Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Florin Frunzulica"'
Publikováno v:
INCAS Bulletin, Vol 10, Iss 2, Pp 199-205 (2018)
The application of the Coandă effect to the directional control of a jet or thrust is presented. Deviation of the thrust force by direct flow can be achieved by using the Coandă effect to change the angle of the primary jet engine exhaust nozzle. M
Externí odkaz:
https://doaj.org/article/1696136d75a54c4c953e519839ca10e5
Publikováno v:
INCAS Bulletin, Vol 9, Iss 1, Pp 85-90 (2017)
The hybrid propulsion offers some remarkable advantages like high safety and high specific impulse and thus it is considered a promising technology for the next generation launchers and space systems. The purpose of this work is to validate a design
Externí odkaz:
https://doaj.org/article/d8ae13db93fe432bb20bdf5618039c4a
Publikováno v:
INCAS Bulletin, Vol 7, Iss 4, Pp 67-76 (2015)
This paper develops a different approach for enhancing the performance of Vertical Axis Wind Turbines for the use in the urban or rural environment and remote isolated residential areas. Recently the vertical axis wind turbines (VAWT) have become mor
Externí odkaz:
https://doaj.org/article/7a19e3c2060f4ab5a3a6225481b0a172
Publikováno v:
INCAS Bulletin, Vol 7, Iss 4, Pp 155-162 (2015)
Impact problems have always been of interest in the Aerospace industry because events such as “bird-strikes” occur quite often and necessary studies must be performed to observe the behavior of structures during the impact. This paper performs a
Externí odkaz:
https://doaj.org/article/b12692862131455d8257d1f30c23619b
Publikováno v:
INCAS Bulletin, Vol 6, Iss 3, Pp 43-55 (2014)
This paper focuses on the behavior of the boundary-layer laminar flow produced by a large radius no-thickness disc which rotates inside an axial stream. Some early solutions are only known for the upstream flow field, but the details of the flow behi
Externí odkaz:
https://doaj.org/article/37c36c0718954a9895b7e6e15c524b8d
Publikováno v:
INCAS Bulletin, Vol 6, Iss 2, Pp 33-49 (2014)
The goal of this paper is to provide a numerical flow analysis based on RANS equations in two directions: the study of augmented high-lift system for a cross-section airfoil of a wing up to transonic regime and the circulation control implemented by
Externí odkaz:
https://doaj.org/article/054aca45885b45a0ab0d5d358c59de88
Publikováno v:
INCAS Bulletin, Vol 6, Iss Special 1, Pp 81-93 (2014)
This paper presents numerical simulations of synthetic jets in aerodynamic applications. We’ve analyzed the formation of isolated synthetic jets, the influence of nozzle geometry and the interaction of synthetic jets with a uniform flow on a flat p
Externí odkaz:
https://doaj.org/article/ff814e5c470a4e55afe7acfc627f583e
Publikováno v:
INCAS Bulletin, Vol 6, Iss Special 1, Pp 67-80 (2014)
In this paper we investigated numerically the dynamic stall phenomenon and the possibilities to control it, with application to vertical axis wind turbines (for urban users). The Phenomenon appear at low tip speed ratio (TSR
Externí odkaz:
https://doaj.org/article/06fd37c720af4054b65be48e15064b5c
Publikováno v:
INCAS Bulletin, Vol 5, Iss 3, Pp 69-75 (2013)
The concept of a three-tier configuration for a vertical axis rotor was successfully developed into a experimental model. The rotor assembly is divided into three tiers with three straight blades in each tier. The three-tiers are shifted by an angle
Externí odkaz:
https://doaj.org/article/ca707b603d484b7a896cbdbdae24f22d
Publikováno v:
INCAS Bulletin, Vol 4, Iss 2, Pp 37-42 (2012)
For a rotating blade the flow passing by a blade section is bended due to the rotation and the local flow field is influenced by the bound circulation on the blade. As a further complication, 3-D effects from tip and root vortices do a precise defini
Externí odkaz:
https://doaj.org/article/dc768ded9b6e4873bc1e5f9021b156ba