an open, contemporary topic of many research studies. Special attention is given to precise aerodynamic modeling performed in the beginning since overall wind turbine performances directly
Externí odkaz:
https://doaj.org/article/d8f71de3758d49c7afa79a01d5e0373e
Publikováno v:
FME Transactions, Vol 45, Iss 1, Pp 26-31 (2017)
Darrieus type vertical axis wind turbine (VAWT) is optimized using the genetic algorithm (GA). The airfoil shape is parameterized using the Class-Shape Transformation (CST) method. The double multiple stream tube (DMST) method with the Gormont dynami
Externí odkaz:
https://doaj.org/article/305abf24837849b2b1eb6fd874e57e53
Publikováno v:
Scientific Technical Review, Vol 66, Iss 4, Pp 52-58 (2016)
Numerical investigation of an isolated representative helicopter main rotor has been performed in ANSYS FLUENT 16.2. In general, flow field around the rotor is unsteady, three-dimensional, complex and vortical. Such a simulation requires substantial
Externí odkaz:
https://doaj.org/article/805c4c89993c4a22b15c7bcaaf8951d5
Publikováno v:
FME Transactions, Vol 42, Iss 1, Pp 10-18 (2014)
Increasing velocity combined with reduced mass of modern high speed trains poses the question of influence of strong cross winds on its aerodynamics. Strong cross winds may affect the running stability of high speed trains via the amplified aerodynam
Externí odkaz:
https://doaj.org/article/1f8088edf5914e96b1c36691774ea367
Autor:
Medic-Pericevic, Sonja, Mikov, Ivan, Spanovic, Milorad, Maric, Nada, Zvekic-Svorcan, Jelena, Krasnik, Rastislava
Publikováno v:
Work; 2024, Vol. 79 Issue 3, p999-1005, 7p